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) |
| 146 | new = f2fs_kmem_cache_alloc(nat_entry_slab, |
| 147 | GFP_NOFS | __GFP_ZERO); |
| 148 | else |
| 149 | new = kmem_cache_alloc(nat_entry_slab, |
| 150 | GFP_NOFS | __GFP_ZERO); |
| 151 | if (new) { |
| 152 | nat_set_nid(new, nid); |
| 153 | nat_reset_flag(new); |
| 154 | } |
| 155 | return new; |
| 156 | } |
| 157 | |
| 158 | static void __free_nat_entry(struct nat_entry *e) |
| 159 | { |
| 160 | kmem_cache_free(nat_entry_slab, e); |
| 161 | } |
| 162 | |
| 163 | /* must be locked by nat_tree_lock */ |
| 164 | static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, |
| 165 | struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) |
| 166 | { |
| 167 | if (no_fail) |
| 168 | f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); |
| 169 | else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) |
| 170 | return NULL; |
| 171 | |
| 172 | if (raw_ne) |
| 173 | node_info_from_raw_nat(&ne->ni, raw_ne); |
| 174 | list_add_tail(&ne->list, &nm_i->nat_entries); |
| 175 | nm_i->nat_cnt++; |
| 176 | return ne; |
| 177 | } |
| 178 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 179 | static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) |
| 180 | { |
| 181 | return radix_tree_lookup(&nm_i->nat_root, n); |
| 182 | } |
| 183 | |
| 184 | static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, |
| 185 | nid_t start, unsigned int nr, struct nat_entry **ep) |
| 186 | { |
| 187 | return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); |
| 188 | } |
| 189 | |
| 190 | static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) |
| 191 | { |
| 192 | list_del(&e->list); |
| 193 | radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); |
| 194 | nm_i->nat_cnt--; |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 195 | __free_nat_entry(e); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 196 | } |
| 197 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 198 | static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, |
| 199 | struct nat_entry *ne) |
| 200 | { |
| 201 | nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); |
| 202 | struct nat_entry_set *head; |
| 203 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 204 | head = radix_tree_lookup(&nm_i->nat_set_root, set); |
| 205 | if (!head) { |
Jaegeuk Kim | 80c5450 | 2015-08-20 08:51:56 -0700 | [diff] [blame] | 206 | head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 207 | |
| 208 | INIT_LIST_HEAD(&head->entry_list); |
| 209 | INIT_LIST_HEAD(&head->set_list); |
| 210 | head->set = set; |
| 211 | head->entry_cnt = 0; |
Jaegeuk Kim | 9be32d7 | 2014-12-05 10:39:49 -0800 | [diff] [blame] | 212 | f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 213 | } |
Chao Yu | 86aadea | 2017-06-05 18:29:08 +0800 | [diff] [blame] | 214 | |
| 215 | if (get_nat_flag(ne, IS_DIRTY)) |
| 216 | goto refresh_list; |
| 217 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 218 | nm_i->dirty_nat_cnt++; |
| 219 | head->entry_cnt++; |
| 220 | set_nat_flag(ne, IS_DIRTY, true); |
Chao Yu | 86aadea | 2017-06-05 18:29:08 +0800 | [diff] [blame] | 221 | refresh_list: |
| 222 | if (nat_get_blkaddr(ne) == NEW_ADDR) |
| 223 | list_del_init(&ne->list); |
| 224 | else |
| 225 | list_move_tail(&ne->list, &head->entry_list); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 229 | struct nat_entry_set *set, struct nat_entry *ne) |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 230 | { |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 231 | list_move_tail(&ne->list, &nm_i->nat_entries); |
| 232 | set_nat_flag(ne, IS_DIRTY, false); |
| 233 | set->entry_cnt--; |
| 234 | nm_i->dirty_nat_cnt--; |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 235 | } |
| 236 | |
| 237 | static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, |
| 238 | nid_t start, unsigned int nr, struct nat_entry_set **ep) |
| 239 | { |
| 240 | return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, |
| 241 | start, nr); |
| 242 | } |
| 243 | |
Jaegeuk Kim | 2dcf51a | 2015-04-29 18:31:19 -0700 | [diff] [blame] | 244 | int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) |
| 245 | { |
| 246 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 247 | struct nat_entry *e; |
| 248 | bool need = false; |
| 249 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 250 | down_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | 2dcf51a | 2015-04-29 18:31:19 -0700 | [diff] [blame] | 251 | e = __lookup_nat_cache(nm_i, nid); |
| 252 | if (e) { |
| 253 | if (!get_nat_flag(e, IS_CHECKPOINTED) && |
| 254 | !get_nat_flag(e, HAS_FSYNCED_INODE)) |
| 255 | need = true; |
| 256 | } |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 257 | up_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | 2dcf51a | 2015-04-29 18:31:19 -0700 | [diff] [blame] | 258 | return need; |
| 259 | } |
| 260 | |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 261 | bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 262 | { |
| 263 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 264 | struct nat_entry *e; |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 265 | bool is_cp = true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 266 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 267 | down_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 268 | e = __lookup_nat_cache(nm_i, nid); |
Jaegeuk Kim | 7ef35e3 | 2014-09-15 12:07:13 -0700 | [diff] [blame] | 269 | if (e && !get_nat_flag(e, IS_CHECKPOINTED)) |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 270 | is_cp = false; |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 271 | up_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 272 | return is_cp; |
| 273 | } |
| 274 | |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 275 | 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] | 276 | { |
| 277 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 278 | struct nat_entry *e; |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 279 | bool need_update = true; |
Jaegeuk Kim | b6fe587 | 2014-06-04 00:39:42 +0900 | [diff] [blame] | 280 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 281 | down_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 282 | e = __lookup_nat_cache(nm_i, ino); |
| 283 | if (e && get_nat_flag(e, HAS_LAST_FSYNC) && |
| 284 | (get_nat_flag(e, IS_CHECKPOINTED) || |
| 285 | get_nat_flag(e, HAS_FSYNCED_INODE))) |
| 286 | need_update = false; |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 287 | up_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 288 | return need_update; |
Jaegeuk Kim | b6fe587 | 2014-06-04 00:39:42 +0900 | [diff] [blame] | 289 | } |
| 290 | |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 291 | /* must be locked by nat_tree_lock */ |
Chao Yu | 1515aef | 2016-02-19 18:12:28 +0800 | [diff] [blame] | 292 | 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] | 293 | struct f2fs_nat_entry *ne) |
| 294 | { |
Chao Yu | 1515aef | 2016-02-19 18:12:28 +0800 | [diff] [blame] | 295 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 296 | struct nat_entry *new, *e; |
Jaegeuk Kim | 9be32d7 | 2014-12-05 10:39:49 -0800 | [diff] [blame] | 297 | |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 298 | new = __alloc_nat_entry(nid, false); |
| 299 | if (!new) |
| 300 | return; |
| 301 | |
| 302 | down_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 303 | e = __lookup_nat_cache(nm_i, nid); |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 304 | if (!e) |
| 305 | e = __init_nat_entry(nm_i, new, ne, false); |
| 306 | else |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 307 | f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || |
| 308 | nat_get_blkaddr(e) != |
| 309 | le32_to_cpu(ne->block_addr) || |
Chao Yu | 1515aef | 2016-02-19 18:12:28 +0800 | [diff] [blame] | 310 | nat_get_version(e) != ne->version); |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 311 | up_write(&nm_i->nat_tree_lock); |
| 312 | if (e != new) |
| 313 | __free_nat_entry(new); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | 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] | 317 | block_t new_blkaddr, bool fsync_done) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 318 | { |
| 319 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 320 | struct nat_entry *e; |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 321 | struct nat_entry *new = __alloc_nat_entry(ni->nid, true); |
Jaegeuk Kim | 9be32d7 | 2014-12-05 10:39:49 -0800 | [diff] [blame] | 322 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 323 | down_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 324 | e = __lookup_nat_cache(nm_i, ni->nid); |
| 325 | if (!e) { |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 326 | e = __init_nat_entry(nm_i, new, NULL, true); |
Chao Yu | 5c27f4e | 2014-12-18 17:37:21 +0800 | [diff] [blame] | 327 | copy_node_info(&e->ni, ni); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 328 | f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 329 | } else if (new_blkaddr == NEW_ADDR) { |
| 330 | /* |
| 331 | * when nid is reallocated, |
| 332 | * previous nat entry can be remained in nat cache. |
| 333 | * So, reinitialize it with new information. |
| 334 | */ |
Chao Yu | 5c27f4e | 2014-12-18 17:37:21 +0800 | [diff] [blame] | 335 | copy_node_info(&e->ni, ni); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 336 | f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 337 | } |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 338 | /* let's free early to reduce memory consumption */ |
| 339 | if (e != new) |
| 340 | __free_nat_entry(new); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 341 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 342 | /* sanity check */ |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 343 | f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); |
| 344 | f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 345 | new_blkaddr == NULL_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 | new_blkaddr == NEW_ADDR); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 348 | f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 349 | nat_get_blkaddr(e) != NULL_ADDR && |
| 350 | new_blkaddr == NEW_ADDR); |
| 351 | |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 352 | /* increment version no as node is removed */ |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 353 | if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { |
| 354 | unsigned char version = nat_get_version(e); |
| 355 | nat_set_version(e, inc_node_version(version)); |
| 356 | } |
| 357 | |
| 358 | /* change address */ |
| 359 | nat_set_blkaddr(e, new_blkaddr); |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 360 | if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) |
| 361 | set_nat_flag(e, IS_CHECKPOINTED, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 362 | __set_nat_cache_dirty(nm_i, e); |
Jaegeuk Kim | 479f40c | 2014-03-20 21:52:53 +0900 | [diff] [blame] | 363 | |
| 364 | /* update fsync_mark if its inode nat entry is still alive */ |
Chao Yu | d5b692b | 2015-04-30 18:35:50 +0800 | [diff] [blame] | 365 | if (ni->nid != ni->ino) |
| 366 | e = __lookup_nat_cache(nm_i, ni->ino); |
Jaegeuk Kim | 88bd02c | 2014-09-15 14:50:48 -0700 | [diff] [blame] | 367 | if (e) { |
| 368 | if (fsync_done && ni->nid == ni->ino) |
| 369 | set_nat_flag(e, HAS_FSYNCED_INODE, true); |
| 370 | set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); |
| 371 | } |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 372 | up_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 373 | } |
| 374 | |
Jaegeuk Kim | 4660f9c | 2013-10-24 14:19:18 +0900 | [diff] [blame] | 375 | 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] | 376 | { |
| 377 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Jaegeuk Kim | 1b38dc8 | 2015-06-19 15:36:07 -0700 | [diff] [blame] | 378 | int nr = nr_shrink; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 379 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 380 | if (!down_write_trylock(&nm_i->nat_tree_lock)) |
| 381 | return 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 382 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 383 | while (nr_shrink && !list_empty(&nm_i->nat_entries)) { |
| 384 | struct nat_entry *ne; |
| 385 | ne = list_first_entry(&nm_i->nat_entries, |
| 386 | struct nat_entry, list); |
| 387 | __del_from_nat_cache(nm_i, ne); |
| 388 | nr_shrink--; |
| 389 | } |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 390 | up_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | 1b38dc8 | 2015-06-19 15:36:07 -0700 | [diff] [blame] | 391 | return nr - nr_shrink; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 392 | } |
| 393 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 394 | /* |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 395 | * This function always returns success |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 396 | */ |
| 397 | void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) |
| 398 | { |
| 399 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 400 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 401 | struct f2fs_journal *journal = curseg->journal; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 402 | nid_t start_nid = START_NID(nid); |
| 403 | struct f2fs_nat_block *nat_blk; |
| 404 | struct page *page = NULL; |
