Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2 | * fs/f2fs/node.c |
| 3 | * |
| 4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. |
| 5 | * http://www.samsung.com/ |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | #include <linux/fs.h> |
| 12 | #include <linux/f2fs_fs.h> |
| 13 | #include <linux/mpage.h> |
| 14 | #include <linux/backing-dev.h> |
| 15 | #include <linux/blkdev.h> |
| 16 | #include <linux/pagevec.h> |
| 17 | #include <linux/swap.h> |
| 18 | |
| 19 | #include "f2fs.h" |
| 20 | #include "node.h" |
| 21 | #include "segment.h" |
Yunlei He | e21d43c | 2017-07-18 09:48:12 +0800 | [diff] [blame] | 22 | #include "xattr.h" |
Jaegeuk Kim | 9e4ded3 | 2014-12-17 19:58:58 -0800 | [diff] [blame] | 23 | #include "trace.h" |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 24 | #include <trace/events/f2fs.h> |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 25 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 26 | #define on_build_free_nids(nmi) mutex_is_locked(&(nm_i)->build_lock) |
Gu Zheng | f978f5a | 2014-02-21 18:08:29 +0800 | [diff] [blame] | 27 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 28 | static struct kmem_cache *nat_entry_slab; |
| 29 | static struct kmem_cache *free_nid_slab; |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 30 | static struct kmem_cache *nat_entry_set_slab; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 31 | |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 32 | bool available_free_memory(struct f2fs_sb_info *sbi, int type) |
Jaegeuk Kim | cdfc41c | 2014-03-19 13:31:37 +0900 | [diff] [blame] | 33 | { |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 34 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Jaegeuk Kim | cdfc41c | 2014-03-19 13:31:37 +0900 | [diff] [blame] | 35 | struct sysinfo val; |
Jaegeuk Kim | e5e7ea3 | 2014-11-06 15:24:46 -0800 | [diff] [blame] | 36 | unsigned long avail_ram; |
Jaegeuk Kim | cdfc41c | 2014-03-19 13:31:37 +0900 | [diff] [blame] | 37 | unsigned long mem_size = 0; |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 38 | bool res = false; |
Jaegeuk Kim | cdfc41c | 2014-03-19 13:31:37 +0900 | [diff] [blame] | 39 | |
| 40 | si_meminfo(&val); |
Jaegeuk Kim | e5e7ea3 | 2014-11-06 15:24:46 -0800 | [diff] [blame] | 41 | |
| 42 | /* only uses low memory */ |
| 43 | avail_ram = val.totalram - val.totalhigh; |
| 44 | |
Chao Yu | 429511c | 2015-02-05 17:54:31 +0800 | [diff] [blame] | 45 | /* |
| 46 | * give 25%, 25%, 50%, 50%, 50% memory for each components respectively |
| 47 | */ |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 48 | if (type == FREE_NIDS) { |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 49 | mem_size = (nm_i->nid_cnt[FREE_NID] * |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 50 | sizeof(struct free_nid)) >> PAGE_SHIFT; |
Jaegeuk Kim | e5e7ea3 | 2014-11-06 15:24:46 -0800 | [diff] [blame] | 51 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 52 | } else if (type == NAT_ENTRIES) { |
Jaegeuk Kim | e5e7ea3 | 2014-11-06 15:24:46 -0800 | [diff] [blame] | 53 | mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 54 | PAGE_SHIFT; |
Jaegeuk Kim | e5e7ea3 | 2014-11-06 15:24:46 -0800 | [diff] [blame] | 55 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); |
Jaegeuk Kim | e589c2c | 2016-06-02 15:24:24 -0700 | [diff] [blame] | 56 | if (excess_cached_nats(sbi)) |
| 57 | res = false; |
Jaegeuk Kim | a125702 | 2015-10-08 10:40:07 -0700 | [diff] [blame] | 58 | } else if (type == DIRTY_DENTS) { |
| 59 | if (sbi->sb->s_bdi->wb.dirty_exceeded) |
| 60 | return false; |
| 61 | mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); |
| 62 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); |
Jaegeuk Kim | e5e7ea3 | 2014-11-06 15:24:46 -0800 | [diff] [blame] | 63 | } else if (type == INO_ENTRIES) { |
| 64 | int i; |
| 65 | |
Chao Yu | f014be8 | 2017-09-29 13:59:38 +0800 | [diff] [blame] | 66 | for (i = 0; i < MAX_INO_ENTRY; i++) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 67 | mem_size += sbi->im[i].ino_num * |
| 68 | sizeof(struct ino_entry); |
| 69 | mem_size >>= PAGE_SHIFT; |
Jaegeuk Kim | e5e7ea3 | 2014-11-06 15:24:46 -0800 | [diff] [blame] | 70 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); |
Chao Yu | 429511c | 2015-02-05 17:54:31 +0800 | [diff] [blame] | 71 | } else if (type == EXTENT_CACHE) { |
Jaegeuk Kim | 7441cce | 2015-12-21 19:20:15 -0800 | [diff] [blame] | 72 | mem_size = (atomic_read(&sbi->total_ext_tree) * |
| 73 | sizeof(struct extent_tree) + |
Chao Yu | 429511c | 2015-02-05 17:54:31 +0800 | [diff] [blame] | 74 | atomic_read(&sbi->total_ext_node) * |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 75 | sizeof(struct extent_node)) >> PAGE_SHIFT; |
Chao Yu | 429511c | 2015-02-05 17:54:31 +0800 | [diff] [blame] | 76 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); |
Jaegeuk Kim | 35e13ca | 2017-10-18 19:05:57 -0700 | [diff] [blame] | 77 | } else if (type == INMEM_PAGES) { |
| 78 | /* it allows 20% / total_ram for inmemory pages */ |
| 79 | mem_size = get_pages(sbi, F2FS_INMEM_PAGES); |
| 80 | res = mem_size < (val.totalram / 5); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 81 | } else { |
Jaegeuk Kim | 1663cae | 2016-01-09 16:14:08 -0800 | [diff] [blame] | 82 | if (!sbi->sb->s_bdi->wb.dirty_exceeded) |
| 83 | return true; |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 84 | } |
| 85 | return res; |
Jaegeuk Kim | cdfc41c | 2014-03-19 13:31:37 +0900 | [diff] [blame] | 86 | } |
| 87 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 88 | static void clear_node_page_dirty(struct page *page) |
| 89 | { |
| 90 | struct address_space *mapping = page->mapping; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 91 | unsigned int long flags; |
| 92 | |
| 93 | if (PageDirty(page)) { |
| 94 | spin_lock_irqsave(&mapping->tree_lock, flags); |
| 95 | radix_tree_tag_clear(&mapping->page_tree, |
| 96 | page_index(page), |
| 97 | PAGECACHE_TAG_DIRTY); |
| 98 | spin_unlock_irqrestore(&mapping->tree_lock, flags); |
| 99 | |
| 100 | clear_page_dirty_for_io(page); |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 101 | dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 102 | } |
| 103 | ClearPageUptodate(page); |
| 104 | } |
| 105 | |
| 106 | static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) |
| 107 | { |
| 108 | pgoff_t index = current_nat_addr(sbi, nid); |
| 109 | return get_meta_page(sbi, index); |
| 110 | } |
| 111 | |
| 112 | static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) |
| 113 | { |
| 114 | struct page *src_page; |
| 115 | struct page *dst_page; |
| 116 | pgoff_t src_off; |
| 117 | pgoff_t dst_off; |
| 118 | void *src_addr; |
| 119 | void *dst_addr; |
| 120 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 121 | |
| 122 | src_off = current_nat_addr(sbi, nid); |
| 123 | dst_off = next_nat_addr(sbi, src_off); |
| 124 | |
| 125 | /* get current nat block page with lock */ |
| 126 | src_page = get_meta_page(sbi, src_off); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 127 | dst_page = grab_meta_page(sbi, dst_off); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 128 | f2fs_bug_on(sbi, PageDirty(src_page)); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 129 | |
| 130 | src_addr = page_address(src_page); |
| 131 | dst_addr = page_address(dst_page); |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 132 | memcpy(dst_addr, src_addr, PAGE_SIZE); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 133 | set_page_dirty(dst_page); |
| 134 | f2fs_put_page(src_page, 1); |
| 135 | |
| 136 | set_to_next_nat(nm_i, nid); |
| 137 | |
| 138 | return dst_page; |
| 139 | } |
| 140 | |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 141 | static struct nat_entry *__alloc_nat_entry(nid_t nid, bool no_fail) |
| 142 | { |
| 143 | struct nat_entry *new; |
| 144 | |
| 145 | if (no_fail) |
Chao Yu | cfabb6e | 2018-01-25 18:57:25 +0800 | [diff] [blame] | 146 | new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 147 | else |
Chao Yu | cfabb6e | 2018-01-25 18:57:25 +0800 | [diff] [blame] | 148 | new = kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 149 | if (new) { |
| 150 | nat_set_nid(new, nid); |
| 151 | nat_reset_flag(new); |
| 152 | } |
| 153 | return new; |
| 154 | } |
| 155 | |
| 156 | static void __free_nat_entry(struct nat_entry *e) |
| 157 | { |
| 158 | kmem_cache_free(nat_entry_slab, e); |
| 159 | } |
| 160 | |
| 161 | /* must be locked by nat_tree_lock */ |
| 162 | static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, |
| 163 | struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) |
| 164 | { |
| 165 | if (no_fail) |
| 166 | f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); |
| 167 | else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) |
| 168 | return NULL; |
| 169 | |
| 170 | if (raw_ne) |
| 171 | node_info_from_raw_nat(&ne->ni, raw_ne); |
| 172 | list_add_tail(&ne->list, &nm_i->nat_entries); |
| 173 | nm_i->nat_cnt++; |
| 174 | return ne; |
| 175 | } |
| 176 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 177 | static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) |
| 178 | { |
| 179 | return radix_tree_lookup(&nm_i->nat_root, n); |
| 180 | } |
| 181 | |
| 182 | static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, |
| 183 | nid_t start, unsigned int nr, struct nat_entry **ep) |
| 184 | { |
| 185 | return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); |
| 186 | } |
| 187 | |
| 188 | static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) |
| 189 | { |
| 190 | list_del(&e->list); |
| 191 | radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); |
| 192 | nm_i->nat_cnt--; |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 193 | __free_nat_entry(e); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 194 | } |
| 195 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 196 | static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, |
| 197 | struct nat_entry *ne) |
| 198 | { |
| 199 | nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); |
| 200 | struct nat_entry_set *head; |
| 201 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 202 | head = radix_tree_lookup(&nm_i->nat_set_root, set); |
| 203 | if (!head) { |
Jaegeuk Kim | 80c5450 | 2015-08-20 08:51:56 -0700 | [diff] [blame] | 204 | head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 205 | |
| 206 | INIT_LIST_HEAD(&head->entry_list); |
| 207 | INIT_LIST_HEAD(&head->set_list); |
| 208 | head->set = set; |
| 209 | head->entry_cnt = 0; |
Jaegeuk Kim | 9be32d7 | 2014-12-05 10:39:49 -0800 | [diff] [blame] | 210 | f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 211 | } |
Chao Yu | 86aadea | 2017-06-05 18:29:08 +0800 | [diff] [blame] | 212 | |
| 213 | if (get_nat_flag(ne, IS_DIRTY)) |
| 214 | goto refresh_list; |
| 215 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 216 | nm_i->dirty_nat_cnt++; |
| 217 | head->entry_cnt++; |
| 218 | set_nat_flag(ne, IS_DIRTY, true); |
Chao Yu | 86aadea | 2017-06-05 18:29:08 +0800 | [diff] [blame] | 219 | refresh_list: |
| 220 | if (nat_get_blkaddr(ne) == NEW_ADDR) |
| 221 | list_del_init(&ne->list); |
| 222 | else |
| 223 | list_move_tail(&ne->list, &head->entry_list); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 227 | struct nat_entry_set *set, struct nat_entry *ne) |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 228 | { |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 229 | list_move_tail(&ne->list, &nm_i->nat_entries); |
| 230 | set_nat_flag(ne, IS_DIRTY, false); |
| 231 | set->entry_cnt--; |
| 232 | nm_i->dirty_nat_cnt--; |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, |
| 236 | nid_t start, unsigned int nr, struct nat_entry_set **ep) |
| 237 | { |
| 238 | return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, |
| 239 | start, nr); |
| 240 | } |
| 241 | |
Jaegeuk Kim | 2dcf51a | 2015-04-29 18:31:19 -0700 | [diff] [blame] | 242 | int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) |
| 243 | { |
| 244 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 245 | struct nat_entry *e; |
| 246 | bool need = false; |
| 247 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 248 | down_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | 2dcf51a | 2015-04-29 18:31:19 -0700 | [diff] [blame] | 249 | e = __lookup_nat_cache(nm_i, nid); |
| 250 | if (e) { |
| 251 | if (!get_nat_flag(e, IS_CHECKPOINTED) && |
| 252 | !get_nat_flag(e, HAS_FSYNCED_INODE)) |
| 253 | need = true; |
| 254 | } |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 255 | up_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | 2dcf51a | 2015-04-29 18:31:19 -0700 | [diff] [blame] | 256 | return need; |
| 257 | } |
| 258 | |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 259 | bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 260 | { |
| 261 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 262 | struct nat_entry *e; |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 263 | bool is_cp = true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 264 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 265 | down_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 266 | e = __lookup_nat_cache(nm_i, nid); |
Jaegeuk Kim | 7ef35e3 | 2014-09-15 12:07:13 -0700 | [diff] [blame] | 267 | if (e && !get_nat_flag(e, IS_CHECKPOINTED)) |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 268 | is_cp = false; |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 269 | up_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 270 | return is_cp; |
| 271 | } |
| 272 | |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 273 | bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) |
Jaegeuk Kim | b6fe587 | 2014-06-04 00:39:42 +0900 | [diff] [blame] | 274 | { |
| 275 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 276 | struct nat_entry *e; |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 277 | bool need_update = true; |
Jaegeuk Kim | b6fe587 | 2014-06-04 00:39:42 +0900 | [diff] [blame] | 278 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 279 | down_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 280 | e = __lookup_nat_cache(nm_i, ino); |
| 281 | if (e && get_nat_flag(e, HAS_LAST_FSYNC) && |
| 282 | (get_nat_flag(e, IS_CHECKPOINTED) || |
| 283 | get_nat_flag(e, HAS_FSYNCED_INODE))) |
| 284 | need_update = false; |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 285 | up_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 286 | return need_update; |
Jaegeuk Kim | b6fe587 | 2014-06-04 00:39:42 +0900 | [diff] [blame] | 287 | } |
| 288 | |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 289 | /* must be locked by nat_tree_lock */ |
Chao Yu | 1515aef | 2016-02-19 18:12:28 +0800 | [diff] [blame] | 290 | static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 291 | struct f2fs_nat_entry *ne) |
| 292 | { |
Chao Yu | 1515aef | 2016-02-19 18:12:28 +0800 | [diff] [blame] | 293 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 294 | struct nat_entry *new, *e; |
Jaegeuk Kim | 9be32d7 | 2014-12-05 10:39:49 -0800 | [diff] [blame] | 295 | |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 296 | new = __alloc_nat_entry(nid, false); |
| 297 | if (!new) |
| 298 | return; |
| 299 | |
| 300 | down_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 301 | e = __lookup_nat_cache(nm_i, nid); |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 302 | if (!e) |
| 303 | e = __init_nat_entry(nm_i, new, ne, false); |
| 304 | else |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 305 | f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || |
| 306 | nat_get_blkaddr(e) != |
| 307 | le32_to_cpu(ne->block_addr) || |
Chao Yu | 1515aef | 2016-02-19 18:12:28 +0800 | [diff] [blame] | 308 | nat_get_version(e) != ne->version); |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 309 | up_write(&nm_i->nat_tree_lock); |
| 310 | if (e != new) |
| 311 | __free_nat_entry(new); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 312 | } |
| 313 | |
| 314 | static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, |
Jaegeuk Kim | 479f40c | 2014-03-20 21:52:53 +0900 | [diff] [blame] | 315 | block_t new_blkaddr, bool fsync_done) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 316 | { |
| 317 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 318 | struct nat_entry *e; |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 319 | struct nat_entry *new = __alloc_nat_entry(ni->nid, true); |
Jaegeuk Kim | 9be32d7 | 2014-12-05 10:39:49 -0800 | [diff] [blame] | 320 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 321 | down_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 322 | e = __lookup_nat_cache(nm_i, ni->nid); |
| 323 | if (!e) { |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 324 | e = __init_nat_entry(nm_i, new, NULL, true); |
Chao Yu | 5c27f4e | 2014-12-18 17:37:21 +0800 | [diff] [blame] | 325 | copy_node_info(&e->ni, ni); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 326 | f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 327 | } else if (new_blkaddr == NEW_ADDR) { |
| 328 | /* |
| 329 | * when nid is reallocated, |
| 330 | * previous nat entry can be remained in nat cache. |
| 331 | * So, reinitialize it with new information. |
| 332 | */ |
Chao Yu | 5c27f4e | 2014-12-18 17:37:21 +0800 | [diff] [blame] | 333 | copy_node_info(&e->ni, ni); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 334 | f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 335 | } |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 336 | /* let's free early to reduce memory consumption */ |
| 337 | if (e != new) |
| 338 | __free_nat_entry(new); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 339 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 340 | /* sanity check */ |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 341 | f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); |
| 342 | f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 343 | new_blkaddr == NULL_ADDR); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 344 | f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 345 | new_blkaddr == NEW_ADDR); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 346 | f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 347 | nat_get_blkaddr(e) != NULL_ADDR && |
| 348 | new_blkaddr == NEW_ADDR); |
| 349 | |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 350 | /* increment version no as node is removed */ |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 351 | if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { |
| 352 | unsigned char version = nat_get_version(e); |
| 353 | nat_set_version(e, inc_node_version(version)); |
| 354 | } |
| 355 | |
| 356 | /* change address */ |
| 357 | nat_set_blkaddr(e, new_blkaddr); |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 358 | if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) |
| 359 | set_nat_flag(e, IS_CHECKPOINTED, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 360 | __set_nat_cache_dirty(nm_i, e); |