| 405 | struct f2fs_nat_entry ne; |
| 406 | struct nat_entry *e; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 407 | pgoff_t index; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 408 | int i; |
| 409 | |
| 410 | ni->nid = nid; |
| 411 | |
| 412 | /* Check nat cache */ |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 413 | down_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 414 | e = __lookup_nat_cache(nm_i, nid); |
| 415 | if (e) { |
| 416 | ni->ino = nat_get_ino(e); |
| 417 | ni->blk_addr = nat_get_blkaddr(e); |
| 418 | ni->version = nat_get_version(e); |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 419 | up_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 420 | return; |
Chao Yu | 1515aef | 2016-02-19 18:12:28 +0800 | [diff] [blame] | 421 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 422 | |
Jaegeuk Kim | 3547ea9 | 2014-12-30 23:08:26 -0800 | [diff] [blame] | 423 | memset(&ne, 0, sizeof(struct f2fs_nat_entry)); |
| 424 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 425 | /* Check current segment summary */ |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 426 | down_read(&curseg->journal_rwsem); |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 427 | i = lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 428 | if (i >= 0) { |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 429 | ne = nat_in_journal(journal, i); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 430 | node_info_from_raw_nat(ni, &ne); |
| 431 | } |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 432 | up_read(&curseg->journal_rwsem); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 433 | if (i >= 0) { |
| 434 | up_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 435 | goto cache; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 436 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 437 | |
| 438 | /* Fill node_info from nat page */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 439 | index = current_nat_addr(sbi, nid); |
| 440 | up_read(&nm_i->nat_tree_lock); |
| 441 | |
| 442 | page = get_meta_page(sbi, index); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 443 | nat_blk = (struct f2fs_nat_block *)page_address(page); |
| 444 | ne = nat_blk->entries[nid - start_nid]; |
| 445 | node_info_from_raw_nat(ni, &ne); |
| 446 | f2fs_put_page(page, 1); |
| 447 | cache: |
| 448 | /* cache nat entry */ |
Chao Yu | 1515aef | 2016-02-19 18:12:28 +0800 | [diff] [blame] | 449 | cache_nat_entry(sbi, nid, &ne); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 450 | } |
| 451 | |
Jaegeuk Kim | 79344ef | 2016-05-06 16:19:43 -0700 | [diff] [blame] | 452 | /* |
| 453 | * readahead MAX_RA_NODE number of node pages. |
| 454 | */ |
| 455 | static void ra_node_pages(struct page *parent, int start, int n) |
| 456 | { |
| 457 | struct f2fs_sb_info *sbi = F2FS_P_SB(parent); |
| 458 | struct blk_plug plug; |
| 459 | int i, end; |
| 460 | nid_t nid; |
| 461 | |
| 462 | blk_start_plug(&plug); |
| 463 | |
| 464 | /* Then, try readahead for siblings of the desired node */ |
| 465 | end = start + n; |
| 466 | end = min(end, NIDS_PER_BLOCK); |
| 467 | for (i = start; i < end; i++) { |
| 468 | nid = get_nid(parent, i, false); |
| 469 | ra_node_page(sbi, nid); |
| 470 | } |
| 471 | |
| 472 | blk_finish_plug(&plug); |
| 473 | } |
| 474 | |
Chao Yu | 3cf4574 | 2016-01-26 15:40:44 +0800 | [diff] [blame] | 475 | pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) |
| 476 | { |
| 477 | const long direct_index = ADDRS_PER_INODE(dn->inode); |
| 478 | const long direct_blks = ADDRS_PER_BLOCK; |
| 479 | const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; |
| 480 | unsigned int skipped_unit = ADDRS_PER_BLOCK; |
| 481 | int cur_level = dn->cur_level; |
| 482 | int max_level = dn->max_level; |
| 483 | pgoff_t base = 0; |
| 484 | |
| 485 | if (!dn->max_level) |
| 486 | return pgofs + 1; |
| 487 | |
| 488 | while (max_level-- > cur_level) |
| 489 | skipped_unit *= NIDS_PER_BLOCK; |
| 490 | |
| 491 | switch (dn->max_level) { |
| 492 | case 3: |
| 493 | base += 2 * indirect_blks; |
| 494 | case 2: |
| 495 | base += 2 * direct_blks; |
| 496 | case 1: |
| 497 | base += direct_index; |
| 498 | break; |
| 499 | default: |
| 500 | f2fs_bug_on(F2FS_I_SB(dn->inode), 1); |
| 501 | } |
| 502 | |
| 503 | return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; |
| 504 | } |
| 505 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 506 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 507 | * The maximum depth is four. |
| 508 | * Offset[0] will have raw inode offset. |
| 509 | */ |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 510 | static int get_node_path(struct inode *inode, long block, |
Jaegeuk Kim | de93653 | 2013-08-12 21:08:03 +0900 | [diff] [blame] | 511 | int offset[4], unsigned int noffset[4]) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 512 | { |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 513 | const long direct_index = ADDRS_PER_INODE(inode); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 514 | const long direct_blks = ADDRS_PER_BLOCK; |
| 515 | const long dptrs_per_blk = NIDS_PER_BLOCK; |
| 516 | const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; |
| 517 | const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; |
| 518 | int n = 0; |
| 519 | int level = 0; |
| 520 | |
| 521 | noffset[0] = 0; |
| 522 | |
| 523 | if (block < direct_index) { |
Namjae Jeon | 25c0a6e | 2013-03-02 12:41:31 +0900 | [diff] [blame] | 524 | offset[n] = block; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 525 | goto got; |
| 526 | } |
| 527 | block -= direct_index; |
| 528 | if (block < direct_blks) { |
| 529 | offset[n++] = NODE_DIR1_BLOCK; |
| 530 | noffset[n] = 1; |
Namjae Jeon | 25c0a6e | 2013-03-02 12:41:31 +0900 | [diff] [blame] | 531 | offset[n] = block; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 532 | level = 1; |
| 533 | goto got; |
| 534 | } |
| 535 | block -= direct_blks; |
| 536 | if (block < direct_blks) { |
| 537 | offset[n++] = NODE_DIR2_BLOCK; |
| 538 | noffset[n] = 2; |
Namjae Jeon | 25c0a6e | 2013-03-02 12:41:31 +0900 | [diff] [blame] | 539 | offset[n] = block; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 540 | level = 1; |
| 541 | goto got; |
| 542 | } |
| 543 | block -= direct_blks; |
| 544 | if (block < indirect_blks) { |
| 545 | offset[n++] = NODE_IND1_BLOCK; |
| 546 | noffset[n] = 3; |
| 547 | offset[n++] = block / direct_blks; |
| 548 | noffset[n] = 4 + offset[n - 1]; |
Namjae Jeon | 25c0a6e | 2013-03-02 12:41:31 +0900 | [diff] [blame] | 549 | offset[n] = block % direct_blks; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 550 | level = 2; |
| 551 | goto got; |
| 552 | } |
| 553 | block -= indirect_blks; |
| 554 | if (block < indirect_blks) { |
| 555 | offset[n++] = NODE_IND2_BLOCK; |
| 556 | noffset[n] = 4 + dptrs_per_blk; |
| 557 | offset[n++] = block / direct_blks; |
| 558 | noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; |
Namjae Jeon | 25c0a6e | 2013-03-02 12:41:31 +0900 | [diff] [blame] | 559 | offset[n] = block % direct_blks; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 560 | level = 2; |
| 561 | goto got; |
| 562 | } |
| 563 | block -= indirect_blks; |
| 564 | if (block < dindirect_blks) { |
| 565 | offset[n++] = NODE_DIND_BLOCK; |
| 566 | noffset[n] = 5 + (dptrs_per_blk * 2); |
| 567 | offset[n++] = block / indirect_blks; |
| 568 | noffset[n] = 6 + (dptrs_per_blk * 2) + |
| 569 | offset[n - 1] * (dptrs_per_blk + 1); |
| 570 | offset[n++] = (block / direct_blks) % dptrs_per_blk; |
| 571 | noffset[n] = 7 + (dptrs_per_blk * 2) + |
| 572 | offset[n - 2] * (dptrs_per_blk + 1) + |
| 573 | offset[n - 1]; |
Namjae Jeon | 25c0a6e | 2013-03-02 12:41:31 +0900 | [diff] [blame] | 574 | offset[n] = block % direct_blks; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 575 | level = 3; |
| 576 | goto got; |
| 577 | } else { |
Jaegeuk Kim | d6f5d63 | 2017-08-21 13:51:32 -0700 | [diff] [blame] | 578 | return -E2BIG; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 579 | } |
| 580 | got: |
| 581 | return level; |
| 582 | } |
| 583 | |
| 584 | /* |
| 585 | * Caller should call f2fs_put_dnode(dn). |
Chao Yu | 4f4124d | 2013-12-21 18:02:14 +0800 | [diff] [blame] | 586 | * Also, it should grab and release a rwsem by calling f2fs_lock_op() and |
| 587 | * f2fs_unlock_op() only if ro is not set RDONLY_NODE. |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 588 | * 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] | 589 | */ |
Jaegeuk Kim | 266e97a | 2013-02-26 13:10:46 +0900 | [diff] [blame] | 590 | 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] | 591 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 592 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 593 | struct page *npage[4]; |
Jaegeuk Kim | f1a3b98 | 2015-02-11 11:25:11 -0800 | [diff] [blame] | 594 | struct page *parent = NULL; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 595 | int offset[4]; |
| 596 | unsigned int noffset[4]; |
| 597 | nid_t nids[4]; |
Chao Yu | 3cf4574 | 2016-01-26 15:40:44 +0800 | [diff] [blame] | 598 | int level, i = 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 599 | int err = 0; |
| 600 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 601 | level = get_node_path(dn->inode, index, offset, noffset); |
Jaegeuk Kim | d6f5d63 | 2017-08-21 13:51:32 -0700 | [diff] [blame] | 602 | if (level < 0) |
| 603 | return level; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 604 | |
| 605 | nids[0] = dn->inode->i_ino; |
Jaegeuk Kim | 1646cfa | 2013-05-20 09:42:28 +0900 | [diff] [blame] | 606 | npage[0] = dn->inode_page; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 607 | |
Jaegeuk Kim | 1646cfa | 2013-05-20 09:42:28 +0900 | [diff] [blame] | 608 | if (!npage[0]) { |
| 609 | npage[0] = get_node_page(sbi, nids[0]); |
| 610 | if (IS_ERR(npage[0])) |
| 611 | return PTR_ERR(npage[0]); |
| 612 | } |
Jaegeuk Kim | f1a3b98 | 2015-02-11 11:25:11 -0800 | [diff] [blame] | 613 | |
| 614 | /* if inline_data is set, should not report any block indices */ |
| 615 | if (f2fs_has_inline_data(dn->inode) && index) { |
Jaegeuk Kim | 7662916 | 2015-03-02 16:28:16 -0800 | [diff] [blame] | 616 | err = -ENOENT; |
Jaegeuk Kim | f1a3b98 | 2015-02-11 11:25:11 -0800 | [diff] [blame] | 617 | f2fs_put_page(npage[0], 1); |
| 618 | goto release_out; |
| 619 | } |
| 620 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 621 | parent = npage[0]; |
Changman Lee | 52c2db3 | 2013-02-20 07:47:06 +0900 | [diff] [blame] | 622 | if (level != 0) |
| 623 | nids[1] = get_nid(parent, offset[0], true); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 624 | dn->inode_page = npage[0]; |
| 625 | dn->inode_page_locked = true; |
| 626 | |
| 627 | /* get indirect or direct nodes */ |
| 628 | for (i = 1; i <= level; i++) { |
| 629 | bool done = false; |
| 630 | |
Jaegeuk Kim | 266e97a | 2013-02-26 13:10:46 +0900 | [diff] [blame] | 631 | if (!nids[i] && mode == ALLOC_NODE) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 632 | /* alloc new node */ |
| 633 | if (!alloc_nid(sbi, &(nids[i]))) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 634 | err = -ENOSPC; |
| 635 | goto release_pages; |
| 636 | } |
| 637 | |
| 638 | dn->nid = nids[i]; |
Yunlei He | 40df136 | 2017-07-17 19:16:11 +0800 | [diff] [blame] | 639 | npage[i] = new_node_page(dn, noffset[i]); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 640 | if (IS_ERR(npage[i])) { |
| 641 | alloc_nid_failed(sbi, nids[i]); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 642 | err = PTR_ERR(npage[i]); |
| 643 | goto release_pages; |
| 644 | } |
| 645 | |
| 646 | set_nid(parent, offset[i - 1], nids[i], i == 1); |
| 647 | alloc_nid_done(sbi, nids[i]); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 648 | done = true; |
Jaegeuk Kim | 266e97a | 2013-02-26 13:10:46 +0900 | [diff] [blame] | 649 | } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 650 | npage[i] = get_node_page_ra(parent, offset[i - 1]); |
| 651 | if (IS_ERR(npage[i])) { |
| 652 | err = PTR_ERR(npage[i]); |
| 653 | goto release_pages; |
| 654 | } |
| 655 | done = true; |
| 656 | } |
| 657 | if (i == 1) { |
| 658 | dn->inode_page_locked = false; |
| 659 | unlock_page(parent); |
| 660 | } else { |
| 661 | f2fs_put_page(parent, 1); |
| 662 | } |
| 663 | |
| 664 | if (!done) { |
| 665 | npage[i] = get_node_page(sbi, nids[i]); |
| 666 | if (IS_ERR(npage[i])) { |
| 667 | err = PTR_ERR(npage[i]); |
| 668 | f2fs_put_page(npage[0], 0); |
| 669 | goto release_out; |
| 670 | } |
| 671 | } |
| 672 | if (i < level) { |
| 673 | parent = npage[i]; |
| 674 | nids[i + 1] = get_nid(parent, offset[i], false); |
| 675 | } |
| 676 | } |
| 677 | dn->nid = nids[level]; |
| 678 | dn->ofs_in_node = offset[level]; |
| 679 | dn->node_page = npage[level]; |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame] | 680 | dn->data_blkaddr = datablock_addr(dn->inode, |
| 681 | dn->node_page, dn->ofs_in_node); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 682 | return 0; |
| 683 | |
| 684 | release_pages: |
| 685 | f2fs_put_page(parent, 1); |
| 686 | if (i > 1) |
| 687 | f2fs_put_page(npage[0], 0); |
| 688 | release_out: |
| 689 | dn->inode_page = NULL; |
| 690 | dn->node_page = NULL; |
Chao Yu | 3cf4574 | 2016-01-26 15:40:44 +0800 | [diff] [blame] | 691 | if (err == -ENOENT) { |
| 692 | dn->cur_level = i; |
| 693 | dn->max_level = level; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 694 | dn->ofs_in_node = offset[level]; |
Chao Yu | 3cf4574 | 2016-01-26 15:40:44 +0800 | [diff] [blame] | 695 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 696 | return err; |
| 697 | } |
| 698 | |
| 699 | static void truncate_node(struct dnode_of_data *dn) |
| 700 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 701 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 702 | struct node_info ni; |
| 703 | |
| 704 | get_node_info(sbi, dn->nid, &ni); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 705 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 706 | /* Deallocate node address */ |
Jaegeuk Kim | 71e9fec | 2012-12-20 15:10:06 +0900 | [diff] [blame] | 707 | invalidate_blocks(sbi, ni.blk_addr); |
Chao Yu | d9bfbbb | 2017-07-06 01:11:31 +0800 | [diff] [blame] | 708 | 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] | 709 | set_node_addr(sbi, &ni, NULL_ADDR, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 710 | |
| 711 | if (dn->nid == dn->inode->i_ino) { |
| 712 | remove_orphan_inode(sbi, dn->nid); |
| 713 | dec_valid_inode_count(sbi); |
Jaegeuk Kim | 0f18b46 | 2016-05-20 11:10:10 -0700 | [diff] [blame] | 714 | f2fs_inode_synced(dn->inode); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 715 | } |
Chao Yu | d9bfbbb | 2017-07-06 01:11:31 +0800 | [diff] [blame] | 716 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 717 | clear_node_page_dirty(dn->node_page); |
Chao Yu | caf0047 | 2015-01-28 17:48:42 +0800 | [diff] [blame] | 718 | set_sbi_flag(sbi, SBI_IS_DIRTY); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 719 | |
| 720 | f2fs_put_page(dn->node_page, 1); |
Jaegeuk Kim | bf39c00 | 2014-01-22 20:41:57 +0900 | [diff] [blame] | 721 | |
| 722 | invalidate_mapping_pages(NODE_MAPPING(sbi), |
| 723 | dn->node_page->index, dn->node_page->index); |
| 724 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 725 | dn->node_page = NULL; |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 726 | trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 727 | } |
| 728 | |
| 729 | static int truncate_dnode(struct dnode_of_data *dn) |
| 730 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 731 | struct page *page; |
| 732 | |
| 733 | if (dn->nid == 0) |
| 734 | return 1; |
| 735 | |
| 736 | /* get direct node */ |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 737 | page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 738 | if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) |
| 739 | return 1; |
| 740 | else if (IS_ERR(page)) |
| 741 | return PTR_ERR(page); |
| 742 | |
| 743 | /* Make dnode_of_data for parameter */ |
| 744 | dn->node_page = page; |
| 745 | dn->ofs_in_node = 0; |
| 746 | truncate_data_blocks(dn); |
| 747 | truncate_node(dn); |
| 748 | return 1; |
| 749 | } |
| 750 | |
| 751 | static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, |
| 752 | int ofs, int depth) |
| 753 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 754 | struct dnode_of_data rdn = *dn; |
| 755 | struct page *page; |
| 756 | struct f2fs_node *rn; |
| 757 | nid_t child_nid; |
| 758 | unsigned int child_nofs; |
| 759 | int freed = 0; |
| 760 | int i, ret; |
| 761 | |
| 762 | if (dn->nid == 0) |
| 763 | return NIDS_PER_BLOCK + 1; |
| 764 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 765 | trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); |
| 766 | |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 767 | page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 768 | if (IS_ERR(page)) { |
| 769 | trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 770 | return PTR_ERR(page); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 771 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 772 | |
Jaegeuk Kim | 79344ef | 2016-05-06 16:19:43 -0700 | [diff] [blame] | 773 | ra_node_pages(page, ofs, NIDS_PER_BLOCK); |
| 774 | |
Gu Zheng | 4559071 | 2013-07-15 17:57:38 +0800 | [diff] [blame] | 775 | rn = F2FS_NODE(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 776 | if (depth < 3) { |
| 777 | for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { |
| 778 | child_nid = le32_to_cpu(rn->in.nid[i]); |
| 779 | if (child_nid == 0) |
| 780 | continue; |
| 781 | rdn.nid = child_nid; |
| 782 | ret = truncate_dnode(&rdn); |
| 783 | if (ret < 0) |
| 784 | goto out_err; |
Jaegeuk Kim | 12719ae | 2016-01-07 13:23:12 -0800 | [diff] [blame] | 785 | if (set_nid(page, i, 0, false)) |
| 786 | dn->node_changed = true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 787 | } |
| 788 | } else { |
| 789 | child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; |
| 790 | for (i = ofs; i < NIDS_PER_BLOCK; i++) { |
| 791 | child_nid = le32_to_cpu(rn->in.nid[i]); |
| 792 | if (child_nid == 0) { |
| 793 | child_nofs += NIDS_PER_BLOCK + 1; |
| 794 | continue; |
| 795 | } |
| 796 | rdn.nid = child_nid; |
| 797 | ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); |
| 798 | if (ret == (NIDS_PER_BLOCK + 1)) { |
Jaegeuk Kim | 12719ae | 2016-01-07 13:23:12 -0800 | [diff] [blame] | 799 | if (set_nid(page, i, 0, false)) |
| 800 | dn->node_changed = true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 801 | child_nofs += ret; |
| 802 | } else if (ret < 0 && ret != -ENOENT) { |
| 803 | goto out_err; |
| 804 | } |
| 805 | } |
| 806 | freed = child_nofs; |
| 807 | } |
| 808 | |
| 809 | if (!ofs) { |
| 810 | /* remove current indirect node */ |
| 811 | dn->node_page = page; |
| 812 | truncate_node(dn); |
| 813 | freed++; |
| 814 | } else { |
| 815 | f2fs_put_page(page, 1); |
| 816 | } |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 817 | trace_f2fs_truncate_nodes_exit(dn->inode, freed); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 818 | return freed; |
| 819 | |
| 820 | out_err: |
| 821 | f2fs_put_page(page, 1); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 822 | trace_f2fs_truncate_nodes_exit(dn->inode, ret); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 823 | return ret; |
| 824 | } |
| 825 | |
| 826 | static int truncate_partial_nodes(struct dnode_of_data *dn, |
| 827 | struct f2fs_inode *ri, int *offset, int depth) |
| 828 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 829 | struct page *pages[2]; |
| 830 | nid_t nid[3]; |
| 831 | nid_t child_nid; |
| 832 | int err = 0; |
| 833 | int i; |
| 834 | int idx = depth - 2; |
| 835 | |
| 836 | nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); |
| 837 | if (!nid[0]) |
| 838 | return 0; |
| 839 | |
| 840 | /* get indirect nodes in the path */ |
shifei10.ge | a225dca | 2013-10-29 15:32:34 +0800 | [diff] [blame] | 841 | for (i = 0; i < idx + 1; i++) { |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 842 | /* reference count'll be increased */ |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 843 | pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 844 | if (IS_ERR(pages[i])) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 845 | err = PTR_ERR(pages[i]); |
shifei10.ge | a225dca | 2013-10-29 15:32:34 +0800 | [diff] [blame] | 846 | idx = i - 1; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 847 | goto fail; |
| 848 | } |
| 849 | nid[i + 1] = get_nid(pages[i], offset[i + 1], false); |
| 850 | } |
| 851 | |
Jaegeuk Kim | 79344ef | 2016-05-06 16:19:43 -0700 | [diff] [blame] | 852 | ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); |
| 853 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 854 | /* free direct nodes linked to a partial indirect node */ |
shifei10.ge | a225dca | 2013-10-29 15:32:34 +0800 | [diff] [blame] | 855 | for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 856 | child_nid = get_nid(pages[idx], i, false); |
| 857 | if (!child_nid) |
| 858 | continue; |
| 859 | dn->nid = child_nid; |
| 860 | err = truncate_dnode(dn); |
| 861 | if (err < 0) |
| 862 | goto fail; |
Jaegeuk Kim | 12719ae | 2016-01-07 13:23:12 -0800 | [diff] [blame] | 863 | if (set_nid(pages[idx], i, 0, false)) |
| 864 | dn->node_changed = true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 865 | } |
| 866 | |
shifei10.ge | a225dca | 2013-10-29 15:32:34 +0800 | [diff] [blame] | 867 | if (offset[idx + 1] == 0) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 868 | dn->node_page = pages[idx]; |
| 869 | dn->nid = nid[idx]; |
| 870 | truncate_node(dn); |
| 871 | } else { |
| 872 | f2fs_put_page(pages[idx], 1); |
| 873 | } |
| 874 | offset[idx]++; |
shifei10.ge | a225dca | 2013-10-29 15:32:34 +0800 | [diff] [blame] | 875 | offset[idx + 1] = 0; |
| 876 | idx--; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 877 | fail: |
shifei10.ge | a225dca | 2013-10-29 15:32:34 +0800 | [diff] [blame] | 878 | for (i = idx; i >= 0; i--) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 879 | f2fs_put_page(pages[i], 1); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 880 | |
| 881 | trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); |
| 882 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 883 | return err; |
| 884 | } |
| 885 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 886 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 887 | * All the block addresses of data and nodes should be nullified. |
| 888 | */ |
| 889 | int truncate_inode_blocks(struct inode *inode, pgoff_t from) |
| 890 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 891 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 892 | int err = 0, cont = 1; |
| 893 | int level, offset[4], noffset[4]; |
Jaegeuk Kim | 7dd690c | 2013-02-12 07:28:55 +0900 | [diff] [blame] | 894 | unsigned int nofs = 0; |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 895 | struct f2fs_inode *ri; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 896 | struct dnode_of_data dn; |
| 897 | struct page *page; |
| 898 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 899 | trace_f2fs_truncate_inode_blocks_enter(inode, from); |
| 900 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 901 | level = get_node_path(inode, from, offset, noffset); |
Jaegeuk Kim | d6f5d63 | 2017-08-21 13:51:32 -0700 | [diff] [blame] | 902 | if (level < 0) |
| 903 | return level; |
Jaegeuk Kim | ff37355 | 2016-03-29 16:13:45 -0700 | [diff] [blame] | 904 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 905 | page = get_node_page(sbi, inode->i_ino); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 906 | if (IS_ERR(page)) { |
| 907 | trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 908 | return PTR_ERR(page); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 909 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 910 | |
| 911 | set_new_dnode(&dn, inode, page, NULL, 0); |
| 912 | unlock_page(page); |
| 913 | |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 914 | ri = F2FS_INODE(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 915 | switch (level) { |
| 916 | case 0: |
| 917 | case 1: |
| 918 | nofs = noffset[1]; |
| 919 | break; |
| 920 | case 2: |
| 921 | nofs = noffset[1]; |
| 922 | if (!offset[level - 1]) |
| 923 | goto skip_partial; |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 924 | err = truncate_partial_nodes(&dn, ri, offset, level); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 925 | if (err < 0 && err != -ENOENT) |
| 926 | goto fail; |
| 927 | nofs += 1 + NIDS_PER_BLOCK; |
| 928 | break; |
| 929 | case 3: |
| 930 | nofs = 5 + 2 * NIDS_PER_BLOCK; |
| 931 | if (!offset[level - 1]) |
| 932 | goto skip_partial; |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 933 | err = truncate_partial_nodes(&dn, ri, offset, level); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 934 | if (err < 0 && err != -ENOENT) |
| 935 | goto fail; |
| 936 | break; |
| 937 | default: |
| 938 | BUG(); |
| 939 | } |
| 940 | |
| 941 | skip_partial: |
| 942 | while (cont) { |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 943 | 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] | 944 | switch (offset[0]) { |
| 945 | case NODE_DIR1_BLOCK: |
| 946 | case NODE_DIR2_BLOCK: |
| 947 | err = truncate_dnode(&dn); |
| 948 | break; |
| 949 | |
| 950 | case NODE_IND1_BLOCK: |
| 951 | case NODE_IND2_BLOCK: |
| 952 | err = truncate_nodes(&dn, nofs, offset[1], 2); |
| 953 | break; |
| 954 | |
| 955 | case NODE_DIND_BLOCK: |
| 956 | err = truncate_nodes(&dn, nofs, offset[1], 3); |
| 957 | cont = 0; |
| 958 | break; |
| 959 | |
| 960 | default: |
| 961 | BUG(); |
| 962 | } |
| 963 | if (err < 0 && err != -ENOENT) |
| 964 | goto fail; |
| 965 | if (offset[1] == 0 && |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 966 | ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 967 | lock_page(page); |
Jaegeuk Kim | ff37355 | 2016-03-29 16:13:45 -0700 | [diff] [blame] | 968 | BUG_ON(page->mapping != NODE_MAPPING(sbi)); |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 969 | f2fs_wait_on_page_writeback(page, NODE, true); |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 970 | ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 971 | set_page_dirty(page); |
| 972 | unlock_page(page); |
| 973 | } |
| 974 | offset[1] = 0; |
| 975 | offset[0]++; |
| 976 | nofs += err; |
| 977 | } |
| 978 | fail: |
| 979 | f2fs_put_page(page, 0); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 980 | trace_f2fs_truncate_inode_blocks_exit(inode, err); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 981 | return err > 0 ? 0 : err; |
| 982 | } |
| 983 | |
Jaegeuk Kim | 41d5923 | 2017-10-19 11:48:57 -0700 | [diff] [blame] | 984 | /* caller must lock inode page */ |