Jaegeuk Kim | 479f40c | 2014-03-20 21:52:53 +0900 | [diff] [blame] | 361 | |
| 362 | /* update fsync_mark if its inode nat entry is still alive */ |
Chao Yu | d5b692b | 2015-04-30 18:35:50 +0800 | [diff] [blame] | 363 | if (ni->nid != ni->ino) |
| 364 | e = __lookup_nat_cache(nm_i, ni->ino); |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 365 | if (e) { |
| 366 | if (fsync_done && ni->nid == ni->ino) |
| 367 | set_nat_flag(e, HAS_FSYNCED_INODE, true); |
| 368 | set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); |
| 369 | } |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 370 | up_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 371 | } |
| 372 | |
Jaegeuk Kim | 4660f9c | 2013-10-24 14:19:18 +0900 | [diff] [blame] | 373 | int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 374 | { |
| 375 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Jaegeuk Kim | 1b38dc8 | 2015-06-19 15:36:07 -0700 | [diff] [blame] | 376 | int nr = nr_shrink; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 377 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 378 | if (!down_write_trylock(&nm_i->nat_tree_lock)) |
| 379 | return 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 380 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 381 | while (nr_shrink && !list_empty(&nm_i->nat_entries)) { |
| 382 | struct nat_entry *ne; |
| 383 | ne = list_first_entry(&nm_i->nat_entries, |
| 384 | struct nat_entry, list); |
| 385 | __del_from_nat_cache(nm_i, ne); |
| 386 | nr_shrink--; |
| 387 | } |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 388 | up_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | 1b38dc8 | 2015-06-19 15:36:07 -0700 | [diff] [blame] | 389 | return nr - nr_shrink; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 390 | } |
| 391 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 392 | /* |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 393 | * This function always returns success |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 394 | */ |
| 395 | void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) |
| 396 | { |
| 397 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 398 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 399 | struct f2fs_journal *journal = curseg->journal; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 400 | nid_t start_nid = START_NID(nid); |
| 401 | struct f2fs_nat_block *nat_blk; |
| 402 | struct page *page = NULL; |
| 403 | struct f2fs_nat_entry ne; |
| 404 | struct nat_entry *e; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 405 | pgoff_t index; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 406 | int i; |
| 407 | |
| 408 | ni->nid = nid; |
| 409 | |
| 410 | /* Check nat cache */ |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 411 | down_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 412 | e = __lookup_nat_cache(nm_i, nid); |
| 413 | if (e) { |
| 414 | ni->ino = nat_get_ino(e); |
| 415 | ni->blk_addr = nat_get_blkaddr(e); |
| 416 | ni->version = nat_get_version(e); |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 417 | up_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 418 | return; |
Chao Yu | 1515aef | 2016-02-19 18:12:28 +0800 | [diff] [blame] | 419 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 420 | |
Jaegeuk Kim | 3547ea9 | 2014-12-30 23:08:26 -0800 | [diff] [blame] | 421 | memset(&ne, 0, sizeof(struct f2fs_nat_entry)); |
| 422 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 423 | /* Check current segment summary */ |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 424 | down_read(&curseg->journal_rwsem); |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 425 | i = lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 426 | if (i >= 0) { |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 427 | ne = nat_in_journal(journal, i); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 428 | node_info_from_raw_nat(ni, &ne); |
| 429 | } |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 430 | up_read(&curseg->journal_rwsem); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 431 | if (i >= 0) { |
| 432 | up_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 433 | goto cache; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 434 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 435 | |
| 436 | /* Fill node_info from nat page */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 437 | index = current_nat_addr(sbi, nid); |
| 438 | up_read(&nm_i->nat_tree_lock); |
| 439 | |
| 440 | page = get_meta_page(sbi, index); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 441 | nat_blk = (struct f2fs_nat_block *)page_address(page); |
| 442 | ne = nat_blk->entries[nid - start_nid]; |
| 443 | node_info_from_raw_nat(ni, &ne); |
| 444 | f2fs_put_page(page, 1); |
| 445 | cache: |
| 446 | /* cache nat entry */ |
Chao Yu | 1515aef | 2016-02-19 18:12:28 +0800 | [diff] [blame] | 447 | cache_nat_entry(sbi, nid, &ne); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 448 | } |
| 449 | |
Jaegeuk Kim | 79344ef | 2016-05-06 16:19:43 -0700 | [diff] [blame] | 450 | /* |
| 451 | * readahead MAX_RA_NODE number of node pages. |
| 452 | */ |
| 453 | static void ra_node_pages(struct page *parent, int start, int n) |
| 454 | { |
| 455 | struct f2fs_sb_info *sbi = F2FS_P_SB(parent); |
| 456 | struct blk_plug plug; |
| 457 | int i, end; |
| 458 | nid_t nid; |
| 459 | |
| 460 | blk_start_plug(&plug); |
| 461 | |
| 462 | /* Then, try readahead for siblings of the desired node */ |
| 463 | end = start + n; |
| 464 | end = min(end, NIDS_PER_BLOCK); |
| 465 | for (i = start; i < end; i++) { |
| 466 | nid = get_nid(parent, i, false); |
| 467 | ra_node_page(sbi, nid); |
| 468 | } |
| 469 | |
| 470 | blk_finish_plug(&plug); |
| 471 | } |
| 472 | |
Chao Yu | 3cf4574 | 2016-01-26 15:40:44 +0800 | [diff] [blame] | 473 | pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) |
| 474 | { |
| 475 | const long direct_index = ADDRS_PER_INODE(dn->inode); |
| 476 | const long direct_blks = ADDRS_PER_BLOCK; |
| 477 | const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; |
| 478 | unsigned int skipped_unit = ADDRS_PER_BLOCK; |
| 479 | int cur_level = dn->cur_level; |
| 480 | int max_level = dn->max_level; |
| 481 | pgoff_t base = 0; |
| 482 | |
| 483 | if (!dn->max_level) |
| 484 | return pgofs + 1; |
| 485 | |
| 486 | while (max_level-- > cur_level) |
| 487 | skipped_unit *= NIDS_PER_BLOCK; |
| 488 | |
| 489 | switch (dn->max_level) { |
| 490 | case 3: |
| 491 | base += 2 * indirect_blks; |
| 492 | case 2: |
| 493 | base += 2 * direct_blks; |
| 494 | case 1: |
| 495 | base += direct_index; |
| 496 | break; |
| 497 | default: |
| 498 | f2fs_bug_on(F2FS_I_SB(dn->inode), 1); |
| 499 | } |
| 500 | |
| 501 | return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; |
| 502 | } |
| 503 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 504 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 505 | * The maximum depth is four. |
| 506 | * Offset[0] will have raw inode offset. |
| 507 | */ |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 508 | static int get_node_path(struct inode *inode, long block, |
Jaegeuk Kim | de93653 | 2013-08-12 21:08:03 +0900 | [diff] [blame] | 509 | int offset[4], unsigned int noffset[4]) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 510 | { |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 511 | const long direct_index = ADDRS_PER_INODE(inode); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 512 | const long direct_blks = ADDRS_PER_BLOCK; |
| 513 | const long dptrs_per_blk = NIDS_PER_BLOCK; |
| 514 | const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; |
| 515 | const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; |
| 516 | int n = 0; |
| 517 | int level = 0; |
| 518 | |
| 519 | noffset[0] = 0; |
| 520 | |
| 521 | if (block < direct_index) { |
Namjae Jeon | 25c0a6e | 2013-03-02 12:41:31 +0900 | [diff] [blame] | 522 | offset[n] = block; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 523 | goto got; |
| 524 | } |
| 525 | block -= direct_index; |
| 526 | if (block < direct_blks) { |
| 527 | offset[n++] = NODE_DIR1_BLOCK; |
| 528 | noffset[n] = 1; |
Namjae Jeon | 25c0a6e | 2013-03-02 12:41:31 +0900 | [diff] [blame] | 529 | offset[n] = block; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 530 | level = 1; |
| 531 | goto got; |
| 532 | } |
| 533 | block -= direct_blks; |
| 534 | if (block < direct_blks) { |
| 535 | offset[n++] = NODE_DIR2_BLOCK; |
| 536 | noffset[n] = 2; |
Namjae Jeon | 25c0a6e | 2013-03-02 12:41:31 +0900 | [diff] [blame] | 537 | offset[n] = block; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 538 | level = 1; |
| 539 | goto got; |
| 540 | } |
| 541 | block -= direct_blks; |
| 542 | if (block < indirect_blks) { |
| 543 | offset[n++] = NODE_IND1_BLOCK; |
| 544 | noffset[n] = 3; |
| 545 | offset[n++] = block / direct_blks; |
| 546 | noffset[n] = 4 + offset[n - 1]; |
Namjae Jeon | 25c0a6e | 2013-03-02 12:41:31 +0900 | [diff] [blame] | 547 | offset[n] = block % direct_blks; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 548 | level = 2; |
| 549 | goto got; |
| 550 | } |
| 551 | block -= indirect_blks; |
| 552 | if (block < indirect_blks) { |
| 553 | offset[n++] = NODE_IND2_BLOCK; |
| 554 | noffset[n] = 4 + dptrs_per_blk; |
| 555 | offset[n++] = block / direct_blks; |
| 556 | noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; |
Namjae Jeon | 25c0a6e | 2013-03-02 12:41:31 +0900 | [diff] [blame] | 557 | offset[n] = block % direct_blks; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 558 | level = 2; |
| 559 | goto got; |
| 560 | } |
| 561 | block -= indirect_blks; |
| 562 | if (block < dindirect_blks) { |
| 563 | offset[n++] = NODE_DIND_BLOCK; |
| 564 | noffset[n] = 5 + (dptrs_per_blk * 2); |
| 565 | offset[n++] = block / indirect_blks; |
| 566 | noffset[n] = 6 + (dptrs_per_blk * 2) + |
| 567 | offset[n - 1] * (dptrs_per_blk + 1); |
| 568 | offset[n++] = (block / direct_blks) % dptrs_per_blk; |
| 569 | noffset[n] = 7 + (dptrs_per_blk * 2) + |
| 570 | offset[n - 2] * (dptrs_per_blk + 1) + |
| 571 | offset[n - 1]; |
Namjae Jeon | 25c0a6e | 2013-03-02 12:41:31 +0900 | [diff] [blame] | 572 | offset[n] = block % direct_blks; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 573 | level = 3; |
| 574 | goto got; |
| 575 | } else { |
Jaegeuk Kim | d6f5d63 | 2017-08-21 13:51:32 -0700 | [diff] [blame] | 576 | return -E2BIG; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 577 | } |
| 578 | got: |
| 579 | return level; |
| 580 | } |
| 581 | |
| 582 | /* |
| 583 | * Caller should call f2fs_put_dnode(dn). |
Chao Yu | 4f4124d | 2013-12-21 18:02:14 +0800 | [diff] [blame] | 584 | * Also, it should grab and release a rwsem by calling f2fs_lock_op() and |
| 585 | * f2fs_unlock_op() only if ro is not set RDONLY_NODE. |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 586 | * In the case of RDONLY_NODE, we don't need to care about mutex. |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 587 | */ |
Jaegeuk Kim | 266e97a | 2013-02-26 13:10:46 +0900 | [diff] [blame] | 588 | int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 589 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 590 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 591 | struct page *npage[4]; |
Jaegeuk Kim | f1a3b98 | 2015-02-11 11:25:11 -0800 | [diff] [blame] | 592 | struct page *parent = NULL; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 593 | int offset[4]; |
| 594 | unsigned int noffset[4]; |
| 595 | nid_t nids[4]; |
Chao Yu | 3cf4574 | 2016-01-26 15:40:44 +0800 | [diff] [blame] | 596 | int level, i = 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 597 | int err = 0; |
| 598 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 599 | level = get_node_path(dn->inode, index, offset, noffset); |
Jaegeuk Kim | d6f5d63 | 2017-08-21 13:51:32 -0700 | [diff] [blame] | 600 | if (level < 0) |
| 601 | return level; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 602 | |
| 603 | nids[0] = dn->inode->i_ino; |
Jaegeuk Kim | 1646cfa | 2013-05-20 09:42:28 +0900 | [diff] [blame] | 604 | npage[0] = dn->inode_page; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 605 | |
Jaegeuk Kim | 1646cfa | 2013-05-20 09:42:28 +0900 | [diff] [blame] | 606 | if (!npage[0]) { |
| 607 | npage[0] = get_node_page(sbi, nids[0]); |
| 608 | if (IS_ERR(npage[0])) |
| 609 | return PTR_ERR(npage[0]); |
| 610 | } |
Jaegeuk Kim | f1a3b98 | 2015-02-11 11:25:11 -0800 | [diff] [blame] | 611 | |
| 612 | /* if inline_data is set, should not report any block indices */ |
| 613 | if (f2fs_has_inline_data(dn->inode) && index) { |
Jaegeuk Kim | 7662916 | 2015-03-02 16:28:16 -0800 | [diff] [blame] | 614 | err = -ENOENT; |
Jaegeuk Kim | f1a3b98 | 2015-02-11 11:25:11 -0800 | [diff] [blame] | 615 | f2fs_put_page(npage[0], 1); |
| 616 | goto release_out; |
| 617 | } |
| 618 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 619 | parent = npage[0]; |
Changman Lee | 52c2db3 | 2013-02-20 07:47:06 +0900 | [diff] [blame] | 620 | if (level != 0) |
| 621 | nids[1] = get_nid(parent, offset[0], true); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 622 | dn->inode_page = npage[0]; |
| 623 | dn->inode_page_locked = true; |
| 624 | |
| 625 | /* get indirect or direct nodes */ |
| 626 | for (i = 1; i <= level; i++) { |
| 627 | bool done = false; |
| 628 | |
Jaegeuk Kim | 266e97a | 2013-02-26 13:10:46 +0900 | [diff] [blame] | 629 | if (!nids[i] && mode == ALLOC_NODE) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 630 | /* alloc new node */ |
| 631 | if (!alloc_nid(sbi, &(nids[i]))) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 632 | err = -ENOSPC; |
| 633 | goto release_pages; |
| 634 | } |
| 635 | |
| 636 | dn->nid = nids[i]; |
Yunlei He | 40df136 | 2017-07-17 19:16:11 +0800 | [diff] [blame] | 637 | npage[i] = new_node_page(dn, noffset[i]); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 638 | if (IS_ERR(npage[i])) { |
| 639 | alloc_nid_failed(sbi, nids[i]); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 640 | err = PTR_ERR(npage[i]); |
| 641 | goto release_pages; |
| 642 | } |
| 643 | |
| 644 | set_nid(parent, offset[i - 1], nids[i], i == 1); |
| 645 | alloc_nid_done(sbi, nids[i]); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 646 | done = true; |
Jaegeuk Kim | 266e97a | 2013-02-26 13:10:46 +0900 | [diff] [blame] | 647 | } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 648 | npage[i] = get_node_page_ra(parent, offset[i - 1]); |
| 649 | if (IS_ERR(npage[i])) { |
| 650 | err = PTR_ERR(npage[i]); |
| 651 | goto release_pages; |
| 652 | } |
| 653 | done = true; |
| 654 | } |
| 655 | if (i == 1) { |
| 656 | dn->inode_page_locked = false; |
| 657 | unlock_page(parent); |
| 658 | } else { |
| 659 | f2fs_put_page(parent, 1); |
| 660 | } |
| 661 | |
| 662 | if (!done) { |
| 663 | npage[i] = get_node_page(sbi, nids[i]); |
| 664 | if (IS_ERR(npage[i])) { |
| 665 | err = PTR_ERR(npage[i]); |
| 666 | f2fs_put_page(npage[0], 0); |
| 667 | goto release_out; |
| 668 | } |
| 669 | } |
| 670 | if (i < level) { |
| 671 | parent = npage[i]; |
| 672 | nids[i + 1] = get_nid(parent, offset[i], false); |
| 673 | } |
| 674 | } |
| 675 | dn->nid = nids[level]; |
| 676 | dn->ofs_in_node = offset[level]; |
| 677 | dn->node_page = npage[level]; |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame] | 678 | dn->data_blkaddr = datablock_addr(dn->inode, |
| 679 | dn->node_page, dn->ofs_in_node); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 680 | return 0; |
| 681 | |
| 682 | release_pages: |
| 683 | f2fs_put_page(parent, 1); |
| 684 | if (i > 1) |
| 685 | f2fs_put_page(npage[0], 0); |
| 686 | release_out: |
| 687 | dn->inode_page = NULL; |
| 688 | dn->node_page = NULL; |
Chao Yu | 3cf4574 | 2016-01-26 15:40:44 +0800 | [diff] [blame] | 689 | if (err == -ENOENT) { |
| 690 | dn->cur_level = i; |
| 691 | dn->max_level = level; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 692 | dn->ofs_in_node = offset[level]; |
Chao Yu | 3cf4574 | 2016-01-26 15:40:44 +0800 | [diff] [blame] | 693 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 694 | return err; |
| 695 | } |
| 696 | |
| 697 | static void truncate_node(struct dnode_of_data *dn) |
| 698 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 699 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 700 | struct node_info ni; |
| 701 | |
| 702 | get_node_info(sbi, dn->nid, &ni); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 703 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 704 | /* Deallocate node address */ |
Jaegeuk Kim | 71e9fec | 2012-12-20 15:10:06 +0900 | [diff] [blame] | 705 | invalidate_blocks(sbi, ni.blk_addr); |
Chao Yu | d9bfbbb | 2017-07-06 01:11:31 +0800 | [diff] [blame] | 706 | dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); |
Jaegeuk Kim | 479f40c | 2014-03-20 21:52:53 +0900 | [diff] [blame] | 707 | set_node_addr(sbi, &ni, NULL_ADDR, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 708 | |
| 709 | if (dn->nid == dn->inode->i_ino) { |
| 710 | remove_orphan_inode(sbi, dn->nid); |
| 711 | dec_valid_inode_count(sbi); |
Jaegeuk Kim | 0f18b46 | 2016-05-20 11:10:10 -0700 | [diff] [blame] | 712 | f2fs_inode_synced(dn->inode); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 713 | } |
Chao Yu | d9bfbbb | 2017-07-06 01:11:31 +0800 | [diff] [blame] | 714 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 715 | clear_node_page_dirty(dn->node_page); |
Chao Yu | caf0047 | 2015-01-28 17:48:42 +0800 | [diff] [blame] | 716 | set_sbi_flag(sbi, SBI_IS_DIRTY); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 717 | |
| 718 | f2fs_put_page(dn->node_page, 1); |
Jaegeuk Kim | bf39c00 | 2014-01-22 20:41:57 +0900 | [diff] [blame] | 719 | |
| 720 | invalidate_mapping_pages(NODE_MAPPING(sbi), |
| 721 | dn->node_page->index, dn->node_page->index); |
| 722 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 723 | dn->node_page = NULL; |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 724 | trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 725 | } |
| 726 | |
| 727 | static int truncate_dnode(struct dnode_of_data *dn) |
| 728 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 729 | struct page *page; |
| 730 | |
| 731 | if (dn->nid == 0) |
| 732 | return 1; |
| 733 | |
| 734 | /* get direct node */ |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 735 | page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 736 | if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) |
| 737 | return 1; |
| 738 | else if (IS_ERR(page)) |
| 739 | return PTR_ERR(page); |
| 740 | |
| 741 | /* Make dnode_of_data for parameter */ |
| 742 | dn->node_page = page; |
| 743 | dn->ofs_in_node = 0; |
| 744 | truncate_data_blocks(dn); |
| 745 | truncate_node(dn); |
| 746 | return 1; |
| 747 | } |
| 748 | |
| 749 | static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, |
| 750 | int ofs, int depth) |
| 751 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 752 | struct dnode_of_data rdn = *dn; |
| 753 | struct page *page; |
| 754 | struct f2fs_node *rn; |
| 755 | nid_t child_nid; |
| 756 | unsigned int child_nofs; |
| 757 | int freed = 0; |
| 758 | int i, ret; |
| 759 | |
| 760 | if (dn->nid == 0) |
| 761 | return NIDS_PER_BLOCK + 1; |
| 762 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 763 | trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); |
| 764 | |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 765 | page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 766 | if (IS_ERR(page)) { |
| 767 | trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 768 | return PTR_ERR(page); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 769 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 770 | |
Jaegeuk Kim | 79344ef | 2016-05-06 16:19:43 -0700 | [diff] [blame] | 771 | ra_node_pages(page, ofs, NIDS_PER_BLOCK); |
| 772 | |
Gu Zheng | 4559071 | 2013-07-15 17:57:38 +0800 | [diff] [blame] | 773 | rn = F2FS_NODE(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 774 | if (depth < 3) { |
| 775 | for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { |
| 776 | child_nid = le32_to_cpu(rn->in.nid[i]); |
| 777 | if (child_nid == 0) |
| 778 | continue; |
| 779 | rdn.nid = child_nid; |
| 780 | ret = truncate_dnode(&rdn); |
| 781 | if (ret < 0) |
| 782 | goto out_err; |
Jaegeuk Kim | 12719ae | 2016-01-07 13:23:12 -0800 | [diff] [blame] | 783 | if (set_nid(page, i, 0, false)) |
| 784 | dn->node_changed = true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 785 | } |
| 786 | } else { |
| 787 | child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; |
| 788 | for (i = ofs; i < NIDS_PER_BLOCK; i++) { |
| 789 | child_nid = le32_to_cpu(rn->in.nid[i]); |
| 790 | if (child_nid == 0) { |
| 791 | child_nofs += NIDS_PER_BLOCK + 1; |
| 792 | continue; |
| 793 | } |
| 794 | rdn.nid = child_nid; |
| 795 | ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); |
| 796 | if (ret == (NIDS_PER_BLOCK + 1)) { |
Jaegeuk Kim | 12719ae | 2016-01-07 13:23:12 -0800 | [diff] [blame] | 797 | if (set_nid(page, i, 0, false)) |
| 798 | dn->node_changed = true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 799 | child_nofs += ret; |
| 800 | } else if (ret < 0 && ret != -ENOENT) { |
| 801 | goto out_err; |
| 802 | } |
| 803 | } |
| 804 | freed = child_nofs; |
| 805 | } |
| 806 | |
| 807 | if (!ofs) { |
| 808 | /* remove current indirect node */ |
| 809 | dn->node_page = page; |
| 810 | truncate_node(dn); |
| 811 | freed++; |
| 812 | } else { |
| 813 | f2fs_put_page(page, 1); |
| 814 | } |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 815 | trace_f2fs_truncate_nodes_exit(dn->inode, freed); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 816 | return freed; |
| 817 | |
| 818 | out_err: |
| 819 | f2fs_put_page(page, 1); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 820 | trace_f2fs_truncate_nodes_exit(dn->inode, ret); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 821 | return ret; |
| 822 | } |
| 823 | |
| 824 | static int truncate_partial_nodes(struct dnode_of_data *dn, |
| 825 | struct f2fs_inode *ri, int *offset, int depth) |
| 826 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 827 | struct page *pages[2]; |
| 828 | nid_t nid[3]; |
| 829 | nid_t child_nid; |
| 830 | int err = 0; |
| 831 | int i; |
| 832 | int idx = depth - 2; |
| 833 | |
| 834 | nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); |
| 835 | if (!nid[0]) |
| 836 | return 0; |
| 837 | |
| 838 | /* get indirect nodes in the path */ |
shifei10.ge | a225dca | 2013-10-29 15:32:34 +0800 | [diff] [blame] | 839 | for (i = 0; i < idx + 1; i++) { |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 840 | /* reference count'll be increased */ |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 841 | pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 842 | if (IS_ERR(pages[i])) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 843 | err = PTR_ERR(pages[i]); |
shifei10.ge | a225dca | 2013-10-29 15:32:34 +0800 | [diff] [blame] | 844 | idx = i - 1; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 845 | goto fail; |
| 846 | } |
| 847 | nid[i + 1] = get_nid(pages[i], offset[i + 1], false); |
| 848 | } |
| 849 | |
Jaegeuk Kim | 79344ef | 2016-05-06 16:19:43 -0700 | [diff] [blame] | 850 | ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); |
| 851 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 852 | /* free direct nodes linked to a partial indirect node */ |
shifei10.ge | a225dca | 2013-10-29 15:32:34 +0800 | [diff] [blame] | 853 | for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 854 | child_nid = get_nid(pages[idx], i, false); |
| 855 | if (!child_nid) |
| 856 | continue; |
| 857 | dn->nid = child_nid; |
| 858 | err = truncate_dnode(dn); |
| 859 | if (err < 0) |
| 860 | goto fail; |
Jaegeuk Kim | 12719ae | 2016-01-07 13:23:12 -0800 | [diff] [blame] | 861 | if (set_nid(pages[idx], i, 0, false)) |
| 862 | dn->node_changed = true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 863 | } |
| 864 | |
shifei10.ge | a225dca | 2013-10-29 15:32:34 +0800 | [diff] [blame] | 865 | if (offset[idx + 1] == 0) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 866 | dn->node_page = pages[idx]; |
| 867 | dn->nid = nid[idx]; |
| 868 | truncate_node(dn); |
| 869 | } else { |
| 870 | f2fs_put_page(pages[idx], 1); |
| 871 | } |
| 872 | offset[idx]++; |
shifei10.ge | a225dca | 2013-10-29 15:32:34 +0800 | [diff] [blame] | 873 | offset[idx + 1] = 0; |
| 874 | idx--; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 875 | fail: |
shifei10.ge | a225dca | 2013-10-29 15:32:34 +0800 | [diff] [blame] | 876 | for (i = idx; i >= 0; i--) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 877 | f2fs_put_page(pages[i], 1); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 878 | |
| 879 | trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); |
| 880 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 881 | return err; |
| 882 | } |
| 883 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 884 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 885 | * All the block addresses of data and nodes should be nullified. |
| 886 | */ |
| 887 | int truncate_inode_blocks(struct inode *inode, pgoff_t from) |
| 888 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 889 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 890 | int err = 0, cont = 1; |
| 891 | int level, offset[4], noffset[4]; |
Jaegeuk Kim | 7dd690c | 2013-02-12 07:28:55 +0900 | [diff] [blame] | 892 | unsigned int nofs = 0; |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 893 | struct f2fs_inode *ri; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 894 | struct dnode_of_data dn; |
| 895 | struct page *page; |
| 896 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 897 | trace_f2fs_truncate_inode_blocks_enter(inode, from); |
| 898 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 899 | level = get_node_path(inode, from, offset, noffset); |
Jaegeuk Kim | d6f5d63 | 2017-08-21 13:51:32 -0700 | [diff] [blame] | 900 | if (level < 0) |
| 901 | return level; |
Jaegeuk Kim | ff37355 | 2016-03-29 16:13:45 -0700 | [diff] [blame] | 902 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 903 | page = get_node_page(sbi, inode->i_ino); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 904 | if (IS_ERR(page)) { |
| 905 | trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 906 | return PTR_ERR(page); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 907 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 908 | |
| 909 | set_new_dnode(&dn, inode, page, NULL, 0); |
| 910 | unlock_page(page); |
| 911 | |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 912 | ri = F2FS_INODE(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 913 | switch (level) { |
| 914 | case 0: |
| 915 | case 1: |
| 916 | nofs = noffset[1]; |
| 917 | break; |
| 918 | case 2: |
| 919 | nofs = noffset[1]; |
| 920 | if (!offset[level - 1]) |
| 921 | goto skip_partial; |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 922 | err = truncate_partial_nodes(&dn, ri, offset, level); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 923 | if (err < 0 && err != -ENOENT) |
| 924 | goto fail; |
| 925 | nofs += 1 + NIDS_PER_BLOCK; |
| 926 | break; |
| 927 | case 3: |
| 928 | nofs = 5 + 2 * NIDS_PER_BLOCK; |
| 929 | if (!offset[level - 1]) |
| 930 | goto skip_partial; |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 931 | err = truncate_partial_nodes(&dn, ri, offset, level); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 932 | if (err < 0 && err != -ENOENT) |
| 933 | goto fail; |
| 934 | break; |
| 935 | default: |
| 936 | BUG(); |
| 937 | } |
| 938 | |
| 939 | skip_partial: |
| 940 | while (cont) { |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 941 | dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 942 | switch (offset[0]) { |
| 943 | case NODE_DIR1_BLOCK: |
| 944 | case NODE_DIR2_BLOCK: |
| 945 | err = truncate_dnode(&dn); |
| 946 | break; |
| 947 | |
| 948 | case NODE_IND1_BLOCK: |
| 949 | case NODE_IND2_BLOCK: |
| 950 | err = truncate_nodes(&dn, nofs, offset[1], 2); |
| 951 | break; |
| 952 | |
| 953 | case NODE_DIND_BLOCK: |
| 954 | err = truncate_nodes(&dn, nofs, offset[1], 3); |
| 955 | cont = 0; |
| 956 | break; |
| 957 | |
| 958 | default: |
| 959 | BUG(); |
| 960 | } |
| 961 | if (err < 0 && err != -ENOENT) |
| 962 | goto fail; |
| 963 | if (offset[1] == 0 && |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 964 | ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 965 | lock_page(page); |
Jaegeuk Kim | ff37355 | 2016-03-29 16:13:45 -0700 | [diff] [blame] | 966 | BUG_ON(page->mapping != NODE_MAPPING(sbi)); |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 967 | f2fs_wait_on_page_writeback(page, NODE, true); |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 968 | ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 969 | set_page_dirty(page); |
| 970 | unlock_page(page); |
| 971 | } |
| 972 | offset[1] = 0; |
| 973 | offset[0]++; |
| 974 | nofs += err; |
| 975 | } |
| 976 | fail: |
| 977 | f2fs_put_page(page, 0); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 978 | trace_f2fs_truncate_inode_blocks_exit(inode, err); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 979 | return err > 0 ? 0 : err; |
| 980 | } |
| 981 | |
Jaegeuk Kim | 41d5923 | 2017-10-19 11:48:57 -0700 | [diff] [blame] | 982 | /* caller must lock inode page */ |
| 983 | int truncate_xattr_node(struct inode *inode) |
Jaegeuk Kim | 4f16fb0 | 2013-08-14 20:40:06 +0900 | [diff] [blame] | 984 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 985 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 4f16fb0 | 2013-08-14 20:40:06 +0900 | [diff] [blame] | 986 | nid_t nid = F2FS_I(inode)->i_xattr_nid; |
| 987 | struct dnode_of_data dn; |
| 988 | struct page *npage; |
| 989 | |
| 990 | if (!nid) |
| 991 | return 0; |
| 992 | |
| 993 | npage = get_node_page(sbi, nid); |
| 994 | if (IS_ERR(npage)) |
| 995 | return PTR_ERR(npage); |
| 996 | |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 997 | f2fs_i_xnid_write(inode, 0); |
Jaegeuk Kim | 65985d9 | 2013-08-14 21:57:27 +0900 | [diff] [blame] | 998 | |
Jaegeuk Kim | 41d5923 | 2017-10-19 11:48:57 -0700 | [diff] [blame] | 999 | set_new_dnode(&dn, inode, NULL, npage, nid); |
Jaegeuk Kim | 4f16fb0 | 2013-08-14 20:40:06 +0900 | [diff] [blame] | 1000 | truncate_node(&dn); |
| 1001 | return 0; |
| 1002 | } |
| 1003 | |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 1004 | /* |
Chao Yu | 4f4124d | 2013-12-21 18:02:14 +0800 | [diff] [blame] | 1005 | * Caller should grab and release a rwsem by calling f2fs_lock_op() and |
| 1006 | * f2fs_unlock_op(). |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 1007 | */ |
Chao Yu | 13ec729 | 2015-08-24 17:40:45 +0800 | [diff] [blame] | 1008 | int remove_inode_page(struct inode *inode) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1009 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1010 | struct dnode_of_data dn; |
Chao Yu | 13ec729 | 2015-08-24 17:40:45 +0800 | [diff] [blame] | 1011 | int err; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1012 | |
Jaegeuk Kim | c2e6958 | 2014-08-25 14:45:59 -0700 | [diff] [blame] | 1013 | set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); |
Chao Yu | 13ec729 | 2015-08-24 17:40:45 +0800 | [diff] [blame] | 1014 | err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); |
| 1015 | if (err) |
| 1016 | return err; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1017 | |
Jaegeuk Kim | 41d5923 | 2017-10-19 11:48:57 -0700 | [diff] [blame] | 1018 | err = truncate_xattr_node(inode); |
Chao Yu | 13ec729 | 2015-08-24 17:40:45 +0800 | [diff] [blame] | 1019 | if (err) { |
Jaegeuk Kim | c2e6958 | 2014-08-25 14:45:59 -0700 | [diff] [blame] | 1020 | f2fs_put_dnode(&dn); |
Chao Yu | 13ec729 | 2015-08-24 17:40:45 +0800 | [diff] [blame] | 1021 | return err; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1022 | } |
Jaegeuk Kim | c2e6958 | 2014-08-25 14:45:59 -0700 | [diff] [blame] | 1023 | |
| 1024 | /* remove potential inline_data blocks */ |
| 1025 | if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
| 1026 | S_ISLNK(inode->i_mode)) |
| 1027 | truncate_data_blocks_range(&dn, 1); |
| 1028 | |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 1029 | /* 0 is possible, after f2fs_new_inode() has failed */ |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 1030 | f2fs_bug_on(F2FS_I_SB(inode), |
Chao Yu | 56a0d93 | 2017-06-14 23:00:56 +0800 | [diff] [blame] | 1031 | inode->i_blocks != 0 && inode->i_blocks != 8); |
Jaegeuk Kim | c2e6958 | 2014-08-25 14:45:59 -0700 | [diff] [blame] | 1032 | |
| 1033 | /* will put inode & node pages */ |
Jaegeuk Kim | 71e9fec | 2012-12-20 15:10:06 +0900 | [diff] [blame] | 1034 | truncate_node(&dn); |
Chao Yu | 13ec729 | 2015-08-24 17:40:45 +0800 | [diff] [blame] | 1035 | return 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1036 | } |
| 1037 | |
Jaegeuk Kim | a014e03 | 2014-06-20 21:44:02 -0700 | [diff] [blame] | 1038 | struct page *new_inode_page(struct inode *inode) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1039 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1040 | struct dnode_of_data dn; |
| 1041 | |
| 1042 | /* allocate inode page for new inode */ |
| 1043 | set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); |
Jaegeuk Kim | 44a83ff | 2013-05-20 10:10:29 +0900 | [diff] [blame] | 1044 | |
| 1045 | /* caller should f2fs_put_page(page, 1); */ |
Yunlei He | 40df136 | 2017-07-17 19:16:11 +0800 | [diff] [blame] | 1046 | return new_node_page(&dn, 0); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1047 | } |
| 1048 | |
Yunlei He | 40df136 | 2017-07-17 19:16:11 +0800 | [diff] [blame] | 1049 | struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1050 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1051 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1052 | struct node_info new_ni; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1053 | struct page *page; |
| 1054 | int err; |
| 1055 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1056 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1057 | return ERR_PTR(-EPERM); |
| 1058 | |
Jaegeuk Kim | 300e129 | 2016-04-29 16:11:53 -0700 | [diff] [blame] | 1059 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1060 | if (!page) |
| 1061 | return ERR_PTR(-ENOMEM); |
| 1062 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1063 | if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) |
Jaegeuk Kim | 9c02740 | 2013-08-12 16:00:46 +0900 | [diff] [blame] | 1064 | goto fail; |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1065 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1066 | #ifdef CONFIG_F2FS_CHECK_FS |
| 1067 | get_node_info(sbi, dn->nid, &new_ni); |
| 1068 | f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); |
| 1069 | #endif |
| 1070 | new_ni.nid = dn->nid; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1071 | new_ni.ino = dn->inode->i_ino; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1072 | new_ni.blk_addr = NULL_ADDR; |
| 1073 | new_ni.flag = 0; |
| 1074 | new_ni.version = 0; |
Jaegeuk Kim | 479f40c | 2014-03-20 21:52:53 +0900 | [diff] [blame] | 1075 | set_node_addr(sbi, &new_ni, NEW_ADDR, false); |
Jaegeuk Kim | 9c02740 | 2013-08-12 16:00:46 +0900 | [diff] [blame] | 1076 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 1077 | f2fs_wait_on_page_writeback(page, NODE, true); |
Jaegeuk Kim | 9c02740 | 2013-08-12 16:00:46 +0900 | [diff] [blame] | 1078 | fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); |
Chao Yu | c7930ee8 | 2018-03-09 14:24:22 +0800 | [diff] [blame] | 1079 | set_cold_node(page, S_ISDIR(dn->inode->i_mode)); |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 1080 | if (!PageUptodate(page)) |
| 1081 | SetPageUptodate(page); |
Jaegeuk Kim | 12719ae | 2016-01-07 13:23:12 -0800 | [diff] [blame] | 1082 | if (set_page_dirty(page)) |
| 1083 | dn->node_changed = true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1084 | |
Chao Yu | 4bc8e9b | 2014-03-17 16:35:06 +0800 | [diff] [blame] | 1085 | if (f2fs_has_xattr_block(ofs)) |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 1086 | f2fs_i_xnid_write(dn->inode, dn->nid); |
Jaegeuk Kim | 479bd73 | 2013-08-12 16:04:53 +0900 | [diff] [blame] | 1087 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1088 | if (ofs == 0) |
| 1089 | inc_valid_inode_count(sbi); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1090 | return page; |
| 1091 | |
| 1092 | fail: |
Jaegeuk Kim | 71e9fec | 2012-12-20 15:10:06 +0900 | [diff] [blame] | 1093 | clear_node_page_dirty(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1094 | f2fs_put_page(page, 1); |
| 1095 | return ERR_PTR(err); |
| 1096 | } |
| 1097 | |
Jaegeuk Kim | 56ae674 | 2013-03-31 12:47:20 +0900 | [diff] [blame] | 1098 | /* |
| 1099 | * Caller should do after getting the following values. |
| 1100 | * 0: f2fs_put_page(page, 0) |
Jaegeuk Kim | 86531d6 | 2015-07-15 13:08:21 -0700 | [diff] [blame] | 1101 | * LOCKED_PAGE or error: f2fs_put_page(page, 1) |
Jaegeuk Kim | 56ae674 | 2013-03-31 12:47:20 +0900 | [diff] [blame] | 1102 | */ |
Mike Christie | 04d328d | 2016-06-05 14:31:55 -0500 | [diff] [blame] | 1103 | static int read_node_page(struct page *page, int op_flags) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1104 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1105 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1106 | struct node_info ni; |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 1107 | struct f2fs_io_info fio = { |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1108 | .sbi = sbi, |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 1109 | .type = NODE, |
Mike Christie | 04d328d | 2016-06-05 14:31:55 -0500 | [diff] [blame] | 1110 | .op = REQ_OP_READ, |
| 1111 | .op_flags = op_flags, |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1112 | .page = page, |