| 985 | int truncate_xattr_node(struct inode *inode) |
Jaegeuk Kim | 4f16fb0 | 2013-08-14 20:40:06 +0900 | [diff] [blame] | 986 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 987 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 4f16fb0 | 2013-08-14 20:40:06 +0900 | [diff] [blame] | 988 | nid_t nid = F2FS_I(inode)->i_xattr_nid; |
| 989 | struct dnode_of_data dn; |
| 990 | struct page *npage; |
| 991 | |
| 992 | if (!nid) |
| 993 | return 0; |
| 994 | |
| 995 | npage = get_node_page(sbi, nid); |
| 996 | if (IS_ERR(npage)) |
| 997 | return PTR_ERR(npage); |
| 998 | |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 999 | f2fs_i_xnid_write(inode, 0); |
Jaegeuk Kim | 65985d9 | 2013-08-14 21:57:27 +0900 | [diff] [blame] | 1000 | |
Jaegeuk Kim | 41d5923 | 2017-10-19 11:48:57 -0700 | [diff] [blame] | 1001 | set_new_dnode(&dn, inode, NULL, npage, nid); |
Jaegeuk Kim | 4f16fb0 | 2013-08-14 20:40:06 +0900 | [diff] [blame] | 1002 | truncate_node(&dn); |
| 1003 | return 0; |
| 1004 | } |
| 1005 | |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 1006 | /* |
Chao Yu | 4f4124d | 2013-12-21 18:02:14 +0800 | [diff] [blame] | 1007 | * Caller should grab and release a rwsem by calling f2fs_lock_op() and |
| 1008 | * f2fs_unlock_op(). |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 1009 | */ |
Chao Yu | 13ec729 | 2015-08-24 17:40:45 +0800 | [diff] [blame] | 1010 | int remove_inode_page(struct inode *inode) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1011 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1012 | struct dnode_of_data dn; |
Chao Yu | 13ec729 | 2015-08-24 17:40:45 +0800 | [diff] [blame] | 1013 | int err; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1014 | |
Jaegeuk Kim | c2e6958 | 2014-08-25 14:45:59 -0700 | [diff] [blame] | 1015 | set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); |
Chao Yu | 13ec729 | 2015-08-24 17:40:45 +0800 | [diff] [blame] | 1016 | err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); |
| 1017 | if (err) |
| 1018 | return err; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1019 | |
Jaegeuk Kim | 41d5923 | 2017-10-19 11:48:57 -0700 | [diff] [blame] | 1020 | err = truncate_xattr_node(inode); |
Chao Yu | 13ec729 | 2015-08-24 17:40:45 +0800 | [diff] [blame] | 1021 | if (err) { |
Jaegeuk Kim | c2e6958 | 2014-08-25 14:45:59 -0700 | [diff] [blame] | 1022 | f2fs_put_dnode(&dn); |
Chao Yu | 13ec729 | 2015-08-24 17:40:45 +0800 | [diff] [blame] | 1023 | return err; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1024 | } |
Jaegeuk Kim | c2e6958 | 2014-08-25 14:45:59 -0700 | [diff] [blame] | 1025 | |
| 1026 | /* remove potential inline_data blocks */ |
| 1027 | if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
| 1028 | S_ISLNK(inode->i_mode)) |
| 1029 | truncate_data_blocks_range(&dn, 1); |
| 1030 | |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 1031 | /* 0 is possible, after f2fs_new_inode() has failed */ |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 1032 | f2fs_bug_on(F2FS_I_SB(inode), |
Chao Yu | 56a0d93 | 2017-06-14 23:00:56 +0800 | [diff] [blame] | 1033 | inode->i_blocks != 0 && inode->i_blocks != 8); |
Jaegeuk Kim | c2e6958 | 2014-08-25 14:45:59 -0700 | [diff] [blame] | 1034 | |
| 1035 | /* will put inode & node pages */ |
Jaegeuk Kim | 71e9fec | 2012-12-20 15:10:06 +0900 | [diff] [blame] | 1036 | truncate_node(&dn); |
Chao Yu | 13ec729 | 2015-08-24 17:40:45 +0800 | [diff] [blame] | 1037 | return 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1038 | } |
| 1039 | |
Jaegeuk Kim | a014e03 | 2014-06-20 21:44:02 -0700 | [diff] [blame] | 1040 | struct page *new_inode_page(struct inode *inode) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1041 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1042 | struct dnode_of_data dn; |
| 1043 | |
| 1044 | /* allocate inode page for new inode */ |
| 1045 | set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); |
Jaegeuk Kim | 44a83ff | 2013-05-20 10:10:29 +0900 | [diff] [blame] | 1046 | |
| 1047 | /* caller should f2fs_put_page(page, 1); */ |
Yunlei He | 40df136 | 2017-07-17 19:16:11 +0800 | [diff] [blame] | 1048 | return new_node_page(&dn, 0); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1049 | } |
| 1050 | |
Yunlei He | 40df136 | 2017-07-17 19:16:11 +0800 | [diff] [blame] | 1051 | 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] | 1052 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1053 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1054 | struct node_info new_ni; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1055 | struct page *page; |
| 1056 | int err; |
| 1057 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1058 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1059 | return ERR_PTR(-EPERM); |
| 1060 | |
Jaegeuk Kim | 300e129 | 2016-04-29 16:11:53 -0700 | [diff] [blame] | 1061 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1062 | if (!page) |
| 1063 | return ERR_PTR(-ENOMEM); |
| 1064 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1065 | if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) |
Jaegeuk Kim | 9c02740 | 2013-08-12 16:00:46 +0900 | [diff] [blame] | 1066 | goto fail; |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1067 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1068 | #ifdef CONFIG_F2FS_CHECK_FS |
| 1069 | get_node_info(sbi, dn->nid, &new_ni); |
| 1070 | f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); |
| 1071 | #endif |
| 1072 | new_ni.nid = dn->nid; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1073 | new_ni.ino = dn->inode->i_ino; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1074 | new_ni.blk_addr = NULL_ADDR; |
| 1075 | new_ni.flag = 0; |
| 1076 | new_ni.version = 0; |
Jaegeuk Kim | 479f40c | 2014-03-20 21:52:53 +0900 | [diff] [blame] | 1077 | set_node_addr(sbi, &new_ni, NEW_ADDR, false); |
Jaegeuk Kim | 9c02740 | 2013-08-12 16:00:46 +0900 | [diff] [blame] | 1078 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 1079 | f2fs_wait_on_page_writeback(page, NODE, true); |
Jaegeuk Kim | 9c02740 | 2013-08-12 16:00:46 +0900 | [diff] [blame] | 1080 | fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); |
Jaegeuk Kim | 398b1ac | 2012-12-19 15:28:39 +0900 | [diff] [blame] | 1081 | set_cold_node(dn->inode, page); |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 1082 | if (!PageUptodate(page)) |
| 1083 | SetPageUptodate(page); |
Jaegeuk Kim | 12719ae | 2016-01-07 13:23:12 -0800 | [diff] [blame] | 1084 | if (set_page_dirty(page)) |
| 1085 | dn->node_changed = true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1086 | |
Chao Yu | 4bc8e9b | 2014-03-17 16:35:06 +0800 | [diff] [blame] | 1087 | if (f2fs_has_xattr_block(ofs)) |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 1088 | f2fs_i_xnid_write(dn->inode, dn->nid); |
Jaegeuk Kim | 479bd73 | 2013-08-12 16:04:53 +0900 | [diff] [blame] | 1089 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1090 | if (ofs == 0) |
| 1091 | inc_valid_inode_count(sbi); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1092 | return page; |
| 1093 | |
| 1094 | fail: |
Jaegeuk Kim | 71e9fec | 2012-12-20 15:10:06 +0900 | [diff] [blame] | 1095 | clear_node_page_dirty(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1096 | f2fs_put_page(page, 1); |
| 1097 | return ERR_PTR(err); |
| 1098 | } |
| 1099 | |
Jaegeuk Kim | 56ae674 | 2013-03-31 12:47:20 +0900 | [diff] [blame] | 1100 | /* |
| 1101 | * Caller should do after getting the following values. |
| 1102 | * 0: f2fs_put_page(page, 0) |
Jaegeuk Kim | 86531d6 | 2015-07-15 13:08:21 -0700 | [diff] [blame] | 1103 | * LOCKED_PAGE or error: f2fs_put_page(page, 1) |
Jaegeuk Kim | 56ae674 | 2013-03-31 12:47:20 +0900 | [diff] [blame] | 1104 | */ |
Mike Christie | 04d328d | 2016-06-05 14:31:55 -0500 | [diff] [blame] | 1105 | static int read_node_page(struct page *page, int op_flags) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1106 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1107 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1108 | struct node_info ni; |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 1109 | struct f2fs_io_info fio = { |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1110 | .sbi = sbi, |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 1111 | .type = NODE, |
Mike Christie | 04d328d | 2016-06-05 14:31:55 -0500 | [diff] [blame] | 1112 | .op = REQ_OP_READ, |
| 1113 | .op_flags = op_flags, |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1114 | .page = page, |
Jaegeuk Kim | 4375a33 | 2015-04-23 12:04:33 -0700 | [diff] [blame] | 1115 | .encrypted_page = NULL, |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 1116 | }; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1117 | |
Jaegeuk Kim | 3bdad3c | 2016-06-30 19:04:16 -0700 | [diff] [blame] | 1118 | if (PageUptodate(page)) |
| 1119 | return LOCKED_PAGE; |
| 1120 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1121 | get_node_info(sbi, page->index, &ni); |
| 1122 | |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 1123 | if (unlikely(ni.blk_addr == NULL_ADDR)) { |
Jaegeuk Kim | 2bca1e2 | 2015-02-25 19:25:01 -0800 | [diff] [blame] | 1124 | ClearPageUptodate(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1125 | return -ENOENT; |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 1126 | } |
| 1127 | |
Chao Yu | 7a9d754 | 2016-02-22 18:36:38 +0800 | [diff] [blame] | 1128 | fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1129 | return f2fs_submit_page_bio(&fio); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1130 | } |
| 1131 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1132 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1133 | * Readahead a node page |
| 1134 | */ |
| 1135 | void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) |
| 1136 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1137 | struct page *apage; |
Jaegeuk Kim | 56ae674 | 2013-03-31 12:47:20 +0900 | [diff] [blame] | 1138 | int err; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1139 | |
Chao Yu | e8458725 | 2016-01-08 20:13:37 +0800 | [diff] [blame] | 1140 | if (!nid) |
| 1141 | return; |
| 1142 | f2fs_bug_on(sbi, check_nid_range(sbi, nid)); |
| 1143 | |
Fan Li | 999270d | 2016-02-29 14:29:51 +0800 | [diff] [blame] | 1144 | rcu_read_lock(); |
| 1145 | apage = radix_tree_lookup(&NODE_MAPPING(sbi)->page_tree, nid); |
| 1146 | rcu_read_unlock(); |
| 1147 | if (apage) |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 1148 | return; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1149 | |
Jaegeuk Kim | 300e129 | 2016-04-29 16:11:53 -0700 | [diff] [blame] | 1150 | apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1151 | if (!apage) |
| 1152 | return; |
| 1153 | |
Christoph Hellwig | 7024628 | 2016-07-19 11:28:41 +0200 | [diff] [blame] | 1154 | err = read_node_page(apage, REQ_RAHEAD); |
Jaegeuk Kim | 86531d6 | 2015-07-15 13:08:21 -0700 | [diff] [blame] | 1155 | f2fs_put_page(apage, err ? 1 : 0); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1156 | } |
| 1157 | |
Jaegeuk Kim | 17a0ee5 | 2016-03-08 09:04:35 -0800 | [diff] [blame] | 1158 | 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] | 1159 | struct page *parent, int start) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1160 | { |
Jaegeuk Kim | 56ae674 | 2013-03-31 12:47:20 +0900 | [diff] [blame] | 1161 | struct page *page; |
| 1162 | int err; |
Jaegeuk Kim | 4aa69d5 | 2015-12-23 14:17:47 -0800 | [diff] [blame] | 1163 | |
| 1164 | if (!nid) |
| 1165 | return ERR_PTR(-ENOENT); |
| 1166 | f2fs_bug_on(sbi, check_nid_range(sbi, nid)); |
Jaegeuk Kim | afcb7ca0 | 2013-04-26 11:55:17 +0900 | [diff] [blame] | 1167 | repeat: |
Jaegeuk Kim | 300e129 | 2016-04-29 16:11:53 -0700 | [diff] [blame] | 1168 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1169 | if (!page) |
| 1170 | return ERR_PTR(-ENOMEM); |
| 1171 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1172 | err = read_node_page(page, 0); |
Jaegeuk Kim | 86531d6 | 2015-07-15 13:08:21 -0700 | [diff] [blame] | 1173 | if (err < 0) { |
| 1174 | f2fs_put_page(page, 1); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1175 | return ERR_PTR(err); |
Chao Yu | e1c51b9f | 2015-12-11 16:08:22 +0800 | [diff] [blame] | 1176 | } else if (err == LOCKED_PAGE) { |
Chao Yu | b8329ee | 2017-06-07 11:17:35 +0800 | [diff] [blame] | 1177 | err = 0; |
Chao Yu | e1c51b9f | 2015-12-11 16:08:22 +0800 | [diff] [blame] | 1178 | goto page_hit; |
Jaegeuk Kim | 86531d6 | 2015-07-15 13:08:21 -0700 | [diff] [blame] | 1179 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1180 | |
Chao Yu | 0e022ea | 2016-01-05 16:52:46 +0800 | [diff] [blame] | 1181 | if (parent) |
Jaegeuk Kim | 79344ef | 2016-05-06 16:19:43 -0700 | [diff] [blame] | 1182 | ra_node_pages(parent, start + 1, MAX_RA_NODE); |
Chao Yu | 0e022ea | 2016-01-05 16:52:46 +0800 | [diff] [blame] | 1183 | |
Chao Yu | e1c51b9f | 2015-12-11 16:08:22 +0800 | [diff] [blame] | 1184 | lock_page(page); |
| 1185 | |
Jaegeuk Kim | 4ef51a8 | 2014-01-21 18:51:16 +0900 | [diff] [blame] | 1186 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { |
Jaegeuk Kim | afcb7ca0 | 2013-04-26 11:55:17 +0900 | [diff] [blame] | 1187 | f2fs_put_page(page, 1); |
| 1188 | goto repeat; |
| 1189 | } |
Chao Yu | 1563ac7 | 2016-07-03 22:05:12 +0800 | [diff] [blame] | 1190 | |
Chao Yu | b8329ee | 2017-06-07 11:17:35 +0800 | [diff] [blame] | 1191 | if (unlikely(!PageUptodate(page))) { |