Jaegeuk Kim | 4375a33 | 2015-04-23 12:04:33 -0700 | [diff] [blame] | 1113 | .encrypted_page = NULL, |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 1114 | }; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1115 | |
Jaegeuk Kim | 3bdad3c | 2016-06-30 19:04:16 -0700 | [diff] [blame] | 1116 | if (PageUptodate(page)) |
| 1117 | return LOCKED_PAGE; |
| 1118 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1119 | get_node_info(sbi, page->index, &ni); |
| 1120 | |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 1121 | if (unlikely(ni.blk_addr == NULL_ADDR)) { |
Jaegeuk Kim | 2bca1e2 | 2015-02-25 19:25:01 -0800 | [diff] [blame] | 1122 | ClearPageUptodate(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1123 | return -ENOENT; |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 1124 | } |
| 1125 | |
Chao Yu | 7a9d754 | 2016-02-22 18:36:38 +0800 | [diff] [blame] | 1126 | fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1127 | return f2fs_submit_page_bio(&fio); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1128 | } |
| 1129 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1130 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1131 | * Readahead a node page |
| 1132 | */ |
| 1133 | void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) |
| 1134 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1135 | struct page *apage; |
Jaegeuk Kim | 56ae674 | 2013-03-31 12:47:20 +0900 | [diff] [blame] | 1136 | int err; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1137 | |
Chao Yu | e8458725 | 2016-01-08 20:13:37 +0800 | [diff] [blame] | 1138 | if (!nid) |
| 1139 | return; |
| 1140 | f2fs_bug_on(sbi, check_nid_range(sbi, nid)); |
| 1141 | |
Fan Li | 999270d | 2016-02-29 14:29:51 +0800 | [diff] [blame] | 1142 | rcu_read_lock(); |
| 1143 | apage = radix_tree_lookup(&NODE_MAPPING(sbi)->page_tree, nid); |
| 1144 | rcu_read_unlock(); |
| 1145 | if (apage) |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 1146 | return; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1147 | |
Jaegeuk Kim | 300e129 | 2016-04-29 16:11:53 -0700 | [diff] [blame] | 1148 | apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1149 | if (!apage) |
| 1150 | return; |
| 1151 | |
Christoph Hellwig | 7024628 | 2016-07-19 11:28:41 +0200 | [diff] [blame] | 1152 | err = read_node_page(apage, REQ_RAHEAD); |
Jaegeuk Kim | 86531d6 | 2015-07-15 13:08:21 -0700 | [diff] [blame] | 1153 | f2fs_put_page(apage, err ? 1 : 0); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1154 | } |
| 1155 | |
Jaegeuk Kim | 17a0ee5 | 2016-03-08 09:04:35 -0800 | [diff] [blame] | 1156 | static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, |
Chao Yu | 0e022ea | 2016-01-05 16:52:46 +0800 | [diff] [blame] | 1157 | struct page *parent, int start) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1158 | { |
Jaegeuk Kim | 56ae674 | 2013-03-31 12:47:20 +0900 | [diff] [blame] | 1159 | struct page *page; |
| 1160 | int err; |
Jaegeuk Kim | 4aa69d5 | 2015-12-23 14:17:47 -0800 | [diff] [blame] | 1161 | |
| 1162 | if (!nid) |
| 1163 | return ERR_PTR(-ENOENT); |
| 1164 | f2fs_bug_on(sbi, check_nid_range(sbi, nid)); |
Jaegeuk Kim | afcb7ca0 | 2013-04-26 11:55:17 +0900 | [diff] [blame] | 1165 | repeat: |
Jaegeuk Kim | 300e129 | 2016-04-29 16:11:53 -0700 | [diff] [blame] | 1166 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1167 | if (!page) |
| 1168 | return ERR_PTR(-ENOMEM); |
| 1169 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1170 | err = read_node_page(page, 0); |
Jaegeuk Kim | 86531d6 | 2015-07-15 13:08:21 -0700 | [diff] [blame] | 1171 | if (err < 0) { |
| 1172 | f2fs_put_page(page, 1); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1173 | return ERR_PTR(err); |
Chao Yu | e1c51b9f | 2015-12-11 16:08:22 +0800 | [diff] [blame] | 1174 | } else if (err == LOCKED_PAGE) { |
Chao Yu | b8329ee | 2017-06-07 11:17:35 +0800 | [diff] [blame] | 1175 | err = 0; |
Chao Yu | e1c51b9f | 2015-12-11 16:08:22 +0800 | [diff] [blame] | 1176 | goto page_hit; |
Jaegeuk Kim | 86531d6 | 2015-07-15 13:08:21 -0700 | [diff] [blame] | 1177 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1178 | |
Chao Yu | 0e022ea | 2016-01-05 16:52:46 +0800 | [diff] [blame] | 1179 | if (parent) |
Jaegeuk Kim | 79344ef | 2016-05-06 16:19:43 -0700 | [diff] [blame] | 1180 | ra_node_pages(parent, start + 1, MAX_RA_NODE); |
Chao Yu | 0e022ea | 2016-01-05 16:52:46 +0800 | [diff] [blame] | 1181 | |
Chao Yu | e1c51b9f | 2015-12-11 16:08:22 +0800 | [diff] [blame] | 1182 | lock_page(page); |
| 1183 | |
Jaegeuk Kim | 4ef51a8 | 2014-01-21 18:51:16 +0900 | [diff] [blame] | 1184 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { |
Jaegeuk Kim | afcb7ca0 | 2013-04-26 11:55:17 +0900 | [diff] [blame] | 1185 | f2fs_put_page(page, 1); |
| 1186 | goto repeat; |
| 1187 | } |
Chao Yu | 1563ac7 | 2016-07-03 22:05:12 +0800 | [diff] [blame] | 1188 | |
Chao Yu | b8329ee | 2017-06-07 11:17:35 +0800 | [diff] [blame] | 1189 | if (unlikely(!PageUptodate(page))) { |
| 1190 | err = -EIO; |
Chao Yu | 1563ac7 | 2016-07-03 22:05:12 +0800 | [diff] [blame] | 1191 | goto out_err; |
Chao Yu | b8329ee | 2017-06-07 11:17:35 +0800 | [diff] [blame] | 1192 | } |
Chao Yu | 4310125 | 2017-07-31 20:19:09 +0800 | [diff] [blame] | 1193 | |
| 1194 | if (!f2fs_inode_chksum_verify(sbi, page)) { |
| 1195 | err = -EBADMSG; |
| 1196 | goto out_err; |
| 1197 | } |
Chao Yu | e1c51b9f | 2015-12-11 16:08:22 +0800 | [diff] [blame] | 1198 | page_hit: |
Yunlong Song | 0c9df7f | 2016-05-26 19:40:29 +0800 | [diff] [blame] | 1199 | if(unlikely(nid != nid_of_node(page))) { |
Chao Yu | b8329ee | 2017-06-07 11:17:35 +0800 | [diff] [blame] | 1200 | f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, " |
| 1201 | "nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", |
| 1202 | nid, nid_of_node(page), ino_of_node(page), |
| 1203 | ofs_of_node(page), cpver_of_node(page), |
| 1204 | next_blkaddr_of_node(page)); |
Chao Yu | b8329ee | 2017-06-07 11:17:35 +0800 | [diff] [blame] | 1205 | err = -EINVAL; |
Yunlong Song | 0c9df7f | 2016-05-26 19:40:29 +0800 | [diff] [blame] | 1206 | out_err: |
Jaegeuk Kim | c5497ec | 2017-08-31 16:54:51 -0700 | [diff] [blame] | 1207 | ClearPageUptodate(page); |
Yunlong Song | 0c9df7f | 2016-05-26 19:40:29 +0800 | [diff] [blame] | 1208 | f2fs_put_page(page, 1); |
Chao Yu | b8329ee | 2017-06-07 11:17:35 +0800 | [diff] [blame] | 1209 | return ERR_PTR(err); |
Yunlong Song | 0c9df7f | 2016-05-26 19:40:29 +0800 | [diff] [blame] | 1210 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1211 | return page; |
| 1212 | } |
| 1213 | |
Chao Yu | 0e022ea | 2016-01-05 16:52:46 +0800 | [diff] [blame] | 1214 | struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) |
| 1215 | { |
| 1216 | return __get_node_page(sbi, nid, NULL, 0); |
| 1217 | } |
| 1218 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1219 | struct page *get_node_page_ra(struct page *parent, int start) |
| 1220 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1221 | struct f2fs_sb_info *sbi = F2FS_P_SB(parent); |
Chao Yu | 0e022ea | 2016-01-05 16:52:46 +0800 | [diff] [blame] | 1222 | nid_t nid = get_nid(parent, start, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1223 | |
Chao Yu | 0e022ea | 2016-01-05 16:52:46 +0800 | [diff] [blame] | 1224 | return __get_node_page(sbi, nid, parent, start); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1225 | } |
| 1226 | |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1227 | static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) |
| 1228 | { |
| 1229 | struct inode *inode; |
| 1230 | struct page *page; |
Chao Yu | 0f3311a | 2016-05-21 00:11:09 +0800 | [diff] [blame] | 1231 | int ret; |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1232 | |
| 1233 | /* should flush inline_data before evict_inode */ |
| 1234 | inode = ilookup(sbi->sb, ino); |
| 1235 | if (!inode) |
| 1236 | return; |
| 1237 | |
Chao Yu | 58ddec8 | 2017-10-28 16:52:30 +0800 | [diff] [blame] | 1238 | page = f2fs_pagecache_get_page(inode->i_mapping, 0, |
| 1239 | FGP_LOCK|FGP_NOWAIT, 0); |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1240 | if (!page) |
| 1241 | goto iput_out; |
| 1242 | |
| 1243 | if (!PageUptodate(page)) |
| 1244 | goto page_out; |
| 1245 | |
| 1246 | if (!PageDirty(page)) |
| 1247 | goto page_out; |
| 1248 | |
| 1249 | if (!clear_page_dirty_for_io(page)) |
| 1250 | goto page_out; |
| 1251 | |
Chao Yu | 0f3311a | 2016-05-21 00:11:09 +0800 | [diff] [blame] | 1252 | ret = f2fs_write_inline_data(inode, page); |
| 1253 | inode_dec_dirty_pages(inode); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1254 | remove_dirty_inode(inode); |
Chao Yu | 0f3311a | 2016-05-21 00:11:09 +0800 | [diff] [blame] | 1255 | if (ret) |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1256 | set_page_dirty(page); |
| 1257 | page_out: |
Jaegeuk Kim | 4a6de50 | 2016-03-30 11:25:31 -0700 | [diff] [blame] | 1258 | f2fs_put_page(page, 1); |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1259 | iput_out: |
| 1260 | iput(inode); |
| 1261 | } |
| 1262 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1263 | static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1264 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1265 | pgoff_t index, end; |
| 1266 | struct pagevec pvec; |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1267 | struct page *last_page = NULL; |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1268 | |
| 1269 | pagevec_init(&pvec, 0); |
| 1270 | index = 0; |
| 1271 | end = ULONG_MAX; |
| 1272 | |
| 1273 | while (index <= end) { |
| 1274 | int i, nr_pages; |
| 1275 | nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, |
| 1276 | PAGECACHE_TAG_DIRTY, |
| 1277 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); |
| 1278 | if (nr_pages == 0) |
| 1279 | break; |
| 1280 | |
| 1281 | for (i = 0; i < nr_pages; i++) { |
| 1282 | struct page *page = pvec.pages[i]; |
| 1283 | |
| 1284 | if (unlikely(f2fs_cp_error(sbi))) { |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1285 | f2fs_put_page(last_page, 0); |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1286 | pagevec_release(&pvec); |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1287 | return ERR_PTR(-EIO); |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1288 | } |
| 1289 | |
| 1290 | if (!IS_DNODE(page) || !is_cold_node(page)) |
| 1291 | continue; |
| 1292 | if (ino_of_node(page) != ino) |
| 1293 | continue; |
| 1294 | |
| 1295 | lock_page(page); |
| 1296 | |
| 1297 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { |
| 1298 | continue_unlock: |
| 1299 | unlock_page(page); |
| 1300 | continue; |
| 1301 | } |
| 1302 | if (ino_of_node(page) != ino) |
| 1303 | goto continue_unlock; |
| 1304 | |
| 1305 | if (!PageDirty(page)) { |
| 1306 | /* someone wrote it for us */ |
| 1307 | goto continue_unlock; |
| 1308 | } |
| 1309 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1310 | if (last_page) |
| 1311 | f2fs_put_page(last_page, 0); |
| 1312 | |
| 1313 | get_page(page); |
| 1314 | last_page = page; |
| 1315 | unlock_page(page); |
| 1316 | } |
| 1317 | pagevec_release(&pvec); |
| 1318 | cond_resched(); |
| 1319 | } |
| 1320 | return last_page; |
| 1321 | } |
| 1322 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1323 | static int __write_node_page(struct page *page, bool atomic, bool *submitted, |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 1324 | struct writeback_control *wbc, bool do_balance, |
| 1325 | enum iostat_type io_type) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1326 | { |
| 1327 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
| 1328 | nid_t nid; |
| 1329 | struct node_info ni; |
| 1330 | struct f2fs_io_info fio = { |
| 1331 | .sbi = sbi, |
Chao Yu | f014be8 | 2017-09-29 13:59:38 +0800 | [diff] [blame] | 1332 | .ino = ino_of_node(page), |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1333 | .type = NODE, |
| 1334 | .op = REQ_OP_WRITE, |
| 1335 | .op_flags = wbc_to_write_flags(wbc), |
| 1336 | .page = page, |
| 1337 | .encrypted_page = NULL, |
| 1338 | .submitted = false, |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 1339 | .io_type = io_type, |
Yufen Yu | cbd5e5a | 2018-01-09 19:33:39 +0800 | [diff] [blame] | 1340 | .io_wbc = wbc, |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1341 | }; |
| 1342 | |
| 1343 | trace_f2fs_writepage(page, NODE); |
| 1344 | |
Chao Yu | 86f78c1 | 2018-01-18 17:29:10 +0800 | [diff] [blame] | 1345 | if (unlikely(f2fs_cp_error(sbi))) { |
| 1346 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
| 1347 | unlock_page(page); |
| 1348 | return 0; |
| 1349 | } |
| 1350 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1351 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
| 1352 | goto redirty_out; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1353 | |
| 1354 | /* get old block addr of this node page */ |
| 1355 | nid = nid_of_node(page); |
| 1356 | f2fs_bug_on(sbi, page->index != nid); |
| 1357 | |
| 1358 | if (wbc->for_reclaim) { |
| 1359 | if (!down_read_trylock(&sbi->node_write)) |
| 1360 | goto redirty_out; |
| 1361 | } else { |
| 1362 | down_read(&sbi->node_write); |
| 1363 | } |
| 1364 | |
| 1365 | get_node_info(sbi, nid, &ni); |
| 1366 | |
| 1367 | /* This page is already truncated */ |
| 1368 | if (unlikely(ni.blk_addr == NULL_ADDR)) { |
| 1369 | ClearPageUptodate(page); |
| 1370 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
| 1371 | up_read(&sbi->node_write); |
| 1372 | unlock_page(page); |
| 1373 | return 0; |
| 1374 | } |
| 1375 | |
| 1376 | if (atomic && !test_opt(sbi, NOBARRIER)) |
| 1377 | fio.op_flags |= REQ_PREFLUSH | REQ_FUA; |
| 1378 | |
| 1379 | set_page_writeback(page); |
| 1380 | fio.old_blkaddr = ni.blk_addr; |
| 1381 | write_node_page(nid, &fio); |
| 1382 | set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); |
| 1383 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
| 1384 | up_read(&sbi->node_write); |
| 1385 | |
| 1386 | if (wbc->for_reclaim) { |
Jaegeuk Kim | 9bc576a | 2017-05-10 11:28:38 -0700 | [diff] [blame] | 1387 | f2fs_submit_merged_write_cond(sbi, page->mapping->host, 0, |
| 1388 | page->index, NODE); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1389 | submitted = NULL; |
| 1390 | } |
| 1391 | |
| 1392 | unlock_page(page); |
| 1393 | |
| 1394 | if (unlikely(f2fs_cp_error(sbi))) { |
Jaegeuk Kim | 9bc576a | 2017-05-10 11:28:38 -0700 | [diff] [blame] | 1395 | f2fs_submit_merged_write(sbi, NODE); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1396 | submitted = NULL; |
| 1397 | } |
| 1398 | if (submitted) |
| 1399 | *submitted = fio.submitted; |
| 1400 | |
Yunlong Song | 0c535c5 | 2017-07-27 20:11:00 +0800 | [diff] [blame] | 1401 | if (do_balance) |
| 1402 | f2fs_balance_fs(sbi, false); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1403 | return 0; |
| 1404 | |
| 1405 | redirty_out: |
| 1406 | redirty_page_for_writepage(wbc, page); |
| 1407 | return AOP_WRITEPAGE_ACTIVATE; |
| 1408 | } |
| 1409 | |
Yunlei He | 247e895 | 2017-10-30 14:18:55 +0800 | [diff] [blame] | 1410 | void move_node_page(struct page *node_page, int gc_type) |
| 1411 | { |
| 1412 | if (gc_type == FG_GC) { |
| 1413 | struct writeback_control wbc = { |
| 1414 | .sync_mode = WB_SYNC_ALL, |
| 1415 | .nr_to_write = 1, |
| 1416 | .for_reclaim = 0, |
| 1417 | }; |
| 1418 | |
| 1419 | set_page_dirty(node_page); |
| 1420 | f2fs_wait_on_page_writeback(node_page, NODE, true); |
| 1421 | |
| 1422 | f2fs_bug_on(F2FS_P_SB(node_page), PageWriteback(node_page)); |
| 1423 | if (!clear_page_dirty_for_io(node_page)) |
| 1424 | goto out_page; |
| 1425 | |
| 1426 | if (__write_node_page(node_page, false, NULL, |
| 1427 | &wbc, false, FS_GC_NODE_IO)) |
| 1428 | unlock_page(node_page); |
| 1429 | goto release_page; |
| 1430 | } else { |
| 1431 | /* set page dirty and write it */ |
| 1432 | if (!PageWriteback(node_page)) |
| 1433 | set_page_dirty(node_page); |
| 1434 | } |
| 1435 | out_page: |
| 1436 | unlock_page(node_page); |
| 1437 | release_page: |
| 1438 | f2fs_put_page(node_page, 0); |
| 1439 | } |
| 1440 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1441 | static int f2fs_write_node_page(struct page *page, |
| 1442 | struct writeback_control *wbc) |
| 1443 | { |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 1444 | return __write_node_page(page, false, NULL, wbc, false, FS_NODE_IO); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1445 | } |
| 1446 | |
Jaegeuk Kim | 26de9b1 | 2016-05-20 20:42:37 -0700 | [diff] [blame] | 1447 | int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1448 | struct writeback_control *wbc, bool atomic) |
| 1449 | { |
| 1450 | pgoff_t index, end; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1451 | pgoff_t last_idx = ULONG_MAX; |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1452 | struct pagevec pvec; |
| 1453 | int ret = 0; |
| 1454 | struct page *last_page = NULL; |
| 1455 | bool marked = false; |
Jaegeuk Kim | 26de9b1 | 2016-05-20 20:42:37 -0700 | [diff] [blame] | 1456 | nid_t ino = inode->i_ino; |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1457 | |
| 1458 | if (atomic) { |
| 1459 | last_page = last_fsync_dnode(sbi, ino); |
| 1460 | if (IS_ERR_OR_NULL(last_page)) |
| 1461 | return PTR_ERR_OR_ZERO(last_page); |
| 1462 | } |
| 1463 | retry: |
| 1464 | pagevec_init(&pvec, 0); |
| 1465 | index = 0; |
| 1466 | end = ULONG_MAX; |
| 1467 | |
| 1468 | while (index <= end) { |
| 1469 | int i, nr_pages; |
| 1470 | nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, |
| 1471 | PAGECACHE_TAG_DIRTY, |
| 1472 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); |
| 1473 | if (nr_pages == 0) |
| 1474 | break; |
| 1475 | |
| 1476 | for (i = 0; i < nr_pages; i++) { |
| 1477 | struct page *page = pvec.pages[i]; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1478 | bool submitted = false; |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1479 | |
| 1480 | if (unlikely(f2fs_cp_error(sbi))) { |
| 1481 | f2fs_put_page(last_page, 0); |
| 1482 | pagevec_release(&pvec); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1483 | ret = -EIO; |
| 1484 | goto out; |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1485 | } |
| 1486 | |
| 1487 | if (!IS_DNODE(page) || !is_cold_node(page)) |
| 1488 | continue; |
| 1489 | if (ino_of_node(page) != ino) |
| 1490 | continue; |
| 1491 | |
| 1492 | lock_page(page); |
| 1493 | |
| 1494 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { |
| 1495 | continue_unlock: |
| 1496 | unlock_page(page); |
| 1497 | continue; |
| 1498 | } |
| 1499 | if (ino_of_node(page) != ino) |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1500 | goto continue_unlock; |
| 1501 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1502 | if (!PageDirty(page) && page != last_page) { |
| 1503 | /* someone wrote it for us */ |
| 1504 | goto continue_unlock; |
| 1505 | } |
| 1506 | |
| 1507 | f2fs_wait_on_page_writeback(page, NODE, true); |
| 1508 | BUG_ON(PageWriteback(page)); |
| 1509 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1510 | set_fsync_mark(page, 0); |
| 1511 | set_dentry_mark(page, 0); |
| 1512 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1513 | if (!atomic || page == last_page) { |
| 1514 | set_fsync_mark(page, 1); |
Jaegeuk Kim | 26de9b1 | 2016-05-20 20:42:37 -0700 | [diff] [blame] | 1515 | if (IS_INODE(page)) { |
| 1516 | if (is_inode_flag_set(inode, |
| 1517 | FI_DIRTY_INODE)) |
| 1518 | update_inode(inode, page); |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1519 | set_dentry_mark(page, |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1520 | need_dentry_mark(sbi, ino)); |
Jaegeuk Kim | 26de9b1 | 2016-05-20 20:42:37 -0700 | [diff] [blame] | 1521 | } |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1522 | /* may be written by other thread */ |
| 1523 | if (!PageDirty(page)) |
| 1524 | set_page_dirty(page); |
| 1525 | } |
| 1526 | |
| 1527 | if (!clear_page_dirty_for_io(page)) |
| 1528 | goto continue_unlock; |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1529 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1530 | ret = __write_node_page(page, atomic && |
| 1531 | page == last_page, |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 1532 | &submitted, wbc, true, |
| 1533 | FS_NODE_IO); |
Jaegeuk Kim | c267ec1 | 2016-04-15 09:25:04 -0700 | [diff] [blame] | 1534 | if (ret) { |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1535 | unlock_page(page); |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1536 | f2fs_put_page(last_page, 0); |
| 1537 | break; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1538 | } else if (submitted) { |
| 1539 | last_idx = page->index; |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1540 | } |
Chao Yu | 3f5f495 | 2016-09-29 18:50:10 +0800 | [diff] [blame] | 1541 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1542 | if (page == last_page) { |
| 1543 | f2fs_put_page(page, 0); |
| 1544 | marked = true; |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1545 | break; |
Jaegeuk Kim | c267ec1 | 2016-04-15 09:25:04 -0700 | [diff] [blame] | 1546 | } |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1547 | } |
| 1548 | pagevec_release(&pvec); |
| 1549 | cond_resched(); |
| 1550 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1551 | if (ret || marked) |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1552 | break; |
| 1553 | } |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1554 | if (!ret && atomic && !marked) { |
| 1555 | f2fs_msg(sbi->sb, KERN_DEBUG, |
| 1556 | "Retry to write fsync mark: ino=%u, idx=%lx", |
| 1557 | ino, last_page->index); |
| 1558 | lock_page(last_page); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1559 | f2fs_wait_on_page_writeback(last_page, NODE, true); |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1560 | set_page_dirty(last_page); |
| 1561 | unlock_page(last_page); |
| 1562 | goto retry; |
| 1563 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1564 | out: |
| 1565 | if (last_idx != ULONG_MAX) |
Jaegeuk Kim | 9bc576a | 2017-05-10 11:28:38 -0700 | [diff] [blame] | 1566 | f2fs_submit_merged_write_cond(sbi, NULL, ino, last_idx, NODE); |
Jaegeuk Kim | c267ec1 | 2016-04-15 09:25:04 -0700 | [diff] [blame] | 1567 | return ret ? -EIO: 0; |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1568 | } |
| 1569 | |
Yunlong Song | 0c535c5 | 2017-07-27 20:11:00 +0800 | [diff] [blame] | 1570 | int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc, |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 1571 | bool do_balance, enum iostat_type io_type) |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1572 | { |
| 1573 | pgoff_t index, end; |
| 1574 | struct pagevec pvec; |
| 1575 | int step = 0; |
Jaegeuk Kim | 12bb0a8 | 2016-03-11 15:33:22 -0800 | [diff] [blame] | 1576 | int nwritten = 0; |
Chao Yu | 3f5f495 | 2016-09-29 18:50:10 +0800 | [diff] [blame] | 1577 | int ret = 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1578 | |
| 1579 | pagevec_init(&pvec, 0); |
| 1580 | |
| 1581 | next_step: |
| 1582 | index = 0; |
Chao Yu | 80dd9c0 | 2016-02-24 17:20:44 +0800 | [diff] [blame] | 1583 | end = ULONG_MAX; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1584 | |
| 1585 | while (index <= end) { |
| 1586 | int i, nr_pages; |
Jaegeuk Kim | 4ef51a8 | 2014-01-21 18:51:16 +0900 | [diff] [blame] | 1587 | nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1588 | PAGECACHE_TAG_DIRTY, |
| 1589 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); |
| 1590 | if (nr_pages == 0) |
| 1591 | break; |
| 1592 | |
| 1593 | for (i = 0; i < nr_pages; i++) { |
| 1594 | struct page *page = pvec.pages[i]; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1595 | bool submitted = false; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1596 | |
| 1597 | /* |
| 1598 | * flushing sequence with step: |
| 1599 | * 0. indirect nodes |
| 1600 | * 1. dentry dnodes |
| 1601 | * 2. file dnodes |
| 1602 | */ |
| 1603 | if (step == 0 && IS_DNODE(page)) |
| 1604 | continue; |
| 1605 | if (step == 1 && (!IS_DNODE(page) || |
| 1606 | is_cold_node(page))) |
| 1607 | continue; |
| 1608 | if (step == 2 && (!IS_DNODE(page) || |
| 1609 | !is_cold_node(page))) |
| 1610 | continue; |
Chao Yu | 9a4cbc9 | 2016-02-22 18:35:46 +0800 | [diff] [blame] | 1611 | lock_node: |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1612 | if (!trylock_page(page)) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1613 | continue; |
| 1614 | |
Jaegeuk Kim | 4ef51a8 | 2014-01-21 18:51:16 +0900 | [diff] [blame] | 1615 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1616 | continue_unlock: |
| 1617 | unlock_page(page); |
| 1618 | continue; |
| 1619 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1620 | |
| 1621 | if (!PageDirty(page)) { |
| 1622 | /* someone wrote it for us */ |
| 1623 | goto continue_unlock; |
| 1624 | } |
| 1625 | |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1626 | /* flush inline_data */ |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1627 | if (is_inline_node(page)) { |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1628 | clear_inline_node(page); |
| 1629 | unlock_page(page); |
| 1630 | flush_inline_data(sbi, ino_of_node(page)); |
Chao Yu | 9a4cbc9 | 2016-02-22 18:35:46 +0800 | [diff] [blame] | 1631 | goto lock_node; |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1632 | } |
| 1633 | |
Jaegeuk Kim | fa3d2bd | 2016-01-28 11:48:52 -0800 | [diff] [blame] | 1634 | f2fs_wait_on_page_writeback(page, NODE, true); |
| 1635 | |
| 1636 | BUG_ON(PageWriteback(page)); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1637 | if (!clear_page_dirty_for_io(page)) |
| 1638 | goto continue_unlock; |
| 1639 | |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1640 | set_fsync_mark(page, 0); |
| 1641 | set_dentry_mark(page, 0); |
Jaegeuk Kim | 5274651 | 2014-08-11 18:18:36 -0700 | [diff] [blame] | 1642 | |
Yunlong Song | 0c535c5 | 2017-07-27 20:11:00 +0800 | [diff] [blame] | 1643 | ret = __write_node_page(page, false, &submitted, |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 1644 | wbc, do_balance, io_type); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1645 | if (ret) |
Jaegeuk Kim | 5274651 | 2014-08-11 18:18:36 -0700 | [diff] [blame] | 1646 | unlock_page(page); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1647 | else if (submitted) |
Chao Yu | 3f5f495 | 2016-09-29 18:50:10 +0800 | [diff] [blame] | 1648 | nwritten++; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1649 | |
| 1650 | if (--wbc->nr_to_write == 0) |
| 1651 | break; |
| 1652 | } |
| 1653 | pagevec_release(&pvec); |
| 1654 | cond_resched(); |
| 1655 | |
| 1656 | if (wbc->nr_to_write == 0) { |
| 1657 | step = 2; |
| 1658 | break; |
| 1659 | } |
| 1660 | } |
| 1661 | |
| 1662 | if (step < 2) { |
| 1663 | step++; |
| 1664 | goto next_step; |
| 1665 | } |
Chao Yu | 86f78c1 | 2018-01-18 17:29:10 +0800 | [diff] [blame] | 1666 | |
Chao Yu | 3f5f495 | 2016-09-29 18:50:10 +0800 | [diff] [blame] | 1667 | if (nwritten) |
Jaegeuk Kim | 9bc576a | 2017-05-10 11:28:38 -0700 | [diff] [blame] | 1668 | f2fs_submit_merged_write(sbi, NODE); |
Chao Yu | 86f78c1 | 2018-01-18 17:29:10 +0800 | [diff] [blame] | 1669 | |
| 1670 | if (unlikely(f2fs_cp_error(sbi))) |
| 1671 | return -EIO; |
Chao Yu | 3f5f495 | 2016-09-29 18:50:10 +0800 | [diff] [blame] | 1672 | return ret; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1673 | } |
| 1674 | |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1675 | int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) |
| 1676 | { |
Chao Yu | 80dd9c0 | 2016-02-24 17:20:44 +0800 | [diff] [blame] | 1677 | pgoff_t index = 0, end = ULONG_MAX; |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1678 | struct pagevec pvec; |
Miklos Szeredi | 280db3c | 2016-09-16 12:44:21 +0200 | [diff] [blame] | 1679 | int ret2, ret = 0; |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1680 | |
| 1681 | pagevec_init(&pvec, 0); |
Jaegeuk Kim | 4ef51a8 | 2014-01-21 18:51:16 +0900 | [diff] [blame] | 1682 | |
| 1683 | while (index <= end) { |
| 1684 | int i, nr_pages; |
| 1685 | nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, |
| 1686 | PAGECACHE_TAG_WRITEBACK, |
| 1687 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); |
| 1688 | if (nr_pages == 0) |
| 1689 | break; |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1690 | |
| 1691 | for (i = 0; i < nr_pages; i++) { |
| 1692 | struct page *page = pvec.pages[i]; |
| 1693 | |
| 1694 | /* until radix tree lookup accepts end_index */ |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 1695 | if (unlikely(page->index > end)) |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1696 | continue; |
| 1697 | |
Chao Yu | 4bf08ff | 2013-11-04 10:28:33 +0800 | [diff] [blame] | 1698 | if (ino && ino_of_node(page) == ino) { |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 1699 | f2fs_wait_on_page_writeback(page, NODE, true); |
Chao Yu | 4bf08ff | 2013-11-04 10:28:33 +0800 | [diff] [blame] | 1700 | if (TestClearPageError(page)) |
| 1701 | ret = -EIO; |
| 1702 | } |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1703 | } |
| 1704 | pagevec_release(&pvec); |
| 1705 | cond_resched(); |
| 1706 | } |
| 1707 | |
Miklos Szeredi | 280db3c | 2016-09-16 12:44:21 +0200 | [diff] [blame] | 1708 | ret2 = filemap_check_errors(NODE_MAPPING(sbi)); |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1709 | if (!ret) |
| 1710 | ret = ret2; |
| 1711 | return ret; |
| 1712 | } |
| 1713 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1714 | static int f2fs_write_node_pages(struct address_space *mapping, |
| 1715 | struct writeback_control *wbc) |
| 1716 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1717 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
Jaegeuk Kim | 9dfa1ba | 2016-07-13 19:33:19 -0700 | [diff] [blame] | 1718 | struct blk_plug plug; |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 1719 | long diff; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1720 | |
Chao Yu | 00cc7ed | 2017-06-29 23:20:45 +0800 | [diff] [blame] | 1721 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
| 1722 | goto skip_write; |
| 1723 | |
Jaegeuk Kim | 4660f9c | 2013-10-24 14:19:18 +0900 | [diff] [blame] | 1724 | /* balancing f2fs's metadata in background */ |
| 1725 | f2fs_balance_fs_bg(sbi); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1726 | |
Jaegeuk Kim | a7fdffb | 2013-01-18 14:54:13 +0900 | [diff] [blame] | 1727 | /* collect a number of dirty node pages and write together */ |
Jaegeuk Kim | 87d6f89 | 2014-03-18 12:40:49 +0900 | [diff] [blame] | 1728 | if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) |
Jaegeuk Kim | d3baf95 | 2014-03-18 13:43:05 +0900 | [diff] [blame] | 1729 | goto skip_write; |
Jaegeuk Kim | a7fdffb | 2013-01-18 14:54:13 +0900 | [diff] [blame] | 1730 | |
Yunlei He | d31c7c3 | 2016-02-04 16:14:00 +0800 | [diff] [blame] | 1731 | trace_f2fs_writepages(mapping->host, wbc, NODE); |
| 1732 | |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 1733 | diff = nr_pages_to_write(sbi, NODE, wbc); |
Jaegeuk Kim | fb5566d | 2014-01-08 10:09:51 +0900 | [diff] [blame] | 1734 | wbc->sync_mode = WB_SYNC_NONE; |
Jaegeuk Kim | 9dfa1ba | 2016-07-13 19:33:19 -0700 | [diff] [blame] | 1735 | blk_start_plug(&plug); |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 1736 | sync_node_pages(sbi, wbc, true, FS_NODE_IO); |
Jaegeuk Kim | 9dfa1ba | 2016-07-13 19:33:19 -0700 | [diff] [blame] | 1737 | blk_finish_plug(&plug); |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 1738 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1739 | return 0; |
Jaegeuk Kim | d3baf95 | 2014-03-18 13:43:05 +0900 | [diff] [blame] | 1740 | |
| 1741 | skip_write: |
| 1742 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); |
Yunlei He | d31c7c3 | 2016-02-04 16:14:00 +0800 | [diff] [blame] | 1743 | trace_f2fs_writepages(mapping->host, wbc, NODE); |
Jaegeuk Kim | d3baf95 | 2014-03-18 13:43:05 +0900 | [diff] [blame] | 1744 | return 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1745 | } |
| 1746 | |
| 1747 | static int f2fs_set_node_page_dirty(struct page *page) |
| 1748 | { |
Jaegeuk Kim | 26c6b88 | 2013-10-24 17:53:29 +0900 | [diff] [blame] | 1749 | trace_f2fs_set_page_dirty(page, NODE); |
| 1750 | |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 1751 | if (!PageUptodate(page)) |
| 1752 | SetPageUptodate(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1753 | if (!PageDirty(page)) { |
Jaegeuk Kim | fe76b79 | 2016-06-30 18:40:10 -0700 | [diff] [blame] | 1754 | f2fs_set_page_dirty_nobuffers(page); |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1755 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1756 | SetPagePrivate(page); |
Jaegeuk Kim | 9e4ded3 | 2014-12-17 19:58:58 -0800 | [diff] [blame] | 1757 | f2fs_trace_pid(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1758 | return 1; |
| 1759 | } |
| 1760 | return 0; |
| 1761 | } |
| 1762 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1763 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1764 | * Structure of the f2fs node operations |
| 1765 | */ |
| 1766 | const struct address_space_operations f2fs_node_aops = { |
| 1767 | .writepage = f2fs_write_node_page, |
| 1768 | .writepages = f2fs_write_node_pages, |
| 1769 | .set_page_dirty = f2fs_set_node_page_dirty, |
Chao Yu | 487261f | 2015-02-05 17:44:29 +0800 | [diff] [blame] | 1770 | .invalidatepage = f2fs_invalidate_page, |
| 1771 | .releasepage = f2fs_release_page, |
Weichao Guo | 5b7a487 | 2016-09-20 05:03:27 +0800 | [diff] [blame] | 1772 | #ifdef CONFIG_MIGRATION |
| 1773 | .migratepage = f2fs_migrate_page, |
| 1774 | #endif |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1775 | }; |
| 1776 | |
Jaegeuk Kim | 8a7ed66 | 2014-02-21 14:29:35 +0900 | [diff] [blame] | 1777 | static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, |
| 1778 | nid_t n) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1779 | { |
Jaegeuk Kim | 8a7ed66 | 2014-02-21 14:29:35 +0900 | [diff] [blame] | 1780 | return radix_tree_lookup(&nm_i->free_nid_root, n); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1781 | } |
| 1782 | |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1783 | static int __insert_free_nid(struct f2fs_sb_info *sbi, |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 1784 | struct free_nid *i, enum nid_state state) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1785 | { |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 1786 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1787 | |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 1788 | int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); |
| 1789 | if (err) |
| 1790 | return err; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1791 | |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1792 | f2fs_bug_on(sbi, state != i->state); |
| 1793 | nm_i->nid_cnt[state]++; |
| 1794 | if (state == FREE_NID) |
| 1795 | list_add_tail(&i->list, &nm_i->free_nid_list); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1796 | return 0; |
| 1797 | } |
| 1798 | |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1799 | static void __remove_free_nid(struct f2fs_sb_info *sbi, |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 1800 | struct free_nid *i, enum nid_state state) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1801 | { |
| 1802 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 1803 | |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1804 | f2fs_bug_on(sbi, state != i->state); |
| 1805 | nm_i->nid_cnt[state]--; |
| 1806 | if (state == FREE_NID) |
| 1807 | list_del(&i->list); |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 1808 | radix_tree_delete(&nm_i->free_nid_root, i->nid); |
| 1809 | } |
| 1810 | |
| 1811 | static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, |
| 1812 | enum nid_state org_state, enum nid_state dst_state) |
| 1813 | { |
| 1814 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 1815 | |
| 1816 | f2fs_bug_on(sbi, org_state != i->state); |
| 1817 | i->state = dst_state; |
| 1818 | nm_i->nid_cnt[org_state]--; |
| 1819 | nm_i->nid_cnt[dst_state]++; |
| 1820 | |
| 1821 | switch (dst_state) { |
| 1822 | case PREALLOC_NID: |
| 1823 | list_del(&i->list); |
| 1824 | break; |
| 1825 | case FREE_NID: |
| 1826 | list_add_tail(&i->list, &nm_i->free_nid_list); |
| 1827 | break; |
| 1828 | default: |
| 1829 | BUG_ON(1); |
| 1830 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1831 | } |
| 1832 | |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1833 | static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, |
| 1834 | bool set, bool build) |
| 1835 | { |
| 1836 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 1837 | unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); |
| 1838 | unsigned int nid_ofs = nid - START_NID(nid); |
| 1839 | |
| 1840 | if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) |
| 1841 | return; |
| 1842 | |
| 1843 | if (set) { |
| 1844 | if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) |
| 1845 | return; |
| 1846 | __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); |
| 1847 | nm_i->free_nid_count[nat_ofs]++; |
| 1848 | } else { |
| 1849 | if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) |
| 1850 | return; |
| 1851 | __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); |
| 1852 | if (!build) |
| 1853 | nm_i->free_nid_count[nat_ofs]--; |
| 1854 | } |
| 1855 | } |
| 1856 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1857 | /* return if the nid is recognized as free */ |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1858 | static bool add_free_nid(struct f2fs_sb_info *sbi, |
| 1859 | nid_t nid, bool build, bool update) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1860 | { |
| 1861 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 1862 | struct free_nid *i, *e; |
| 1863 | struct nat_entry *ne; |
| 1864 | int err = -EINVAL; |
| 1865 | bool ret = false; |
Jaegeuk Kim | 9198ace | 2013-04-25 13:21:12 +0900 | [diff] [blame] | 1866 | |