| 1192 | err = -EIO; |
Chao Yu | 1563ac7 | 2016-07-03 22:05:12 +0800 | [diff] [blame] | 1193 | goto out_err; |
Chao Yu | b8329ee | 2017-06-07 11:17:35 +0800 | [diff] [blame] | 1194 | } |
Chao Yu | 4310125 | 2017-07-31 20:19:09 +0800 | [diff] [blame] | 1195 | |
| 1196 | if (!f2fs_inode_chksum_verify(sbi, page)) { |
| 1197 | err = -EBADMSG; |
| 1198 | goto out_err; |
| 1199 | } |
Chao Yu | e1c51b9f | 2015-12-11 16:08:22 +0800 | [diff] [blame] | 1200 | page_hit: |
Yunlong Song | 0c9df7f | 2016-05-26 19:40:29 +0800 | [diff] [blame] | 1201 | if(unlikely(nid != nid_of_node(page))) { |
Chao Yu | b8329ee | 2017-06-07 11:17:35 +0800 | [diff] [blame] | 1202 | f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, " |
| 1203 | "nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", |
| 1204 | nid, nid_of_node(page), ino_of_node(page), |
| 1205 | ofs_of_node(page), cpver_of_node(page), |
| 1206 | next_blkaddr_of_node(page)); |
Chao Yu | b8329ee | 2017-06-07 11:17:35 +0800 | [diff] [blame] | 1207 | err = -EINVAL; |
Yunlong Song | 0c9df7f | 2016-05-26 19:40:29 +0800 | [diff] [blame] | 1208 | out_err: |
Jaegeuk Kim | c5497ec | 2017-08-31 16:54:51 -0700 | [diff] [blame] | 1209 | ClearPageUptodate(page); |
Yunlong Song | 0c9df7f | 2016-05-26 19:40:29 +0800 | [diff] [blame] | 1210 | f2fs_put_page(page, 1); |
Chao Yu | b8329ee | 2017-06-07 11:17:35 +0800 | [diff] [blame] | 1211 | return ERR_PTR(err); |
Yunlong Song | 0c9df7f | 2016-05-26 19:40:29 +0800 | [diff] [blame] | 1212 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1213 | return page; |
| 1214 | } |
| 1215 | |
Chao Yu | 0e022ea | 2016-01-05 16:52:46 +0800 | [diff] [blame] | 1216 | struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) |
| 1217 | { |
| 1218 | return __get_node_page(sbi, nid, NULL, 0); |
| 1219 | } |
| 1220 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1221 | struct page *get_node_page_ra(struct page *parent, int start) |
| 1222 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1223 | struct f2fs_sb_info *sbi = F2FS_P_SB(parent); |
Chao Yu | 0e022ea | 2016-01-05 16:52:46 +0800 | [diff] [blame] | 1224 | nid_t nid = get_nid(parent, start, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1225 | |
Chao Yu | 0e022ea | 2016-01-05 16:52:46 +0800 | [diff] [blame] | 1226 | return __get_node_page(sbi, nid, parent, start); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1227 | } |
| 1228 | |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1229 | static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) |
| 1230 | { |
| 1231 | struct inode *inode; |
| 1232 | struct page *page; |
Chao Yu | 0f3311a | 2016-05-21 00:11:09 +0800 | [diff] [blame] | 1233 | int ret; |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1234 | |
| 1235 | /* should flush inline_data before evict_inode */ |
| 1236 | inode = ilookup(sbi->sb, ino); |
| 1237 | if (!inode) |
| 1238 | return; |
| 1239 | |
Chao Yu | 58ddec8 | 2017-10-28 16:52:30 +0800 | [diff] [blame] | 1240 | page = f2fs_pagecache_get_page(inode->i_mapping, 0, |
| 1241 | FGP_LOCK|FGP_NOWAIT, 0); |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1242 | if (!page) |
| 1243 | goto iput_out; |
| 1244 | |
| 1245 | if (!PageUptodate(page)) |
| 1246 | goto page_out; |
| 1247 | |
| 1248 | if (!PageDirty(page)) |
| 1249 | goto page_out; |
| 1250 | |
| 1251 | if (!clear_page_dirty_for_io(page)) |
| 1252 | goto page_out; |
| 1253 | |
Chao Yu | 0f3311a | 2016-05-21 00:11:09 +0800 | [diff] [blame] | 1254 | ret = f2fs_write_inline_data(inode, page); |
| 1255 | inode_dec_dirty_pages(inode); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1256 | remove_dirty_inode(inode); |
Chao Yu | 0f3311a | 2016-05-21 00:11:09 +0800 | [diff] [blame] | 1257 | if (ret) |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1258 | set_page_dirty(page); |
| 1259 | page_out: |
Jaegeuk Kim | 4a6de50 | 2016-03-30 11:25:31 -0700 | [diff] [blame] | 1260 | f2fs_put_page(page, 1); |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1261 | iput_out: |
| 1262 | iput(inode); |
| 1263 | } |
| 1264 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1265 | 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] | 1266 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1267 | pgoff_t index, end; |
| 1268 | struct pagevec pvec; |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1269 | struct page *last_page = NULL; |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1270 | |
| 1271 | pagevec_init(&pvec, 0); |
| 1272 | index = 0; |
| 1273 | end = ULONG_MAX; |
| 1274 | |
| 1275 | while (index <= end) { |
| 1276 | int i, nr_pages; |
| 1277 | nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, |
| 1278 | PAGECACHE_TAG_DIRTY, |
| 1279 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); |
| 1280 | if (nr_pages == 0) |
| 1281 | break; |
| 1282 | |
| 1283 | for (i = 0; i < nr_pages; i++) { |
| 1284 | struct page *page = pvec.pages[i]; |
| 1285 | |
| 1286 | if (unlikely(f2fs_cp_error(sbi))) { |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1287 | f2fs_put_page(last_page, 0); |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1288 | pagevec_release(&pvec); |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1289 | return ERR_PTR(-EIO); |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1290 | } |
| 1291 | |
| 1292 | if (!IS_DNODE(page) || !is_cold_node(page)) |
| 1293 | continue; |
| 1294 | if (ino_of_node(page) != ino) |
| 1295 | continue; |
| 1296 | |
| 1297 | lock_page(page); |
| 1298 | |
| 1299 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { |
| 1300 | continue_unlock: |
| 1301 | unlock_page(page); |
| 1302 | continue; |
| 1303 | } |
| 1304 | if (ino_of_node(page) != ino) |
| 1305 | goto continue_unlock; |
| 1306 | |
| 1307 | if (!PageDirty(page)) { |
| 1308 | /* someone wrote it for us */ |
| 1309 | goto continue_unlock; |
| 1310 | } |
| 1311 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1312 | if (last_page) |
| 1313 | f2fs_put_page(last_page, 0); |
| 1314 | |
| 1315 | get_page(page); |
| 1316 | last_page = page; |
| 1317 | unlock_page(page); |
| 1318 | } |
| 1319 | pagevec_release(&pvec); |
| 1320 | cond_resched(); |
| 1321 | } |
| 1322 | return last_page; |
| 1323 | } |
| 1324 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1325 | static int __write_node_page(struct page *page, bool atomic, bool *submitted, |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 1326 | struct writeback_control *wbc, bool do_balance, |
| 1327 | enum iostat_type io_type) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1328 | { |
| 1329 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
| 1330 | nid_t nid; |
| 1331 | struct node_info ni; |
| 1332 | struct f2fs_io_info fio = { |
| 1333 | .sbi = sbi, |
Chao Yu | f014be8 | 2017-09-29 13:59:38 +0800 | [diff] [blame] | 1334 | .ino = ino_of_node(page), |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1335 | .type = NODE, |
| 1336 | .op = REQ_OP_WRITE, |
| 1337 | .op_flags = wbc_to_write_flags(wbc), |
| 1338 | .page = page, |
| 1339 | .encrypted_page = NULL, |
| 1340 | .submitted = false, |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 1341 | .io_type = io_type, |
Yufen Yu | cbd5e5a | 2018-01-09 19:33:39 +0800 | [diff] [blame] | 1342 | .io_wbc = wbc, |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1343 | }; |
| 1344 | |
| 1345 | trace_f2fs_writepage(page, NODE); |
| 1346 | |
Chao Yu | 86f78c1 | 2018-01-18 17:29:10 +0800 | [diff] [blame^] | 1347 | if (unlikely(f2fs_cp_error(sbi))) { |
| 1348 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
| 1349 | unlock_page(page); |
| 1350 | return 0; |
| 1351 | } |
| 1352 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1353 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
| 1354 | goto redirty_out; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1355 | |
| 1356 | /* get old block addr of this node page */ |
| 1357 | nid = nid_of_node(page); |
| 1358 | f2fs_bug_on(sbi, page->index != nid); |
| 1359 | |
| 1360 | if (wbc->for_reclaim) { |
| 1361 | if (!down_read_trylock(&sbi->node_write)) |
| 1362 | goto redirty_out; |
| 1363 | } else { |
| 1364 | down_read(&sbi->node_write); |
| 1365 | } |
| 1366 | |
| 1367 | get_node_info(sbi, nid, &ni); |
| 1368 | |
| 1369 | /* This page is already truncated */ |
| 1370 | if (unlikely(ni.blk_addr == NULL_ADDR)) { |
| 1371 | ClearPageUptodate(page); |
| 1372 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
| 1373 | up_read(&sbi->node_write); |
| 1374 | unlock_page(page); |
| 1375 | return 0; |
| 1376 | } |
| 1377 | |
| 1378 | if (atomic && !test_opt(sbi, NOBARRIER)) |
| 1379 | fio.op_flags |= REQ_PREFLUSH | REQ_FUA; |
| 1380 | |
| 1381 | set_page_writeback(page); |
| 1382 | fio.old_blkaddr = ni.blk_addr; |
| 1383 | write_node_page(nid, &fio); |
| 1384 | set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); |
| 1385 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
| 1386 | up_read(&sbi->node_write); |
| 1387 | |
| 1388 | if (wbc->for_reclaim) { |
Jaegeuk Kim | 9bc576a | 2017-05-10 11:28:38 -0700 | [diff] [blame] | 1389 | f2fs_submit_merged_write_cond(sbi, page->mapping->host, 0, |
| 1390 | page->index, NODE); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1391 | submitted = NULL; |
| 1392 | } |
| 1393 | |
| 1394 | unlock_page(page); |
| 1395 | |
| 1396 | if (unlikely(f2fs_cp_error(sbi))) { |
Jaegeuk Kim | 9bc576a | 2017-05-10 11:28:38 -0700 | [diff] [blame] | 1397 | f2fs_submit_merged_write(sbi, NODE); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1398 | submitted = NULL; |
| 1399 | } |
| 1400 | if (submitted) |
| 1401 | *submitted = fio.submitted; |
| 1402 | |
Yunlong Song | 0c535c5 | 2017-07-27 20:11:00 +0800 | [diff] [blame] | 1403 | if (do_balance) |
| 1404 | f2fs_balance_fs(sbi, false); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1405 | return 0; |
| 1406 | |
| 1407 | redirty_out: |
| 1408 | redirty_page_for_writepage(wbc, page); |
| 1409 | return AOP_WRITEPAGE_ACTIVATE; |
| 1410 | } |
| 1411 | |
Yunlei He | 247e895 | 2017-10-30 14:18:55 +0800 | [diff] [blame] | 1412 | void move_node_page(struct page *node_page, int gc_type) |
| 1413 | { |
| 1414 | if (gc_type == FG_GC) { |
| 1415 | struct writeback_control wbc = { |
| 1416 | .sync_mode = WB_SYNC_ALL, |
| 1417 | .nr_to_write = 1, |
| 1418 | .for_reclaim = 0, |
| 1419 | }; |
| 1420 | |
| 1421 | set_page_dirty(node_page); |
| 1422 | f2fs_wait_on_page_writeback(node_page, NODE, true); |
| 1423 | |
| 1424 | f2fs_bug_on(F2FS_P_SB(node_page), PageWriteback(node_page)); |
| 1425 | if (!clear_page_dirty_for_io(node_page)) |
| 1426 | goto out_page; |
| 1427 | |
| 1428 | if (__write_node_page(node_page, false, NULL, |
| 1429 | &wbc, false, FS_GC_NODE_IO)) |
| 1430 | unlock_page(node_page); |
| 1431 | goto release_page; |
| 1432 | } else { |
| 1433 | /* set page dirty and write it */ |
| 1434 | if (!PageWriteback(node_page)) |
| 1435 | set_page_dirty(node_page); |
| 1436 | } |
| 1437 | out_page: |
| 1438 | unlock_page(node_page); |
| 1439 | release_page: |
| 1440 | f2fs_put_page(node_page, 0); |
| 1441 | } |
| 1442 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1443 | static int f2fs_write_node_page(struct page *page, |
| 1444 | struct writeback_control *wbc) |
| 1445 | { |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 1446 | return __write_node_page(page, false, NULL, wbc, false, FS_NODE_IO); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1447 | } |
| 1448 | |
Jaegeuk Kim | 26de9b1 | 2016-05-20 20:42:37 -0700 | [diff] [blame] | 1449 | int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1450 | struct writeback_control *wbc, bool atomic) |
| 1451 | { |
| 1452 | pgoff_t index, end; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1453 | pgoff_t last_idx = ULONG_MAX; |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1454 | struct pagevec pvec; |
| 1455 | int ret = 0; |
| 1456 | struct page *last_page = NULL; |
| 1457 | bool marked = false; |
Jaegeuk Kim | 26de9b1 | 2016-05-20 20:42:37 -0700 | [diff] [blame] | 1458 | nid_t ino = inode->i_ino; |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1459 | |
| 1460 | if (atomic) { |
| 1461 | last_page = last_fsync_dnode(sbi, ino); |
| 1462 | if (IS_ERR_OR_NULL(last_page)) |
| 1463 | return PTR_ERR_OR_ZERO(last_page); |
| 1464 | } |
| 1465 | retry: |
| 1466 | pagevec_init(&pvec, 0); |
| 1467 | index = 0; |
| 1468 | end = ULONG_MAX; |
| 1469 | |
| 1470 | while (index <= end) { |
| 1471 | int i, nr_pages; |
| 1472 | nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, |
| 1473 | PAGECACHE_TAG_DIRTY, |
| 1474 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); |
| 1475 | if (nr_pages == 0) |
| 1476 | break; |
| 1477 | |
| 1478 | for (i = 0; i < nr_pages; i++) { |
| 1479 | struct page *page = pvec.pages[i]; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1480 | bool submitted = false; |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1481 | |
| 1482 | if (unlikely(f2fs_cp_error(sbi))) { |
| 1483 | f2fs_put_page(last_page, 0); |
| 1484 | pagevec_release(&pvec); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1485 | ret = -EIO; |
| 1486 | goto out; |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1487 | } |
| 1488 | |
| 1489 | if (!IS_DNODE(page) || !is_cold_node(page)) |
| 1490 | continue; |
| 1491 | if (ino_of_node(page) != ino) |
| 1492 | continue; |
| 1493 | |
| 1494 | lock_page(page); |
| 1495 | |
| 1496 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { |
| 1497 | continue_unlock: |
| 1498 | unlock_page(page); |
| 1499 | continue; |
| 1500 | } |
| 1501 | if (ino_of_node(page) != ino) |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1502 | goto continue_unlock; |
| 1503 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1504 | if (!PageDirty(page) && page != last_page) { |
| 1505 | /* someone wrote it for us */ |
| 1506 | goto continue_unlock; |
| 1507 | } |
| 1508 | |
| 1509 | f2fs_wait_on_page_writeback(page, NODE, true); |
| 1510 | BUG_ON(PageWriteback(page)); |
| 1511 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1512 | set_fsync_mark(page, 0); |
| 1513 | set_dentry_mark(page, 0); |
| 1514 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1515 | if (!atomic || page == last_page) { |
| 1516 | set_fsync_mark(page, 1); |
Jaegeuk Kim | 26de9b1 | 2016-05-20 20:42:37 -0700 | [diff] [blame] | 1517 | if (IS_INODE(page)) { |
| 1518 | if (is_inode_flag_set(inode, |
| 1519 | FI_DIRTY_INODE)) |
| 1520 | update_inode(inode, page); |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1521 | set_dentry_mark(page, |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1522 | need_dentry_mark(sbi, ino)); |
Jaegeuk Kim | 26de9b1 | 2016-05-20 20:42:37 -0700 | [diff] [blame] | 1523 | } |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1524 | /* may be written by other thread */ |
| 1525 | if (!PageDirty(page)) |
| 1526 | set_page_dirty(page); |
| 1527 | } |
| 1528 | |
| 1529 | if (!clear_page_dirty_for_io(page)) |
| 1530 | goto continue_unlock; |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1531 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1532 | ret = __write_node_page(page, atomic && |
| 1533 | page == last_page, |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 1534 | &submitted, wbc, true, |
| 1535 | FS_NODE_IO); |
Jaegeuk Kim | c267ec1 | 2016-04-15 09:25:04 -0700 | [diff] [blame] | 1536 | if (ret) { |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1537 | unlock_page(page); |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1538 | f2fs_put_page(last_page, 0); |
| 1539 | break; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1540 | } else if (submitted) { |
| 1541 | last_idx = page->index; |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1542 | } |
Chao Yu | 3f5f495 | 2016-09-29 18:50:10 +0800 | [diff] [blame] | 1543 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1544 | if (page == last_page) { |
| 1545 | f2fs_put_page(page, 0); |
| 1546 | marked = true; |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1547 | break; |
Jaegeuk Kim | c267ec1 | 2016-04-15 09:25:04 -0700 | [diff] [blame] | 1548 | } |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1549 | } |
| 1550 | pagevec_release(&pvec); |
| 1551 | cond_resched(); |
| 1552 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1553 | if (ret || marked) |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1554 | break; |
| 1555 | } |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1556 | if (!ret && atomic && !marked) { |
| 1557 | f2fs_msg(sbi->sb, KERN_DEBUG, |
| 1558 | "Retry to write fsync mark: ino=%u, idx=%lx", |
| 1559 | ino, last_page->index); |
| 1560 | lock_page(last_page); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1561 | f2fs_wait_on_page_writeback(last_page, NODE, true); |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1562 | set_page_dirty(last_page); |
| 1563 | unlock_page(last_page); |
| 1564 | goto retry; |
| 1565 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1566 | out: |
| 1567 | if (last_idx != ULONG_MAX) |
Jaegeuk Kim | 9bc576a | 2017-05-10 11:28:38 -0700 | [diff] [blame] | 1568 | f2fs_submit_merged_write_cond(sbi, NULL, ino, last_idx, NODE); |
Jaegeuk Kim | c267ec1 | 2016-04-15 09:25:04 -0700 | [diff] [blame] | 1569 | return ret ? -EIO: 0; |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1570 | } |
| 1571 | |
Yunlong Song | 0c535c5 | 2017-07-27 20:11:00 +0800 | [diff] [blame] | 1572 | 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] | 1573 | bool do_balance, enum iostat_type io_type) |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1574 | { |
| 1575 | pgoff_t index, end; |
| 1576 | struct pagevec pvec; |
| 1577 | int step = 0; |
Jaegeuk Kim | 12bb0a8 | 2016-03-11 15:33:22 -0800 | [diff] [blame] | 1578 | int nwritten = 0; |
Chao Yu | 3f5f495 | 2016-09-29 18:50:10 +0800 | [diff] [blame] | 1579 | int ret = 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1580 | |
| 1581 | pagevec_init(&pvec, 0); |
| 1582 | |
| 1583 | next_step: |
| 1584 | index = 0; |
Chao Yu | 80dd9c0 | 2016-02-24 17:20:44 +0800 | [diff] [blame] | 1585 | end = ULONG_MAX; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1586 | |
| 1587 | while (index <= end) { |
| 1588 | int i, nr_pages; |
Jaegeuk Kim | 4ef51a8 | 2014-01-21 18:51:16 +0900 | [diff] [blame] | 1589 | nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1590 | PAGECACHE_TAG_DIRTY, |
| 1591 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); |
| 1592 | if (nr_pages == 0) |
| 1593 | break; |
| 1594 | |
| 1595 | for (i = 0; i < nr_pages; i++) { |
| 1596 | struct page *page = pvec.pages[i]; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1597 | bool submitted = false; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1598 | |
| 1599 | /* |
| 1600 | * flushing sequence with step: |
| 1601 | * 0. indirect nodes |
| 1602 | * 1. dentry dnodes |
| 1603 | * 2. file dnodes |
| 1604 | */ |
| 1605 | if (step == 0 && IS_DNODE(page)) |
| 1606 | continue; |
| 1607 | if (step == 1 && (!IS_DNODE(page) || |
| 1608 | is_cold_node(page))) |
| 1609 | continue; |
| 1610 | if (step == 2 && (!IS_DNODE(page) || |
| 1611 | !is_cold_node(page))) |
| 1612 | continue; |
Chao Yu | 9a4cbc9 | 2016-02-22 18:35:46 +0800 | [diff] [blame] | 1613 | lock_node: |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1614 | if (!trylock_page(page)) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1615 | continue; |
| 1616 | |
Jaegeuk Kim | 4ef51a8 | 2014-01-21 18:51:16 +0900 | [diff] [blame] | 1617 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1618 | continue_unlock: |
| 1619 | unlock_page(page); |
| 1620 | continue; |
| 1621 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1622 | |
| 1623 | if (!PageDirty(page)) { |
| 1624 | /* someone wrote it for us */ |
| 1625 | goto continue_unlock; |
| 1626 | } |
| 1627 | |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1628 | /* flush inline_data */ |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1629 | if (is_inline_node(page)) { |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1630 | clear_inline_node(page); |
| 1631 | unlock_page(page); |
| 1632 | flush_inline_data(sbi, ino_of_node(page)); |
Chao Yu | 9a4cbc9 | 2016-02-22 18:35:46 +0800 | [diff] [blame] | 1633 | goto lock_node; |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 1634 | } |
| 1635 | |
Jaegeuk Kim | fa3d2bd | 2016-01-28 11:48:52 -0800 | [diff] [blame] | 1636 | f2fs_wait_on_page_writeback(page, NODE, true); |
| 1637 | |
| 1638 | BUG_ON(PageWriteback(page)); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1639 | if (!clear_page_dirty_for_io(page)) |
| 1640 | goto continue_unlock; |
| 1641 | |
Jaegeuk Kim | 5268137 | 2016-04-13 16:24:44 -0700 | [diff] [blame] | 1642 | set_fsync_mark(page, 0); |
| 1643 | set_dentry_mark(page, 0); |
Jaegeuk Kim | 5274651 | 2014-08-11 18:18:36 -0700 | [diff] [blame] | 1644 | |
Yunlong Song | 0c535c5 | 2017-07-27 20:11:00 +0800 | [diff] [blame] | 1645 | ret = __write_node_page(page, false, &submitted, |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 1646 | wbc, do_balance, io_type); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1647 | if (ret) |
Jaegeuk Kim | 5274651 | 2014-08-11 18:18:36 -0700 | [diff] [blame] | 1648 | unlock_page(page); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1649 | else if (submitted) |
Chao Yu | 3f5f495 | 2016-09-29 18:50:10 +0800 | [diff] [blame] | 1650 | nwritten++; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1651 | |
| 1652 | if (--wbc->nr_to_write == 0) |
| 1653 | break; |
| 1654 | } |
| 1655 | pagevec_release(&pvec); |
| 1656 | cond_resched(); |
| 1657 | |
| 1658 | if (wbc->nr_to_write == 0) { |
| 1659 | step = 2; |
| 1660 | break; |
| 1661 | } |
| 1662 | } |
| 1663 | |
| 1664 | if (step < 2) { |
| 1665 | step++; |
| 1666 | goto next_step; |
| 1667 | } |
Chao Yu | 86f78c1 | 2018-01-18 17:29:10 +0800 | [diff] [blame^] | 1668 | |
Chao Yu | 3f5f495 | 2016-09-29 18:50:10 +0800 | [diff] [blame] | 1669 | if (nwritten) |
Jaegeuk Kim | 9bc576a | 2017-05-10 11:28:38 -0700 | [diff] [blame] | 1670 | f2fs_submit_merged_write(sbi, NODE); |
Chao Yu | 86f78c1 | 2018-01-18 17:29:10 +0800 | [diff] [blame^] | 1671 | |
| 1672 | if (unlikely(f2fs_cp_error(sbi))) |
| 1673 | return -EIO; |
Chao Yu | 3f5f495 | 2016-09-29 18:50:10 +0800 | [diff] [blame] | 1674 | return ret; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1675 | } |
| 1676 | |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1677 | int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) |
| 1678 | { |
Chao Yu | 80dd9c0 | 2016-02-24 17:20:44 +0800 | [diff] [blame] | 1679 | pgoff_t index = 0, end = ULONG_MAX; |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1680 | struct pagevec pvec; |
Miklos Szeredi | 280db3c | 2016-09-16 12:44:21 +0200 | [diff] [blame] | 1681 | int ret2, ret = 0; |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1682 | |
| 1683 | pagevec_init(&pvec, 0); |
Jaegeuk Kim | 4ef51a8 | 2014-01-21 18:51:16 +0900 | [diff] [blame] | 1684 | |
| 1685 | while (index <= end) { |
| 1686 | int i, nr_pages; |
| 1687 | nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, |
| 1688 | PAGECACHE_TAG_WRITEBACK, |
| 1689 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); |
| 1690 | if (nr_pages == 0) |
| 1691 | break; |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1692 | |
| 1693 | for (i = 0; i < nr_pages; i++) { |
| 1694 | struct page *page = pvec.pages[i]; |
| 1695 | |
| 1696 | /* until radix tree lookup accepts end_index */ |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 1697 | if (unlikely(page->index > end)) |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1698 | continue; |
| 1699 | |
Chao Yu | 4bf08ff | 2013-11-04 10:28:33 +0800 | [diff] [blame] | 1700 | if (ino && ino_of_node(page) == ino) { |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 1701 | f2fs_wait_on_page_writeback(page, NODE, true); |
Chao Yu | 4bf08ff | 2013-11-04 10:28:33 +0800 | [diff] [blame] | 1702 | if (TestClearPageError(page)) |
| 1703 | ret = -EIO; |
| 1704 | } |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1705 | } |
| 1706 | pagevec_release(&pvec); |
| 1707 | cond_resched(); |
| 1708 | } |
| 1709 | |
Miklos Szeredi | 280db3c | 2016-09-16 12:44:21 +0200 | [diff] [blame] | 1710 | ret2 = filemap_check_errors(NODE_MAPPING(sbi)); |
Jaegeuk Kim | cfe58f9 | 2013-10-31 14:57:01 +0900 | [diff] [blame] | 1711 | if (!ret) |
| 1712 | ret = ret2; |
| 1713 | return ret; |
| 1714 | } |
| 1715 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1716 | static int f2fs_write_node_pages(struct address_space *mapping, |
| 1717 | struct writeback_control *wbc) |
| 1718 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1719 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
Jaegeuk Kim | 9dfa1ba | 2016-07-13 19:33:19 -0700 | [diff] [blame] | 1720 | struct blk_plug plug; |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 1721 | long diff; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1722 | |
Chao Yu | 00cc7ed | 2017-06-29 23:20:45 +0800 | [diff] [blame] | 1723 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
| 1724 | goto skip_write; |
| 1725 | |
Jaegeuk Kim | 4660f9c | 2013-10-24 14:19:18 +0900 | [diff] [blame] | 1726 | /* balancing f2fs's metadata in background */ |
| 1727 | f2fs_balance_fs_bg(sbi); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1728 | |
Jaegeuk Kim | a7fdffb | 2013-01-18 14:54:13 +0900 | [diff] [blame] | 1729 | /* collect a number of dirty node pages and write together */ |
Jaegeuk Kim | 87d6f89 | 2014-03-18 12:40:49 +0900 | [diff] [blame] | 1730 | 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] | 1731 | goto skip_write; |
Jaegeuk Kim | a7fdffb | 2013-01-18 14:54:13 +0900 | [diff] [blame] | 1732 | |
Yunlei He | d31c7c3 | 2016-02-04 16:14:00 +0800 | [diff] [blame] | 1733 | trace_f2fs_writepages(mapping->host, wbc, NODE); |
| 1734 | |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 1735 | diff = nr_pages_to_write(sbi, NODE, wbc); |
Jaegeuk Kim | fb5566d | 2014-01-08 10:09:51 +0900 | [diff] [blame] | 1736 | wbc->sync_mode = WB_SYNC_NONE; |
Jaegeuk Kim | 9dfa1ba | 2016-07-13 19:33:19 -0700 | [diff] [blame] | 1737 | blk_start_plug(&plug); |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 1738 | sync_node_pages(sbi, wbc, true, FS_NODE_IO); |
Jaegeuk Kim | 9dfa1ba | 2016-07-13 19:33:19 -0700 | [diff] [blame] | 1739 | blk_finish_plug(&plug); |
Jaegeuk Kim | 50c8cdb | 2014-03-18 13:47:11 +0900 | [diff] [blame] | 1740 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1741 | return 0; |
Jaegeuk Kim | d3baf95 | 2014-03-18 13:43:05 +0900 | [diff] [blame] | 1742 | |
| 1743 | skip_write: |
| 1744 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); |
Yunlei He | d31c7c3 | 2016-02-04 16:14:00 +0800 | [diff] [blame] | 1745 | trace_f2fs_writepages(mapping->host, wbc, NODE); |
Jaegeuk Kim | d3baf95 | 2014-03-18 13:43:05 +0900 | [diff] [blame] | 1746 | return 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1747 | } |
| 1748 | |
| 1749 | static int f2fs_set_node_page_dirty(struct page *page) |
| 1750 | { |
Jaegeuk Kim | 26c6b88 | 2013-10-24 17:53:29 +0900 | [diff] [blame] | 1751 | trace_f2fs_set_page_dirty(page, NODE); |
| 1752 | |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 1753 | if (!PageUptodate(page)) |
| 1754 | SetPageUptodate(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1755 | if (!PageDirty(page)) { |
Jaegeuk Kim | fe76b79 | 2016-06-30 18:40:10 -0700 | [diff] [blame] | 1756 | f2fs_set_page_dirty_nobuffers(page); |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1757 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1758 | SetPagePrivate(page); |
Jaegeuk Kim | 9e4ded3 | 2014-12-17 19:58:58 -0800 | [diff] [blame] | 1759 | f2fs_trace_pid(page); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1760 | return 1; |
| 1761 | } |
| 1762 | return 0; |
| 1763 | } |
| 1764 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1765 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1766 | * Structure of the f2fs node operations |
| 1767 | */ |
| 1768 | const struct address_space_operations f2fs_node_aops = { |
| 1769 | .writepage = f2fs_write_node_page, |
| 1770 | .writepages = f2fs_write_node_pages, |
| 1771 | .set_page_dirty = f2fs_set_node_page_dirty, |
Chao Yu | 487261f | 2015-02-05 17:44:29 +0800 | [diff] [blame] | 1772 | .invalidatepage = f2fs_invalidate_page, |
| 1773 | .releasepage = f2fs_release_page, |
Weichao Guo | 5b7a487 | 2016-09-20 05:03:27 +0800 | [diff] [blame] | 1774 | #ifdef CONFIG_MIGRATION |
| 1775 | .migratepage = f2fs_migrate_page, |
| 1776 | #endif |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1777 | }; |
| 1778 | |
Jaegeuk Kim | 8a7ed66 | 2014-02-21 14:29:35 +0900 | [diff] [blame] | 1779 | static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, |
| 1780 | nid_t n) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1781 | { |
Jaegeuk Kim | 8a7ed66 | 2014-02-21 14:29:35 +0900 | [diff] [blame] | 1782 | return radix_tree_lookup(&nm_i->free_nid_root, n); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1783 | } |
| 1784 | |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1785 | static int __insert_free_nid(struct f2fs_sb_info *sbi, |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 1786 | struct free_nid *i, enum nid_state state) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1787 | { |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 1788 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1789 | |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 1790 | int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); |
| 1791 | if (err) |
| 1792 | return err; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1793 | |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1794 | f2fs_bug_on(sbi, state != i->state); |
| 1795 | nm_i->nid_cnt[state]++; |
| 1796 | if (state == FREE_NID) |
| 1797 | list_add_tail(&i->list, &nm_i->free_nid_list); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1798 | return 0; |
| 1799 | } |
| 1800 | |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1801 | static void __remove_free_nid(struct f2fs_sb_info *sbi, |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 1802 | struct free_nid *i, enum nid_state state) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1803 | { |
| 1804 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 1805 | |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1806 | f2fs_bug_on(sbi, state != i->state); |
| 1807 | nm_i->nid_cnt[state]--; |
| 1808 | if (state == FREE_NID) |
| 1809 | list_del(&i->list); |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 1810 | radix_tree_delete(&nm_i->free_nid_root, i->nid); |
| 1811 | } |
| 1812 | |
| 1813 | static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, |
| 1814 | enum nid_state org_state, enum nid_state dst_state) |
| 1815 | { |
| 1816 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 1817 | |
| 1818 | f2fs_bug_on(sbi, org_state != i->state); |
| 1819 | i->state = dst_state; |
| 1820 | nm_i->nid_cnt[org_state]--; |
| 1821 | nm_i->nid_cnt[dst_state]++; |
| 1822 | |
| 1823 | switch (dst_state) { |
| 1824 | case PREALLOC_NID: |
| 1825 | list_del(&i->list); |
| 1826 | break; |
| 1827 | case FREE_NID: |
| 1828 | list_add_tail(&i->list, &nm_i->free_nid_list); |
| 1829 | break; |
| 1830 | default: |
| 1831 | BUG_ON(1); |
| 1832 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1833 | } |
| 1834 | |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1835 | static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, |
| 1836 | bool set, bool build) |
| 1837 | { |
| 1838 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 1839 | unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); |
| 1840 | unsigned int nid_ofs = nid - START_NID(nid); |
| 1841 | |
| 1842 | if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) |
| 1843 | return; |
| 1844 | |
| 1845 | if (set) { |
| 1846 | if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) |
| 1847 | return; |
| 1848 | __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); |
| 1849 | nm_i->free_nid_count[nat_ofs]++; |
| 1850 | } else { |
| 1851 | if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) |
| 1852 | return; |
| 1853 | __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); |
| 1854 | if (!build) |
| 1855 | nm_i->free_nid_count[nat_ofs]--; |
| 1856 | } |
| 1857 | } |
| 1858 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1859 | /* return if the nid is recognized as free */ |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1860 | static bool add_free_nid(struct f2fs_sb_info *sbi, |
| 1861 | nid_t nid, bool build, bool update) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1862 | { |
| 1863 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 1864 | struct free_nid *i, *e; |
| 1865 | struct nat_entry *ne; |
| 1866 | int err = -EINVAL; |
| 1867 | bool ret = false; |
Jaegeuk Kim | 9198ace | 2013-04-25 13:21:12 +0900 | [diff] [blame] | 1868 | |
| 1869 | /* 0 nid should not be used */ |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 1870 | if (unlikely(nid == 0)) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1871 | return false; |
Gu Zheng | 7bd5938 | 2013-10-22 14:52:26 +0800 | [diff] [blame] | 1872 | |
| 1873 | i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1874 | i->nid = nid; |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1875 | i->state = FREE_NID; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1876 | |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1877 | radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 1878 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1879 | spin_lock(&nm_i->nid_list_lock); |
| 1880 | |
| 1881 | if (build) { |
| 1882 | /* |
| 1883 | * Thread A Thread B |
| 1884 | * - f2fs_create |
| 1885 | * - f2fs_new_inode |
| 1886 | * - alloc_nid |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1887 | * - __insert_nid_to_list(PREALLOC_NID) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1888 | * - f2fs_balance_fs_bg |
| 1889 | * - build_free_nids |
| 1890 | * - __build_free_nids |
| 1891 | * - scan_nat_page |
| 1892 | * - add_free_nid |
| 1893 | * - __lookup_nat_cache |
| 1894 | * - f2fs_add_link |
| 1895 | * - init_inode_metadata |
| 1896 | * - new_inode_page |
| 1897 | * - new_node_page |
| 1898 | * - set_node_addr |
| 1899 | * - alloc_nid_done |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1900 | * - __remove_nid_from_list(PREALLOC_NID) |
| 1901 | * - __insert_nid_to_list(FREE_NID) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1902 | */ |
| 1903 | ne = __lookup_nat_cache(nm_i, nid); |
| 1904 | if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || |
| 1905 | nat_get_blkaddr(ne) != NULL_ADDR)) |
| 1906 | goto err_out; |
| 1907 | |
| 1908 | e = __lookup_free_nid_list(nm_i, nid); |
| 1909 | if (e) { |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1910 | if (e->state == FREE_NID) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1911 | ret = true; |
| 1912 | goto err_out; |
| 1913 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1914 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1915 | ret = true; |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 1916 | err = __insert_free_nid(sbi, i, FREE_NID); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1917 | err_out: |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1918 | if (update) { |
| 1919 | update_free_nid_bitmap(sbi, nid, ret, build); |
| 1920 | if (!build) |
| 1921 | nm_i->available_nids++; |
| 1922 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1923 | spin_unlock(&nm_i->nid_list_lock); |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 1924 | radix_tree_preload_end(); |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1925 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1926 | if (err) |
| 1927 | kmem_cache_free(free_nid_slab, i); |
| 1928 | return ret; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1929 | } |
| 1930 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1931 | 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] | 1932 | { |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1933 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1934 | struct free_nid *i; |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 1935 | bool need_free = false; |
| 1936 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1937 | spin_lock(&nm_i->nid_list_lock); |
Jaegeuk Kim | 8a7ed66 | 2014-02-21 14:29:35 +0900 | [diff] [blame] | 1938 | i = __lookup_free_nid_list(nm_i, nid); |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 1939 | if (i && i->state == FREE_NID) { |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 1940 | __remove_free_nid(sbi, i, FREE_NID); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 1941 | need_free = true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1942 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1943 | spin_unlock(&nm_i->nid_list_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 1944 | |
| 1945 | if (need_free) |
| 1946 | kmem_cache_free(free_nid_slab, i); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1947 | } |
| 1948 | |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 1949 | static void scan_nat_page(struct f2fs_sb_info *sbi, |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1950 | struct page *nat_page, nid_t start_nid) |
| 1951 | { |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 1952 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1953 | struct f2fs_nat_block *nat_blk = page_address(nat_page); |
| 1954 | block_t blk_addr; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1955 | unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1956 | int i; |
| 1957 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1958 | __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); |
| 1959 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1960 | i = start_nid % NAT_ENTRY_PER_BLOCK; |
| 1961 | |
| 1962 | for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 1963 | if (unlikely(start_nid >= nm_i->max_nid)) |
Jaegeuk Kim | 04431c4 | 2013-03-16 08:34:37 +0900 | [diff] [blame] | 1964 | break; |
Haicheng Li | 23d3884 | 2013-05-06 23:15:43 +0800 | [diff] [blame] | 1965 | |
| 1966 | blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 1967 | f2fs_bug_on(sbi, blk_addr == NEW_ADDR); |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1968 | if (blk_addr == NULL_ADDR) { |
| 1969 | add_free_nid(sbi, start_nid, true, true); |
| 1970 | } else { |
| 1971 | spin_lock(&NM_I(sbi)->nid_list_lock); |
| 1972 | update_free_nid_bitmap(sbi, start_nid, false, true); |
| 1973 | spin_unlock(&NM_I(sbi)->nid_list_lock); |
| 1974 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1975 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 1976 | } |
| 1977 | |
Chao Yu | b561061 | 2017-11-08 17:47:36 +0800 | [diff] [blame] | 1978 | static void scan_curseg_cache(struct f2fs_sb_info *sbi) |
| 1979 | { |
| 1980 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); |
| 1981 | struct f2fs_journal *journal = curseg->journal; |
| 1982 | int i; |
| 1983 | |
| 1984 | down_read(&curseg->journal_rwsem); |
| 1985 | for (i = 0; i < nats_in_cursum(journal); i++) { |
| 1986 | block_t addr; |
| 1987 | nid_t nid; |
| 1988 | |
| 1989 | addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); |
| 1990 | nid = le32_to_cpu(nid_in_journal(journal, i)); |
| 1991 | if (addr == NULL_ADDR) |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 1992 | add_free_nid(sbi, nid, true, false); |
Chao Yu | b561061 | 2017-11-08 17:47:36 +0800 | [diff] [blame] | 1993 | else |
| 1994 | remove_free_nid(sbi, nid); |
| 1995 | } |
| 1996 | up_read(&curseg->journal_rwsem); |
| 1997 | } |
| 1998 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1999 | static void scan_free_nid_bits(struct f2fs_sb_info *sbi) |
| 2000 | { |
| 2001 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2002 | unsigned int i, idx; |
Fan Li | 5772e0c | 2017-11-07 19:14:24 +0800 | [diff] [blame] | 2003 | nid_t nid; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2004 | |
| 2005 | down_read(&nm_i->nat_tree_lock); |
| 2006 | |
| 2007 | for (i = 0; i < nm_i->nat_blocks; i++) { |
| 2008 | if (!test_bit_le(i, nm_i->nat_block_bitmap)) |
| 2009 | continue; |
| 2010 | if (!nm_i->free_nid_count[i]) |