| 1867 | /* 0 nid should not be used */ |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 1868 | if (unlikely(nid == 0)) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1869 | return false; |
Gu Zheng | 7bd5938 | 2013-10-22 14:52:26 +0800 | [diff] [blame] | 1870 | |
| 1871 | i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1872 | i->nid = nid; |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1873 | i->state = FREE_NID; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1874 | |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1875 | radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 1876 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1877 | spin_lock(&nm_i->nid_list_lock); |
| 1878 | |
| 1879 | if (build) { |
| 1880 | /* |
| 1881 | * Thread A Thread B |
| 1882 | * - f2fs_create |
| 1883 | * - f2fs_new_inode |
| 1884 | * - alloc_nid |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1885 | * - __insert_nid_to_list(PREALLOC_NID) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1886 | * - f2fs_balance_fs_bg |
| 1887 | * - build_free_nids |
| 1888 | * - __build_free_nids |
| 1889 | * - scan_nat_page |
| 1890 | * - add_free_nid |
| 1891 | * - __lookup_nat_cache |
| 1892 | * - f2fs_add_link |
| 1893 | * - init_inode_metadata |
| 1894 | * - new_inode_page |
| 1895 | * - new_node_page |
| 1896 | * - set_node_addr |
| 1897 | * - alloc_nid_done |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1898 | * - __remove_nid_from_list(PREALLOC_NID) |
| 1899 | * - __insert_nid_to_list(FREE_NID) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1900 | */ |
| 1901 | ne = __lookup_nat_cache(nm_i, nid); |
| 1902 | if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || |
| 1903 | nat_get_blkaddr(ne) != NULL_ADDR)) |
| 1904 | goto err_out; |
| 1905 | |
| 1906 | e = __lookup_free_nid_list(nm_i, nid); |
| 1907 | if (e) { |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1908 | if (e->state == FREE_NID) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1909 | ret = true; |
| 1910 | goto err_out; |
| 1911 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1912 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1913 | ret = true; |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 1914 | err = __insert_free_nid(sbi, i, FREE_NID); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1915 | err_out: |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1916 | if (update) { |
| 1917 | update_free_nid_bitmap(sbi, nid, ret, build); |
| 1918 | if (!build) |
| 1919 | nm_i->available_nids++; |
| 1920 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1921 | spin_unlock(&nm_i->nid_list_lock); |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 1922 | radix_tree_preload_end(); |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1923 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1924 | if (err) |
| 1925 | kmem_cache_free(free_nid_slab, i); |
| 1926 | return ret; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1927 | } |
| 1928 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1929 | static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1930 | { |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1931 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1932 | struct free_nid *i; |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 1933 | bool need_free = false; |
| 1934 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1935 | spin_lock(&nm_i->nid_list_lock); |
Jaegeuk Kim | 8a7ed66 | 2014-02-21 14:29:35 +0900 | [diff] [blame] | 1936 | i = __lookup_free_nid_list(nm_i, nid); |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1937 | if (i && i->state == FREE_NID) { |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 1938 | __remove_free_nid(sbi, i, FREE_NID); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 1939 | need_free = true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1940 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1941 | spin_unlock(&nm_i->nid_list_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 1942 | |
| 1943 | if (need_free) |
| 1944 | kmem_cache_free(free_nid_slab, i); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1945 | } |
| 1946 | |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 1947 | static void scan_nat_page(struct f2fs_sb_info *sbi, |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1948 | struct page *nat_page, nid_t start_nid) |
| 1949 | { |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 1950 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1951 | struct f2fs_nat_block *nat_blk = page_address(nat_page); |
| 1952 | block_t blk_addr; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1953 | unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1954 | int i; |
| 1955 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1956 | __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); |
| 1957 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1958 | i = start_nid % NAT_ENTRY_PER_BLOCK; |
| 1959 | |
| 1960 | for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 1961 | if (unlikely(start_nid >= nm_i->max_nid)) |
Jaegeuk Kim | 04431c4 | 2013-03-16 08:34:37 +0900 | [diff] [blame] | 1962 | break; |
Haicheng Li | 23d3884 | 2013-05-06 23:15:43 +0800 | [diff] [blame] | 1963 | |
| 1964 | blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 1965 | f2fs_bug_on(sbi, blk_addr == NEW_ADDR); |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1966 | if (blk_addr == NULL_ADDR) { |
| 1967 | add_free_nid(sbi, start_nid, true, true); |
| 1968 | } else { |
| 1969 | spin_lock(&NM_I(sbi)->nid_list_lock); |
| 1970 | update_free_nid_bitmap(sbi, start_nid, false, true); |
| 1971 | spin_unlock(&NM_I(sbi)->nid_list_lock); |
| 1972 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1973 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1974 | } |
| 1975 | |
Chao Yu | b561061 | 2017-11-08 17:47:36 +0800 | [diff] [blame] | 1976 | static void scan_curseg_cache(struct f2fs_sb_info *sbi) |
| 1977 | { |
| 1978 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); |
| 1979 | struct f2fs_journal *journal = curseg->journal; |
| 1980 | int i; |
| 1981 | |
| 1982 | down_read(&curseg->journal_rwsem); |
| 1983 | for (i = 0; i < nats_in_cursum(journal); i++) { |
| 1984 | block_t addr; |
| 1985 | nid_t nid; |
| 1986 | |
| 1987 | addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); |
| 1988 | nid = le32_to_cpu(nid_in_journal(journal, i)); |
| 1989 | if (addr == NULL_ADDR) |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1990 | add_free_nid(sbi, nid, true, false); |
Chao Yu | b561061 | 2017-11-08 17:47:36 +0800 | [diff] [blame] | 1991 | else |
| 1992 | remove_free_nid(sbi, nid); |
| 1993 | } |
| 1994 | up_read(&curseg->journal_rwsem); |
| 1995 | } |
| 1996 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1997 | static void scan_free_nid_bits(struct f2fs_sb_info *sbi) |
| 1998 | { |
| 1999 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2000 | unsigned int i, idx; |
Fan Li | 5772e0c | 2017-11-07 19:14:24 +0800 | [diff] [blame] | 2001 | nid_t nid; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2002 | |
| 2003 | down_read(&nm_i->nat_tree_lock); |
| 2004 | |
| 2005 | for (i = 0; i < nm_i->nat_blocks; i++) { |
| 2006 | if (!test_bit_le(i, nm_i->nat_block_bitmap)) |
| 2007 | continue; |
| 2008 | if (!nm_i->free_nid_count[i]) |
| 2009 | continue; |
| 2010 | for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { |
Fan Li | 5772e0c | 2017-11-07 19:14:24 +0800 | [diff] [blame] | 2011 | idx = find_next_bit_le(nm_i->free_nid_bitmap[i], |
| 2012 | NAT_ENTRY_PER_BLOCK, idx); |
| 2013 | if (idx >= NAT_ENTRY_PER_BLOCK) |
| 2014 | break; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2015 | |
| 2016 | nid = i * NAT_ENTRY_PER_BLOCK + idx; |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 2017 | add_free_nid(sbi, nid, true, false); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2018 | |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2019 | if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2020 | goto out; |
| 2021 | } |
| 2022 | } |
| 2023 | out: |
Chao Yu | b561061 | 2017-11-08 17:47:36 +0800 | [diff] [blame] | 2024 | scan_curseg_cache(sbi); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2025 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2026 | up_read(&nm_i->nat_tree_lock); |
| 2027 | } |
| 2028 | |
| 2029 | static void __build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2030 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2031 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Haicheng Li | 8760952 | 2013-05-06 23:15:42 +0800 | [diff] [blame] | 2032 | int i = 0; |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2033 | nid_t nid = nm_i->next_scan_nid; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2034 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2035 | if (unlikely(nid >= nm_i->max_nid)) |
| 2036 | nid = 0; |
| 2037 | |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2038 | /* Enough entries */ |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2039 | if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2040 | return; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2041 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2042 | if (!sync && !available_free_memory(sbi, FREE_NIDS)) |
| 2043 | return; |
| 2044 | |
| 2045 | if (!mount) { |
| 2046 | /* try to find free nids in free_nid_bitmap */ |
| 2047 | scan_free_nid_bits(sbi); |
| 2048 | |
Fan Li | a51e85e | 2017-11-07 11:04:33 +0800 | [diff] [blame] | 2049 | if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2050 | return; |
| 2051 | } |
| 2052 | |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2053 | /* readahead nat pages to be scanned */ |
Chao Yu | 26879fb | 2015-10-12 17:05:59 +0800 | [diff] [blame] | 2054 | ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, |
| 2055 | META_NAT, true); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2056 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2057 | down_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | a513119 | 2016-01-02 09:19:41 -0800 | [diff] [blame] | 2058 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2059 | while (1) { |
Yunlei He | 923df75 | 2017-11-17 16:13:38 +0800 | [diff] [blame] | 2060 | if (!test_bit_le(NAT_BLOCK_OFFSET(nid), |
| 2061 | nm_i->nat_block_bitmap)) { |
| 2062 | struct page *page = get_current_nat_page(sbi, nid); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2063 | |
Yunlei He | 923df75 | 2017-11-17 16:13:38 +0800 | [diff] [blame] | 2064 | scan_nat_page(sbi, page, nid); |
| 2065 | f2fs_put_page(page, 1); |
| 2066 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2067 | |
| 2068 | nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 2069 | if (unlikely(nid >= nm_i->max_nid)) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2070 | nid = 0; |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2071 | |
Chao Yu | a6d494b | 2015-07-24 18:26:26 +0800 | [diff] [blame] | 2072 | if (++i >= FREE_NID_PAGES) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2073 | break; |
| 2074 | } |
| 2075 | |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2076 | /* go to the next free nat pages to find free nids abundantly */ |
| 2077 | nm_i->next_scan_nid = nid; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2078 | |
| 2079 | /* find free nids from current sum_pages */ |
Chao Yu | b561061 | 2017-11-08 17:47:36 +0800 | [diff] [blame] | 2080 | scan_curseg_cache(sbi); |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2081 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2082 | up_read(&nm_i->nat_tree_lock); |
Chao Yu | 2db2388 | 2015-10-12 17:07:33 +0800 | [diff] [blame] | 2083 | |
| 2084 | ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), |
Chao Yu | ea1a29a0 | 2015-10-12 17:08:48 +0800 | [diff] [blame] | 2085 | nm_i->ra_nid_pages, META_NAT, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2086 | } |
| 2087 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2088 | void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) |
| 2089 | { |
| 2090 | mutex_lock(&NM_I(sbi)->build_lock); |
| 2091 | __build_free_nids(sbi, sync, mount); |
| 2092 | mutex_unlock(&NM_I(sbi)->build_lock); |
| 2093 | } |
| 2094 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2095 | /* |
| 2096 | * If this function returns success, caller can obtain a new nid |
| 2097 | * from second parameter of this function. |
| 2098 | * The returned nid could be used ino as well as nid when inode is created. |
| 2099 | */ |
| 2100 | bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) |
| 2101 | { |
| 2102 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2103 | struct free_nid *i = NULL; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2104 | retry: |
Jaegeuk Kim | cb78942 | 2016-04-29 16:29:22 -0700 | [diff] [blame] | 2105 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2106 | if (time_to_inject(sbi, FAULT_ALLOC_NID)) { |
| 2107 | f2fs_show_injection_info(FAULT_ALLOC_NID); |
Jaegeuk Kim | cb78942 | 2016-04-29 16:29:22 -0700 | [diff] [blame] | 2108 | return false; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2109 | } |
Jaegeuk Kim | cb78942 | 2016-04-29 16:29:22 -0700 | [diff] [blame] | 2110 | #endif |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2111 | spin_lock(&nm_i->nid_list_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2112 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2113 | if (unlikely(nm_i->available_nids == 0)) { |
| 2114 | spin_unlock(&nm_i->nid_list_lock); |
| 2115 | return false; |
| 2116 | } |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2117 | |
| 2118 | /* We should not use stale free nids created by build_free_nids */ |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2119 | if (nm_i->nid_cnt[FREE_NID] && !on_build_free_nids(nm_i)) { |
| 2120 | f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); |
| 2121 | i = list_first_entry(&nm_i->free_nid_list, |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2122 | struct free_nid, list); |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2123 | *nid = i->nid; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2124 | |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 2125 | __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2126 | nm_i->available_nids--; |
| 2127 | |
| 2128 | update_free_nid_bitmap(sbi, *nid, false, false); |
| 2129 | |
| 2130 | spin_unlock(&nm_i->nid_list_lock); |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2131 | return true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2132 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2133 | spin_unlock(&nm_i->nid_list_lock); |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2134 | |
| 2135 | /* Let's scan nat pages and its caches to get free nids */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2136 | build_free_nids(sbi, true, false); |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2137 | goto retry; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2138 | } |
| 2139 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 2140 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2141 | * alloc_nid() should be called prior to this function. |
| 2142 | */ |
| 2143 | void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) |
| 2144 | { |
| 2145 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2146 | struct free_nid *i; |
| 2147 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2148 | spin_lock(&nm_i->nid_list_lock); |
Jaegeuk Kim | 8a7ed66 | 2014-02-21 14:29:35 +0900 | [diff] [blame] | 2149 | i = __lookup_free_nid_list(nm_i, nid); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2150 | f2fs_bug_on(sbi, !i); |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 2151 | __remove_free_nid(sbi, i, PREALLOC_NID); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2152 | spin_unlock(&nm_i->nid_list_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 2153 | |
| 2154 | kmem_cache_free(free_nid_slab, i); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2155 | } |
| 2156 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 2157 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2158 | * alloc_nid() should be called prior to this function. |
| 2159 | */ |
| 2160 | void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) |
| 2161 | { |
Jaegeuk Kim | 49952fa | 2013-04-03 22:19:03 +0900 | [diff] [blame] | 2162 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2163 | struct free_nid *i; |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 2164 | bool need_free = false; |
Jaegeuk Kim | 49952fa | 2013-04-03 22:19:03 +0900 | [diff] [blame] | 2165 | |
Jaegeuk Kim | 65985d9 | 2013-08-14 21:57:27 +0900 | [diff] [blame] | 2166 | if (!nid) |
| 2167 | return; |
| 2168 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2169 | spin_lock(&nm_i->nid_list_lock); |
Jaegeuk Kim | 8a7ed66 | 2014-02-21 14:29:35 +0900 | [diff] [blame] | 2170 | i = __lookup_free_nid_list(nm_i, nid); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2171 | f2fs_bug_on(sbi, !i); |
| 2172 | |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 2173 | if (!available_free_memory(sbi, FREE_NIDS)) { |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 2174 | __remove_free_nid(sbi, i, PREALLOC_NID); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 2175 | need_free = true; |
Haicheng Li | 95630cb | 2013-05-06 23:15:41 +0800 | [diff] [blame] | 2176 | } else { |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 2177 | __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); |
Haicheng Li | 95630cb | 2013-05-06 23:15:41 +0800 | [diff] [blame] | 2178 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2179 | |
| 2180 | nm_i->available_nids++; |
| 2181 | |
| 2182 | update_free_nid_bitmap(sbi, nid, true, false); |
| 2183 | |
| 2184 | spin_unlock(&nm_i->nid_list_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 2185 | |
| 2186 | if (need_free) |
| 2187 | kmem_cache_free(free_nid_slab, i); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2188 | } |
| 2189 | |
Chao Yu | 3169658 | 2015-07-28 18:33:46 +0800 | [diff] [blame] | 2190 | int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) |
| 2191 | { |
| 2192 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2193 | struct free_nid *i, *next; |
| 2194 | int nr = nr_shrink; |
| 2195 | |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2196 | if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) |
Jaegeuk Kim | ad4edb8 | 2016-06-16 16:41:49 -0700 | [diff] [blame] | 2197 | return 0; |
| 2198 | |
Chao Yu | 3169658 | 2015-07-28 18:33:46 +0800 | [diff] [blame] | 2199 | if (!mutex_trylock(&nm_i->build_lock)) |
| 2200 | return 0; |
| 2201 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2202 | spin_lock(&nm_i->nid_list_lock); |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2203 | list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2204 | if (nr_shrink <= 0 || |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2205 | nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) |
Chao Yu | 3169658 | 2015-07-28 18:33:46 +0800 | [diff] [blame] | 2206 | break; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2207 | |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 2208 | __remove_free_nid(sbi, i, FREE_NID); |
Chao Yu | 3169658 | 2015-07-28 18:33:46 +0800 | [diff] [blame] | 2209 | kmem_cache_free(free_nid_slab, i); |
| 2210 | nr_shrink--; |
Chao Yu | 3169658 | 2015-07-28 18:33:46 +0800 | [diff] [blame] | 2211 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2212 | spin_unlock(&nm_i->nid_list_lock); |
Chao Yu | 3169658 | 2015-07-28 18:33:46 +0800 | [diff] [blame] | 2213 | mutex_unlock(&nm_i->build_lock); |
| 2214 | |
| 2215 | return nr - nr_shrink; |
| 2216 | } |
| 2217 | |
Chao Yu | 70cfed8 | 2014-08-02 15:26:04 +0800 | [diff] [blame] | 2218 | void recover_inline_xattr(struct inode *inode, struct page *page) |
Chao Yu | 28cdce0 | 2014-03-11 13:37:38 +0800 | [diff] [blame] | 2219 | { |
Chao Yu | 28cdce0 | 2014-03-11 13:37:38 +0800 | [diff] [blame] | 2220 | void *src_addr, *dst_addr; |
| 2221 | size_t inline_size; |
| 2222 | struct page *ipage; |
| 2223 | struct f2fs_inode *ri; |
| 2224 | |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 2225 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 2226 | f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); |
Chao Yu | 28cdce0 | 2014-03-11 13:37:38 +0800 | [diff] [blame] | 2227 | |
Jaegeuk Kim | e3b4d43 | 2014-08-07 23:45:42 -0700 | [diff] [blame] | 2228 | ri = F2FS_INODE(page); |
Yunlei He | 4f76d6a | 2018-01-03 18:03:04 +0800 | [diff] [blame] | 2229 | if (ri->i_inline & F2FS_INLINE_XATTR) { |
| 2230 | set_inode_flag(inode, FI_INLINE_XATTR); |
| 2231 | } else { |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 2232 | clear_inode_flag(inode, FI_INLINE_XATTR); |
Jaegeuk Kim | e3b4d43 | 2014-08-07 23:45:42 -0700 | [diff] [blame] | 2233 | goto update_inode; |
| 2234 | } |
| 2235 | |
Chao Yu | 50ffaa9 | 2017-09-06 21:59:50 +0800 | [diff] [blame] | 2236 | dst_addr = inline_xattr_addr(inode, ipage); |
| 2237 | src_addr = inline_xattr_addr(inode, page); |
Chao Yu | 28cdce0 | 2014-03-11 13:37:38 +0800 | [diff] [blame] | 2238 | inline_size = inline_xattr_size(inode); |
| 2239 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 2240 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
Chao Yu | 28cdce0 | 2014-03-11 13:37:38 +0800 | [diff] [blame] | 2241 | memcpy(dst_addr, src_addr, inline_size); |
Jaegeuk Kim | e3b4d43 | 2014-08-07 23:45:42 -0700 | [diff] [blame] | 2242 | update_inode: |
Chao Yu | 28cdce0 | 2014-03-11 13:37:38 +0800 | [diff] [blame] | 2243 | update_inode(inode, ipage); |
| 2244 | f2fs_put_page(ipage, 1); |
| 2245 | } |
| 2246 | |
Sheng Yong | 8933908 | 2017-11-22 18:23:40 +0800 | [diff] [blame] | 2247 | int recover_xattr_data(struct inode *inode, struct page *page) |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2248 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 2249 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2250 | nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; |
Yunlei He | e21d43c | 2017-07-18 09:48:12 +0800 | [diff] [blame] | 2251 | nid_t new_xnid; |
| 2252 | struct dnode_of_data dn; |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2253 | struct node_info ni; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2254 | struct page *xpage; |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2255 | |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2256 | if (!prev_xnid) |
| 2257 | goto recover_xnid; |
| 2258 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2259 | /* 1: invalidate the previous xattr nid */ |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2260 | get_node_info(sbi, prev_xnid, &ni); |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2261 | invalidate_blocks(sbi, ni.blk_addr); |
Chao Yu | d9bfbbb | 2017-07-06 01:11:31 +0800 | [diff] [blame] | 2262 | dec_valid_node_count(sbi, inode, false); |
Jaegeuk Kim | 479f40c | 2014-03-20 21:52:53 +0900 | [diff] [blame] | 2263 | set_node_addr(sbi, &ni, NULL_ADDR, false); |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2264 | |
| 2265 | recover_xnid: |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2266 | /* 2: update xattr nid in inode */ |
Yunlei He | e21d43c | 2017-07-18 09:48:12 +0800 | [diff] [blame] | 2267 | if (!alloc_nid(sbi, &new_xnid)) |
| 2268 | return -ENOSPC; |
| 2269 | |
| 2270 | set_new_dnode(&dn, inode, NULL, NULL, new_xnid); |
| 2271 | xpage = new_node_page(&dn, XATTR_NODE_OFFSET); |
| 2272 | if (IS_ERR(xpage)) { |
| 2273 | alloc_nid_failed(sbi, new_xnid); |
| 2274 | return PTR_ERR(xpage); |
| 2275 | } |
| 2276 | |
| 2277 | alloc_nid_done(sbi, new_xnid); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2278 | update_inode_page(inode); |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2279 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2280 | /* 3: update and set xattr node page dirty */ |
Yunlei He | e21d43c | 2017-07-18 09:48:12 +0800 | [diff] [blame] | 2281 | memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2282 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2283 | set_page_dirty(xpage); |
| 2284 | f2fs_put_page(xpage, 1); |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2285 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2286 | return 0; |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2287 | } |
| 2288 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2289 | int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) |
| 2290 | { |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 2291 | struct f2fs_inode *src, *dst; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2292 | nid_t ino = ino_of_node(page); |
| 2293 | struct node_info old_ni, new_ni; |
| 2294 | struct page *ipage; |
| 2295 | |
Jaegeuk Kim | e8271fa | 2014-04-18 15:21:04 +0900 | [diff] [blame] | 2296 | get_node_info(sbi, ino, &old_ni); |
| 2297 | |
| 2298 | if (unlikely(old_ni.blk_addr != NULL_ADDR)) |
| 2299 | return -EINVAL; |
Jaegeuk Kim | e8ea9b3 | 2016-09-09 16:59:39 -0700 | [diff] [blame] | 2300 | retry: |
Jaegeuk Kim | 300e129 | 2016-04-29 16:11:53 -0700 | [diff] [blame] | 2301 | ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); |
Jaegeuk Kim | e8ea9b3 | 2016-09-09 16:59:39 -0700 | [diff] [blame] | 2302 | if (!ipage) { |
| 2303 | congestion_wait(BLK_RW_ASYNC, HZ/50); |
| 2304 | goto retry; |
| 2305 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2306 | |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 2307 | /* Should not use this inode from free nid list */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2308 | remove_free_nid(sbi, ino); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2309 | |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 2310 | if (!PageUptodate(ipage)) |
| 2311 | SetPageUptodate(ipage); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2312 | fill_node_footer(ipage, ino, ino, 0, true); |
Chao Yu | c7930ee8 | 2018-03-09 14:24:22 +0800 | [diff] [blame] | 2313 | set_cold_node(page, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2314 | |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 2315 | src = F2FS_INODE(page); |
| 2316 | dst = F2FS_INODE(ipage); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2317 | |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 2318 | memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); |
| 2319 | dst->i_size = 0; |
| 2320 | dst->i_blocks = cpu_to_le64(1); |
| 2321 | dst->i_links = cpu_to_le32(1); |
| 2322 | dst->i_xattr_nid = 0; |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame] | 2323 | dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); |
Chao Yu | 5647b30 | 2017-07-26 00:01:41 +0800 | [diff] [blame] | 2324 | if (dst->i_inline & F2FS_EXTRA_ATTR) { |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame] | 2325 | dst->i_extra_isize = src->i_extra_isize; |
Chao Yu | 50ffaa9 | 2017-09-06 21:59:50 +0800 | [diff] [blame] | 2326 | |
| 2327 | if (f2fs_sb_has_flexible_inline_xattr(sbi->sb) && |
| 2328 | F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), |
| 2329 | i_inline_xattr_size)) |
| 2330 | dst->i_inline_xattr_size = src->i_inline_xattr_size; |
| 2331 | |
Chao Yu | 5647b30 | 2017-07-26 00:01:41 +0800 | [diff] [blame] | 2332 | if (f2fs_sb_has_project_quota(sbi->sb) && |
| 2333 | F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), |
| 2334 | i_projid)) |
| 2335 | dst->i_projid = src->i_projid; |
| 2336 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2337 | |
| 2338 | new_ni = old_ni; |
| 2339 | new_ni.ino = ino; |
| 2340 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 2341 | if (unlikely(inc_valid_node_count(sbi, NULL, true))) |
Jaegeuk Kim | 65e5cd0 | 2013-05-14 15:47:43 +0900 | [diff] [blame] | 2342 | WARN_ON(1); |
Jaegeuk Kim | 479f40c | 2014-03-20 21:52:53 +0900 | [diff] [blame] | 2343 | set_node_addr(sbi, &new_ni, NEW_ADDR, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2344 | inc_valid_inode_count(sbi); |
Jaegeuk Kim | 617deb8 | 2014-08-07 17:04:24 -0700 | [diff] [blame] | 2345 | set_page_dirty(ipage); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2346 | f2fs_put_page(ipage, 1); |
| 2347 | return 0; |
| 2348 | } |
| 2349 | |
Yunlei He | c804fcf | 2017-12-06 11:31:29 +0800 | [diff] [blame] | 2350 | void restore_node_summary(struct f2fs_sb_info *sbi, |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2351 | unsigned int segno, struct f2fs_summary_block *sum) |
| 2352 | { |
| 2353 | struct f2fs_node *rn; |
| 2354 | struct f2fs_summary *sum_entry; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2355 | block_t addr; |
Chao Yu | 9ecf4b8 | 2014-12-18 18:29:05 +0800 | [diff] [blame] | 2356 | int i, idx, last_offset, nrpages; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2357 | |
| 2358 | /* scan the node segment */ |
| 2359 | last_offset = sbi->blocks_per_seg; |
| 2360 | addr = START_BLOCK(sbi, segno); |
| 2361 | sum_entry = &sum->entries[0]; |
| 2362 | |
Chao Yu | 9ecf4b8 | 2014-12-18 18:29:05 +0800 | [diff] [blame] | 2363 | for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2364 | nrpages = min(last_offset - i, BIO_MAX_PAGES); |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 2365 | |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 2366 | /* readahead node pages */ |
Chao Yu | 26879fb | 2015-10-12 17:05:59 +0800 | [diff] [blame] | 2367 | ra_meta_pages(sbi, addr, nrpages, META_POR, true); |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 2368 | |
Chao Yu | 9ecf4b8 | 2014-12-18 18:29:05 +0800 | [diff] [blame] | 2369 | for (idx = addr; idx < addr + nrpages; idx++) { |
Chao Yu | 2b94700 | 2015-10-12 17:04:21 +0800 | [diff] [blame] | 2370 | struct page *page = get_tmp_page(sbi, idx); |
Chao Yu | 9af0ff1 | 2013-11-22 15:48:54 +0800 | [diff] [blame] | 2371 | |
Chao Yu | 9ecf4b8 | 2014-12-18 18:29:05 +0800 | [diff] [blame] | 2372 | rn = F2FS_NODE(page); |
| 2373 | sum_entry->nid = rn->footer.nid; |
| 2374 | sum_entry->version = 0; |
| 2375 | sum_entry->ofs_in_node = 0; |
| 2376 | sum_entry++; |
| 2377 | f2fs_put_page(page, 1); |
Chao Yu | 9af0ff1 | 2013-11-22 15:48:54 +0800 | [diff] [blame] | 2378 | } |
Chao Yu | bac4eef | 2014-05-27 08:41:07 +0800 | [diff] [blame] | 2379 | |
Chao Yu | 9ecf4b8 | 2014-12-18 18:29:05 +0800 | [diff] [blame] | 2380 | invalidate_mapping_pages(META_MAPPING(sbi), addr, |
Chao Yu | bac4eef | 2014-05-27 08:41:07 +0800 | [diff] [blame] | 2381 | addr + nrpages); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2382 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2383 | } |
| 2384 | |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2385 | static void remove_nats_in_journal(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2386 | { |
| 2387 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2388 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2389 | struct f2fs_journal *journal = curseg->journal; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2390 | int i; |
| 2391 | |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2392 | down_write(&curseg->journal_rwsem); |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2393 | for (i = 0; i < nats_in_cursum(journal); i++) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2394 | struct nat_entry *ne; |
| 2395 | struct f2fs_nat_entry raw_ne; |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2396 | nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2397 | |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2398 | raw_ne = nat_in_journal(journal, i); |
Jaegeuk Kim | 9be32d7 | 2014-12-05 10:39:49 -0800 | [diff] [blame] | 2399 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2400 | ne = __lookup_nat_cache(nm_i, nid); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2401 | if (!ne) { |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 2402 | ne = __alloc_nat_entry(nid, true); |
| 2403 | __init_nat_entry(nm_i, ne, &raw_ne, true); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2404 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2405 | |
| 2406 | /* |
| 2407 | * if a free nat in journal has not been used after last |
| 2408 | * checkpoint, we should remove it from available nids, |
| 2409 | * since later we will add it again. |
| 2410 | */ |
| 2411 | if (!get_nat_flag(ne, IS_DIRTY) && |
| 2412 | le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { |
| 2413 | spin_lock(&nm_i->nid_list_lock); |
| 2414 | nm_i->available_nids--; |
| 2415 | spin_unlock(&nm_i->nid_list_lock); |
| 2416 | } |
| 2417 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2418 | __set_nat_cache_dirty(nm_i, ne); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2419 | } |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2420 | update_nats_in_cursum(journal, -i); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2421 | up_write(&curseg->journal_rwsem); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2422 | } |
| 2423 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2424 | static void __adjust_nat_entry_set(struct nat_entry_set *nes, |
| 2425 | struct list_head *head, int max) |
| 2426 | { |
| 2427 | struct nat_entry_set *cur; |
| 2428 | |
| 2429 | if (nes->entry_cnt >= max) |
| 2430 | goto add_out; |
| 2431 | |
| 2432 | list_for_each_entry(cur, head, set_list) { |
| 2433 | if (cur->entry_cnt >= nes->entry_cnt) { |
| 2434 | list_add(&nes->set_list, cur->set_list.prev); |
| 2435 | return; |
| 2436 | } |
| 2437 | } |
| 2438 | add_out: |
| 2439 | list_add_tail(&nes->set_list, head); |
| 2440 | } |
| 2441 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2442 | static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, |
| 2443 | struct page *page) |
| 2444 | { |
| 2445 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2446 | unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; |
| 2447 | struct f2fs_nat_block *nat_blk = page_address(page); |
| 2448 | int valid = 0; |
Fan Li | 1033eee | 2017-10-30 15:19:48 +0800 | [diff] [blame] | 2449 | int i = 0; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2450 | |
| 2451 | if (!enabled_nat_bits(sbi, NULL)) |
| 2452 | return; |
| 2453 | |
Fan Li | 1033eee | 2017-10-30 15:19:48 +0800 | [diff] [blame] | 2454 | if (nat_index == 0) { |
| 2455 | valid = 1; |
| 2456 | i = 1; |
| 2457 | } |
| 2458 | for (; i < NAT_ENTRY_PER_BLOCK; i++) { |
| 2459 | if (nat_blk->entries[i].block_addr != NULL_ADDR) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2460 | valid++; |
| 2461 | } |
| 2462 | if (valid == 0) { |
| 2463 | __set_bit_le(nat_index, nm_i->empty_nat_bits); |
| 2464 | __clear_bit_le(nat_index, nm_i->full_nat_bits); |
| 2465 | return; |
| 2466 | } |
| 2467 | |
| 2468 | __clear_bit_le(nat_index, nm_i->empty_nat_bits); |
| 2469 | if (valid == NAT_ENTRY_PER_BLOCK) |
| 2470 | __set_bit_le(nat_index, nm_i->full_nat_bits); |
| 2471 | else |
| 2472 | __clear_bit_le(nat_index, nm_i->full_nat_bits); |
| 2473 | } |
| 2474 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2475 | static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2476 | struct nat_entry_set *set, struct cp_control *cpc) |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2477 | { |
| 2478 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2479 | struct f2fs_journal *journal = curseg->journal; |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2480 | nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; |
| 2481 | bool to_journal = true; |
| 2482 | struct f2fs_nat_block *nat_blk; |
| 2483 | struct nat_entry *ne, *cur; |
| 2484 | struct page *page = NULL; |
| 2485 | |
| 2486 | /* |
| 2487 | * there are two steps to flush nat entries: |
| 2488 | * #1, flush nat entries to journal in current hot data summary block. |
| 2489 | * #2, flush nat entries to nat page. |
| 2490 | */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2491 | if (enabled_nat_bits(sbi, cpc) || |
| 2492 | !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2493 | to_journal = false; |
| 2494 | |
| 2495 | if (to_journal) { |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2496 | down_write(&curseg->journal_rwsem); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2497 | } else { |
| 2498 | page = get_next_nat_page(sbi, start_nid); |
| 2499 | nat_blk = page_address(page); |
| 2500 | f2fs_bug_on(sbi, !nat_blk); |
| 2501 | } |
| 2502 | |
| 2503 | /* flush dirty nats in nat entry set */ |
| 2504 | list_for_each_entry_safe(ne, cur, &set->entry_list, list) { |
| 2505 | struct f2fs_nat_entry *raw_ne; |
| 2506 | nid_t nid = nat_get_nid(ne); |
| 2507 | int offset; |
| 2508 | |
Chao Yu | 86aadea | 2017-06-05 18:29:08 +0800 | [diff] [blame] | 2509 | f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2510 | |
| 2511 | if (to_journal) { |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2512 | offset = lookup_journal_in_cursum(journal, |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2513 | NAT_JOURNAL, nid, 1); |
| 2514 | f2fs_bug_on(sbi, offset < 0); |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2515 | raw_ne = &nat_in_journal(journal, offset); |
| 2516 | nid_in_journal(journal, offset) = cpu_to_le32(nid); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2517 | } else { |
| 2518 | raw_ne = &nat_blk->entries[nid - start_nid]; |
| 2519 | } |
| 2520 | raw_nat_from_node_info(raw_ne, &ne->ni); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2521 | nat_reset_flag(ne); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2522 | __clear_nat_cache_dirty(NM_I(sbi), set, ne); |
| 2523 | if (nat_get_blkaddr(ne) == NULL_ADDR) { |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 2524 | add_free_nid(sbi, nid, false, true); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2525 | } else { |
| 2526 | spin_lock(&NM_I(sbi)->nid_list_lock); |
| 2527 | update_free_nid_bitmap(sbi, nid, false, false); |
| 2528 | spin_unlock(&NM_I(sbi)->nid_list_lock); |
| 2529 | } |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2530 | } |
| 2531 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2532 | if (to_journal) { |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2533 | up_write(&curseg->journal_rwsem); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2534 | } else { |
| 2535 | __update_nat_bits(sbi, start_nid, page); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2536 | f2fs_put_page(page, 1); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2537 | } |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2538 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2539 | /* Allow dirty nats by node block allocation in write_begin */ |
| 2540 | if (!set->entry_cnt) { |
| 2541 | radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); |
| 2542 | kmem_cache_free(nat_entry_set_slab, set); |
| 2543 | } |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2544 | } |
| 2545 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 2546 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2547 | * This function is called during the checkpointing process. |
| 2548 | */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2549 | void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2550 | { |
| 2551 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2552 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2553 | struct f2fs_journal *journal = curseg->journal; |
Jaegeuk Kim | 7aed0d4 | 2015-01-07 10:47:57 -0800 | [diff] [blame] | 2554 | struct nat_entry_set *setvec[SETVEC_SIZE]; |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2555 | struct nat_entry_set *set, *tmp; |
| 2556 | unsigned int found; |
| 2557 | nid_t set_idx = 0; |
| 2558 | LIST_HEAD(sets); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2559 | |
Changman Lee | 20d047c | 2014-11-25 12:44:23 +0900 | [diff] [blame] | 2560 | if (!nm_i->dirty_nat_cnt) |
| 2561 | return; |
Jaegeuk Kim | a513119 | 2016-01-02 09:19:41 -0800 | [diff] [blame] | 2562 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2563 | down_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | a513119 | 2016-01-02 09:19:41 -0800 | [diff] [blame] | 2564 | |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2565 | /* |
| 2566 | * if there are no enough space in journal to store dirty nat |
| 2567 | * entries, remove all entries from journal and merge them |
| 2568 | * into nat entry set. |
| 2569 | */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2570 | if (enabled_nat_bits(sbi, cpc) || |
| 2571 | !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2572 | remove_nats_in_journal(sbi); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2573 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2574 | while ((found = __gang_lookup_nat_set(nm_i, |
Jaegeuk Kim | 7aed0d4 | 2015-01-07 10:47:57 -0800 | [diff] [blame] | 2575 | set_idx, SETVEC_SIZE, setvec))) { |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2576 | unsigned idx; |
| 2577 | set_idx = setvec[found - 1]->set + 1; |
| 2578 | for (idx = 0; idx < found; idx++) |
| 2579 | __adjust_nat_entry_set(setvec[idx], &sets, |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2580 | MAX_NAT_JENTRIES(journal)); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2581 | } |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2582 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2583 | /* flush dirty nats in nat entry set */ |
| 2584 | list_for_each_entry_safe(set, tmp, &sets, set_list) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2585 | __flush_nat_entry_set(sbi, set, cpc); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2586 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2587 | up_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2588 | /* Allow dirty nats by node block allocation in write_begin */ |
| 2589 | } |
Jaegeuk Kim | a513119 | 2016-01-02 09:19:41 -0800 | [diff] [blame] | 2590 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2591 | static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) |
| 2592 | { |
| 2593 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| 2594 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2595 | unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; |
| 2596 | unsigned int i; |
| 2597 | __u64 cp_ver = cur_cp_version(ckpt); |
| 2598 | block_t nat_bits_addr; |
| 2599 | |
| 2600 | if (!enabled_nat_bits(sbi, NULL)) |
| 2601 | return 0; |
| 2602 | |
Chao Yu | a33ce03 | 2018-03-20 23:08:29 +0800 | [diff] [blame^] | 2603 | nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); |
Chao Yu | e585ca2 | 2017-11-30 19:28:17 +0800 | [diff] [blame] | 2604 | nm_i->nat_bits = f2fs_kzalloc(sbi, |
| 2605 | nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2606 | if (!nm_i->nat_bits) |
| 2607 | return -ENOMEM; |
| 2608 | |
| 2609 | nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - |
| 2610 | nm_i->nat_bits_blocks; |
| 2611 | for (i = 0; i < nm_i->nat_bits_blocks; i++) { |
| 2612 | struct page *page = get_meta_page(sbi, nat_bits_addr++); |
| 2613 | |
| 2614 | memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), |
| 2615 | page_address(page), F2FS_BLKSIZE); |
| 2616 | f2fs_put_page(page, 1); |
| 2617 | } |
| 2618 | |
| 2619 | cp_ver |= (cur_cp_crc(ckpt) << 32); |
| 2620 | if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { |
| 2621 | disable_nat_bits(sbi, true); |
| 2622 | return 0; |
| 2623 | } |
| 2624 | |
| 2625 | nm_i->full_nat_bits = nm_i->nat_bits + 8; |
| 2626 | nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; |
| 2627 | |
| 2628 | f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); |
| 2629 | return 0; |
| 2630 | } |
| 2631 | |
Hou Pengyang | 61c356c | 2017-05-17 02:48:48 +0000 | [diff] [blame] | 2632 | static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2633 | { |
| 2634 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2635 | unsigned int i = 0; |
| 2636 | nid_t nid, last_nid; |
| 2637 | |
| 2638 | if (!enabled_nat_bits(sbi, NULL)) |
| 2639 | return; |
| 2640 | |
| 2641 | for (i = 0; i < nm_i->nat_blocks; i++) { |
| 2642 | i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); |
| 2643 | if (i >= nm_i->nat_blocks) |
| 2644 | break; |
| 2645 | |
| 2646 | __set_bit_le(i, nm_i->nat_block_bitmap); |
| 2647 | |
| 2648 | nid = i * NAT_ENTRY_PER_BLOCK; |
Fan Li | 51cb399 | 2017-11-02 11:02:52 +0800 | [diff] [blame] | 2649 | last_nid = nid + NAT_ENTRY_PER_BLOCK; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2650 | |
| 2651 | spin_lock(&NM_I(sbi)->nid_list_lock); |
| 2652 | for (; nid < last_nid; nid++) |
| 2653 | update_free_nid_bitmap(sbi, nid, true, true); |
| 2654 | spin_unlock(&NM_I(sbi)->nid_list_lock); |
| 2655 | } |
| 2656 | |
| 2657 | for (i = 0; i < nm_i->nat_blocks; i++) { |
| 2658 | i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); |
| 2659 | if (i >= nm_i->nat_blocks) |
| 2660 | break; |
| 2661 | |
| 2662 | __set_bit_le(i, nm_i->nat_block_bitmap); |
| 2663 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2664 | } |
| 2665 | |
| 2666 | static int init_node_manager(struct f2fs_sb_info *sbi) |
| 2667 | { |
| 2668 | struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); |
| 2669 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2670 | unsigned char *version_bitmap; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2671 | unsigned int nat_segs; |
| 2672 | int err; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2673 | |
| 2674 | nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); |
| 2675 | |
| 2676 | /* segment_count_nat includes pair segment so divide to 2. */ |
| 2677 | nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2678 | nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); |
| 2679 | nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; |
Jaegeuk Kim | 7ee0eea | 2014-04-18 11:14:37 +0900 | [diff] [blame] | 2680 | |
Jaegeuk Kim | b63da15 | 2014-02-17 12:44:20 +0900 | [diff] [blame] | 2681 | /* not used nids: 0, node, meta, (and root counted as valid node) */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2682 | nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - |
Chao Yu | 09234be | 2017-11-16 16:59:14 +0800 | [diff] [blame] | 2683 | sbi->nquota_files - F2FS_RESERVED_NODE_NUM; |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2684 | nm_i->nid_cnt[FREE_NID] = 0; |
| 2685 | nm_i->nid_cnt[PREALLOC_NID] = 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2686 | nm_i->nat_cnt = 0; |
Jaegeuk Kim | cdfc41c | 2014-03-19 13:31:37 +0900 | [diff] [blame] | 2687 | nm_i->ram_thresh = DEF_RAM_THRESHOLD; |
Chao Yu | ea1a29a0 | 2015-10-12 17:08:48 +0800 | [diff] [blame] | 2688 | nm_i->ra_nid_pages = DEF_RA_NID_PAGES; |
Chao Yu | 2304cb0 | 2016-01-18 18:32:58 +0800 | [diff] [blame] | 2689 | nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2690 | |
Jaegeuk Kim | 8a7ed66 | 2014-02-21 14:29:35 +0900 | [diff] [blame] | 2691 | INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2692 | INIT_LIST_HEAD(&nm_i->free_nid_list); |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 2693 | INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); |
| 2694 | INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2695 | INIT_LIST_HEAD(&nm_i->nat_entries); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2696 | |
| 2697 | mutex_init(&nm_i->build_lock); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2698 | spin_lock_init(&nm_i->nid_list_lock); |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2699 | init_rwsem(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2700 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2701 | nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); |
Alexandru Gheorghiu | 79b5793 | 2013-03-28 02:24:53 +0200 | [diff] [blame] | 2702 | nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2703 | version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); |
| 2704 | if (!version_bitmap) |
| 2705 | return -EFAULT; |
| 2706 | |
Alexandru Gheorghiu | 79b5793 | 2013-03-28 02:24:53 +0200 | [diff] [blame] | 2707 | nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, |
| 2708 | GFP_KERNEL); |
| 2709 | if (!nm_i->nat_bitmap) |
| 2710 | return -ENOMEM; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2711 | |
| 2712 | err = __get_nat_bitmaps(sbi); |
| 2713 | if (err) |
| 2714 | return err; |
| 2715 | |
| 2716 | #ifdef CONFIG_F2FS_CHECK_FS |
| 2717 | nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, |
| 2718 | GFP_KERNEL); |
| 2719 | if (!nm_i->nat_bitmap_mir) |
| 2720 | return -ENOMEM; |
| 2721 | #endif |
| 2722 | |
| 2723 | return 0; |
| 2724 | } |
| 2725 | |
| 2726 | static int init_free_nid_cache(struct f2fs_sb_info *sbi) |
| 2727 | { |
| 2728 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Jaegeuk Kim | 9f1896c | 2018-03-09 17:42:28 -0800 | [diff] [blame] | 2729 | int i; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2730 | |
Jaegeuk Kim | 9f1896c | 2018-03-09 17:42:28 -0800 | [diff] [blame] | 2731 | nm_i->free_nid_bitmap = f2fs_kzalloc(sbi, nm_i->nat_blocks * |
| 2732 | sizeof(unsigned char *), GFP_KERNEL); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2733 | if (!nm_i->free_nid_bitmap) |
| 2734 | return -ENOMEM; |
| 2735 | |
Jaegeuk Kim | 9f1896c | 2018-03-09 17:42:28 -0800 | [diff] [blame] | 2736 | for (i = 0; i < nm_i->nat_blocks; i++) { |
| 2737 | nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, |
| 2738 | NAT_ENTRY_BITMAP_SIZE_ALIGNED, GFP_KERNEL); |
| 2739 | if (!nm_i->free_nid_bitmap) |
| 2740 | return -ENOMEM; |
| 2741 | } |
| 2742 | |
Chao Yu | ead5259 | 2017-11-30 19:28:18 +0800 | [diff] [blame] | 2743 | nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2744 | GFP_KERNEL); |
| 2745 | if (!nm_i->nat_block_bitmap) |
| 2746 | return -ENOMEM; |
| 2747 | |
Chao Yu | ead5259 | 2017-11-30 19:28:18 +0800 | [diff] [blame] | 2748 | nm_i->free_nid_count = f2fs_kvzalloc(sbi, nm_i->nat_blocks * |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2749 | sizeof(unsigned short), GFP_KERNEL); |
| 2750 | if (!nm_i->free_nid_count) |
| 2751 | return -ENOMEM; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2752 | return 0; |
| 2753 | } |
| 2754 | |
| 2755 | int build_node_manager(struct f2fs_sb_info *sbi) |
| 2756 | { |
| 2757 | int err; |
| 2758 | |
Chao Yu | e585ca2 | 2017-11-30 19:28:17 +0800 | [diff] [blame] | 2759 | sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), |
| 2760 | GFP_KERNEL); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2761 | if (!sbi->nm_info) |
| 2762 | return -ENOMEM; |
| 2763 | |
| 2764 | err = init_node_manager(sbi); |
| 2765 | if (err) |
| 2766 | return err; |
| 2767 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2768 | err = init_free_nid_cache(sbi); |
| 2769 | if (err) |
| 2770 | return err; |
| 2771 | |
| 2772 | /* load free nid status from nat_bits table */ |
| 2773 | load_free_nid_bitmap(sbi); |
| 2774 | |
| 2775 | build_free_nids(sbi, true, true); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2776 | return 0; |
| 2777 | } |
| 2778 | |
| 2779 | void destroy_node_manager(struct f2fs_sb_info *sbi) |
| 2780 | { |
| 2781 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2782 | struct free_nid *i, *next_i; |
| 2783 | struct nat_entry *natvec[NATVEC_SIZE]; |
Jaegeuk Kim | 7aed0d4 | 2015-01-07 10:47:57 -0800 | [diff] [blame] | 2784 | struct nat_entry_set *setvec[SETVEC_SIZE]; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2785 | nid_t nid = 0; |
| 2786 | unsigned int found; |
| 2787 | |
| 2788 | if (!nm_i) |
| 2789 | return; |
| 2790 | |
| 2791 | /* destroy free nid list */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2792 | spin_lock(&nm_i->nid_list_lock); |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2793 | list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 2794 | __remove_free_nid(sbi, i, FREE_NID); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2795 | spin_unlock(&nm_i->nid_list_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 2796 | kmem_cache_free(free_nid_slab, i); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2797 | spin_lock(&nm_i->nid_list_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2798 | } |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2799 | f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); |
| 2800 | f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); |
| 2801 | f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2802 | spin_unlock(&nm_i->nid_list_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2803 | |
| 2804 | /* destroy nat cache */ |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2805 | down_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2806 | while ((found = __gang_lookup_nat_cache(nm_i, |
| 2807 | nid, NATVEC_SIZE, natvec))) { |
| 2808 | unsigned idx; |
Jaegeuk Kim | 7aed0d4 | 2015-01-07 10:47:57 -0800 | [diff] [blame] | 2809 | |
Gu Zheng | b6ce391 | 2014-03-07 18:43:24 +0800 | [diff] [blame] | 2810 | nid = nat_get_nid(natvec[found - 1]) + 1; |
| 2811 | for (idx = 0; idx < found; idx++) |
| 2812 | __del_from_nat_cache(nm_i, natvec[idx]); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2813 | } |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 2814 | f2fs_bug_on(sbi, nm_i->nat_cnt); |
Jaegeuk Kim | 7aed0d4 | 2015-01-07 10:47:57 -0800 | [diff] [blame] | 2815 | |
| 2816 | /* destroy nat set cache */ |
| 2817 | nid = 0; |
| 2818 | while ((found = __gang_lookup_nat_set(nm_i, |
| 2819 | nid, SETVEC_SIZE, setvec))) { |
| 2820 | unsigned idx; |
| 2821 | |
| 2822 | nid = setvec[found - 1]->set + 1; |
| 2823 | for (idx = 0; idx < found; idx++) { |
| 2824 | /* entry_cnt is not zero, when cp_error was occurred */ |
| 2825 | f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); |
| 2826 | radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); |
| 2827 | kmem_cache_free(nat_entry_set_slab, setvec[idx]); |
| 2828 | } |
| 2829 | } |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2830 | up_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2831 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2832 | kvfree(nm_i->nat_block_bitmap); |
Jaegeuk Kim | 9f1896c | 2018-03-09 17:42:28 -0800 | [diff] [blame] | 2833 | if (nm_i->free_nid_bitmap) { |
| 2834 | int i; |
| 2835 | |
| 2836 | for (i = 0; i < nm_i->nat_blocks; i++) |
| 2837 | kvfree(nm_i->free_nid_bitmap[i]); |
| 2838 | kfree(nm_i->free_nid_bitmap); |
| 2839 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2840 | kvfree(nm_i->free_nid_count); |
| 2841 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2842 | kfree(nm_i->nat_bitmap); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2843 | kfree(nm_i->nat_bits); |
| 2844 | #ifdef CONFIG_F2FS_CHECK_FS |
| 2845 | kfree(nm_i->nat_bitmap_mir); |
| 2846 | #endif |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2847 | sbi->nm_info = NULL; |
| 2848 | kfree(nm_i); |
| 2849 | } |
| 2850 | |
Namjae Jeon | 6e6093a | 2013-01-17 00:08:30 +0900 | [diff] [blame] | 2851 | int __init create_node_manager_caches(void) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2852 | { |
| 2853 | nat_entry_slab = f2fs_kmem_cache_create("nat_entry", |
Gu Zheng | e8512d2 | 2014-03-07 18:43:28 +0800 | [diff] [blame] | 2854 | sizeof(struct nat_entry)); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2855 | if (!nat_entry_slab) |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2856 | goto fail; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2857 | |
| 2858 | free_nid_slab = f2fs_kmem_cache_create("free_nid", |
Gu Zheng | e8512d2 | 2014-03-07 18:43:28 +0800 | [diff] [blame] | 2859 | sizeof(struct free_nid)); |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2860 | if (!free_nid_slab) |
Markus Elfring | ce3e6d2 | 2014-11-24 15:52:00 +0100 | [diff] [blame] | 2861 | goto destroy_nat_entry; |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2862 | |
| 2863 | nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", |
| 2864 | sizeof(struct nat_entry_set)); |
| 2865 | if (!nat_entry_set_slab) |
Markus Elfring | ce3e6d2 | 2014-11-24 15:52:00 +0100 | [diff] [blame] | 2866 | goto destroy_free_nid; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2867 | return 0; |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2868 | |
Markus Elfring | ce3e6d2 | 2014-11-24 15:52:00 +0100 | [diff] [blame] | 2869 | destroy_free_nid: |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2870 | kmem_cache_destroy(free_nid_slab); |
Markus Elfring | ce3e6d2 | 2014-11-24 15:52:00 +0100 | [diff] [blame] | 2871 | destroy_nat_entry: |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2872 | kmem_cache_destroy(nat_entry_slab); |
| 2873 | fail: |
| 2874 | return -ENOMEM; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2875 | } |
| 2876 | |
| 2877 | void destroy_node_manager_caches(void) |
| 2878 | { |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2879 | kmem_cache_destroy(nat_entry_set_slab); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2880 | kmem_cache_destroy(free_nid_slab); |
| 2881 | kmem_cache_destroy(nat_entry_slab); |
| 2882 | } |