| 2011 | continue; |
| 2012 | for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { |
Fan Li | 5772e0c | 2017-11-07 19:14:24 +0800 | [diff] [blame] | 2013 | idx = find_next_bit_le(nm_i->free_nid_bitmap[i], |
| 2014 | NAT_ENTRY_PER_BLOCK, idx); |
| 2015 | if (idx >= NAT_ENTRY_PER_BLOCK) |
| 2016 | break; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2017 | |
| 2018 | nid = i * NAT_ENTRY_PER_BLOCK + idx; |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 2019 | add_free_nid(sbi, nid, true, false); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2020 | |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2021 | if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2022 | goto out; |
| 2023 | } |
| 2024 | } |
| 2025 | out: |
Chao Yu | b561061 | 2017-11-08 17:47:36 +0800 | [diff] [blame] | 2026 | scan_curseg_cache(sbi); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2027 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2028 | up_read(&nm_i->nat_tree_lock); |
| 2029 | } |
| 2030 | |
| 2031 | 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] | 2032 | { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2033 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
Haicheng Li | 8760952 | 2013-05-06 23:15:42 +0800 | [diff] [blame] | 2034 | int i = 0; |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2035 | nid_t nid = nm_i->next_scan_nid; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2036 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2037 | if (unlikely(nid >= nm_i->max_nid)) |
| 2038 | nid = 0; |
| 2039 | |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2040 | /* Enough entries */ |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2041 | if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2042 | return; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2043 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2044 | if (!sync && !available_free_memory(sbi, FREE_NIDS)) |
| 2045 | return; |
| 2046 | |
| 2047 | if (!mount) { |
| 2048 | /* try to find free nids in free_nid_bitmap */ |
| 2049 | scan_free_nid_bits(sbi); |
| 2050 | |
Fan Li | a51e85e | 2017-11-07 11:04:33 +0800 | [diff] [blame] | 2051 | if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2052 | return; |
| 2053 | } |
| 2054 | |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2055 | /* readahead nat pages to be scanned */ |
Chao Yu | 26879fb | 2015-10-12 17:05:59 +0800 | [diff] [blame] | 2056 | ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, |
| 2057 | META_NAT, true); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2058 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2059 | down_read(&nm_i->nat_tree_lock); |
Jaegeuk Kim | a513119 | 2016-01-02 09:19:41 -0800 | [diff] [blame] | 2060 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2061 | while (1) { |
Yunlei He | 923df75 | 2017-11-17 16:13:38 +0800 | [diff] [blame] | 2062 | if (!test_bit_le(NAT_BLOCK_OFFSET(nid), |
| 2063 | nm_i->nat_block_bitmap)) { |
| 2064 | struct page *page = get_current_nat_page(sbi, nid); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2065 | |
Yunlei He | 923df75 | 2017-11-17 16:13:38 +0800 | [diff] [blame] | 2066 | scan_nat_page(sbi, page, nid); |
| 2067 | f2fs_put_page(page, 1); |
| 2068 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2069 | |
| 2070 | nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); |
Chao Yu | cfb271d | 2013-12-05 17:15:22 +0800 | [diff] [blame] | 2071 | if (unlikely(nid >= nm_i->max_nid)) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2072 | nid = 0; |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2073 | |
Chao Yu | a6d494b | 2015-07-24 18:26:26 +0800 | [diff] [blame] | 2074 | if (++i >= FREE_NID_PAGES) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2075 | break; |
| 2076 | } |
| 2077 | |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2078 | /* go to the next free nat pages to find free nids abundantly */ |
| 2079 | nm_i->next_scan_nid = nid; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2080 | |
| 2081 | /* find free nids from current sum_pages */ |
Chao Yu | b561061 | 2017-11-08 17:47:36 +0800 | [diff] [blame] | 2082 | scan_curseg_cache(sbi); |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2083 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2084 | up_read(&nm_i->nat_tree_lock); |
Chao Yu | 2db2388 | 2015-10-12 17:07:33 +0800 | [diff] [blame] | 2085 | |
| 2086 | ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), |
Chao Yu | ea1a29a0 | 2015-10-12 17:08:48 +0800 | [diff] [blame] | 2087 | nm_i->ra_nid_pages, META_NAT, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2088 | } |
| 2089 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2090 | void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) |
| 2091 | { |
| 2092 | mutex_lock(&NM_I(sbi)->build_lock); |
| 2093 | __build_free_nids(sbi, sync, mount); |
| 2094 | mutex_unlock(&NM_I(sbi)->build_lock); |
| 2095 | } |
| 2096 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2097 | /* |
| 2098 | * If this function returns success, caller can obtain a new nid |
| 2099 | * from second parameter of this function. |
| 2100 | * The returned nid could be used ino as well as nid when inode is created. |
| 2101 | */ |
| 2102 | bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) |
| 2103 | { |
| 2104 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2105 | struct free_nid *i = NULL; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2106 | retry: |
Jaegeuk Kim | cb78942 | 2016-04-29 16:29:22 -0700 | [diff] [blame] | 2107 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2108 | if (time_to_inject(sbi, FAULT_ALLOC_NID)) { |
| 2109 | f2fs_show_injection_info(FAULT_ALLOC_NID); |
Jaegeuk Kim | cb78942 | 2016-04-29 16:29:22 -0700 | [diff] [blame] | 2110 | return false; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2111 | } |
Jaegeuk Kim | cb78942 | 2016-04-29 16:29:22 -0700 | [diff] [blame] | 2112 | #endif |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2113 | spin_lock(&nm_i->nid_list_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2114 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2115 | if (unlikely(nm_i->available_nids == 0)) { |
| 2116 | spin_unlock(&nm_i->nid_list_lock); |
| 2117 | return false; |
| 2118 | } |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2119 | |
| 2120 | /* We should not use stale free nids created by build_free_nids */ |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2121 | if (nm_i->nid_cnt[FREE_NID] && !on_build_free_nids(nm_i)) { |
| 2122 | f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); |
| 2123 | i = list_first_entry(&nm_i->free_nid_list, |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2124 | struct free_nid, list); |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2125 | *nid = i->nid; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2126 | |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 2127 | __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2128 | nm_i->available_nids--; |
| 2129 | |
| 2130 | update_free_nid_bitmap(sbi, *nid, false, false); |
| 2131 | |
| 2132 | spin_unlock(&nm_i->nid_list_lock); |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2133 | return true; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2134 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2135 | spin_unlock(&nm_i->nid_list_lock); |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2136 | |
| 2137 | /* Let's scan nat pages and its caches to get free nids */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2138 | build_free_nids(sbi, true, false); |
Jaegeuk Kim | 55008d8 | 2013-04-25 16:05:51 +0900 | [diff] [blame] | 2139 | goto retry; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2140 | } |
| 2141 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 2142 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2143 | * alloc_nid() should be called prior to this function. |
| 2144 | */ |
| 2145 | void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) |
| 2146 | { |
| 2147 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2148 | struct free_nid *i; |
| 2149 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2150 | spin_lock(&nm_i->nid_list_lock); |
Jaegeuk Kim | 8a7ed66 | 2014-02-21 14:29:35 +0900 | [diff] [blame] | 2151 | i = __lookup_free_nid_list(nm_i, nid); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2152 | f2fs_bug_on(sbi, !i); |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 2153 | __remove_free_nid(sbi, i, PREALLOC_NID); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2154 | spin_unlock(&nm_i->nid_list_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 2155 | |
| 2156 | kmem_cache_free(free_nid_slab, i); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2157 | } |
| 2158 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 2159 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2160 | * alloc_nid() should be called prior to this function. |
| 2161 | */ |
| 2162 | void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) |
| 2163 | { |
Jaegeuk Kim | 49952fa | 2013-04-03 22:19:03 +0900 | [diff] [blame] | 2164 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2165 | struct free_nid *i; |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 2166 | bool need_free = false; |
Jaegeuk Kim | 49952fa | 2013-04-03 22:19:03 +0900 | [diff] [blame] | 2167 | |
Jaegeuk Kim | 65985d9 | 2013-08-14 21:57:27 +0900 | [diff] [blame] | 2168 | if (!nid) |
| 2169 | return; |
| 2170 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2171 | spin_lock(&nm_i->nid_list_lock); |
Jaegeuk Kim | 8a7ed66 | 2014-02-21 14:29:35 +0900 | [diff] [blame] | 2172 | i = __lookup_free_nid_list(nm_i, nid); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2173 | f2fs_bug_on(sbi, !i); |
| 2174 | |
Jaegeuk Kim | 6fb03f3 | 2014-04-16 10:47:06 +0900 | [diff] [blame] | 2175 | if (!available_free_memory(sbi, FREE_NIDS)) { |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 2176 | __remove_free_nid(sbi, i, PREALLOC_NID); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 2177 | need_free = true; |
Haicheng Li | 95630cb | 2013-05-06 23:15:41 +0800 | [diff] [blame] | 2178 | } else { |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 2179 | __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); |
Haicheng Li | 95630cb | 2013-05-06 23:15:41 +0800 | [diff] [blame] | 2180 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2181 | |
| 2182 | nm_i->available_nids++; |
| 2183 | |
| 2184 | update_free_nid_bitmap(sbi, nid, true, false); |
| 2185 | |
| 2186 | spin_unlock(&nm_i->nid_list_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 2187 | |
| 2188 | if (need_free) |
| 2189 | kmem_cache_free(free_nid_slab, i); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2190 | } |
| 2191 | |
Chao Yu | 3169658 | 2015-07-28 18:33:46 +0800 | [diff] [blame] | 2192 | int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) |
| 2193 | { |
| 2194 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2195 | struct free_nid *i, *next; |
| 2196 | int nr = nr_shrink; |
| 2197 | |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2198 | if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) |
Jaegeuk Kim | ad4edb8 | 2016-06-16 16:41:49 -0700 | [diff] [blame] | 2199 | return 0; |
| 2200 | |
Chao Yu | 3169658 | 2015-07-28 18:33:46 +0800 | [diff] [blame] | 2201 | if (!mutex_trylock(&nm_i->build_lock)) |
| 2202 | return 0; |
| 2203 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2204 | spin_lock(&nm_i->nid_list_lock); |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2205 | 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] | 2206 | if (nr_shrink <= 0 || |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2207 | nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) |
Chao Yu | 3169658 | 2015-07-28 18:33:46 +0800 | [diff] [blame] | 2208 | break; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2209 | |
Fan Li | 068868f | 2017-10-28 19:03:37 +0800 | [diff] [blame] | 2210 | __remove_free_nid(sbi, i, FREE_NID); |
Chao Yu | 3169658 | 2015-07-28 18:33:46 +0800 | [diff] [blame] | 2211 | kmem_cache_free(free_nid_slab, i); |
| 2212 | nr_shrink--; |
Chao Yu | 3169658 | 2015-07-28 18:33:46 +0800 | [diff] [blame] | 2213 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2214 | spin_unlock(&nm_i->nid_list_lock); |
Chao Yu | 3169658 | 2015-07-28 18:33:46 +0800 | [diff] [blame] | 2215 | mutex_unlock(&nm_i->build_lock); |
| 2216 | |
| 2217 | return nr - nr_shrink; |
| 2218 | } |
| 2219 | |
Chao Yu | 70cfed8 | 2014-08-02 15:26:04 +0800 | [diff] [blame] | 2220 | void recover_inline_xattr(struct inode *inode, struct page *page) |
Chao Yu | 28cdce0 | 2014-03-11 13:37:38 +0800 | [diff] [blame] | 2221 | { |
Chao Yu | 28cdce0 | 2014-03-11 13:37:38 +0800 | [diff] [blame] | 2222 | void *src_addr, *dst_addr; |
| 2223 | size_t inline_size; |
| 2224 | struct page *ipage; |
| 2225 | struct f2fs_inode *ri; |
| 2226 | |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 2227 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 2228 | f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); |
Chao Yu | 28cdce0 | 2014-03-11 13:37:38 +0800 | [diff] [blame] | 2229 | |
Jaegeuk Kim | e3b4d43 | 2014-08-07 23:45:42 -0700 | [diff] [blame] | 2230 | ri = F2FS_INODE(page); |
Yunlei He | 4f76d6a | 2018-01-03 18:03:04 +0800 | [diff] [blame] | 2231 | if (ri->i_inline & F2FS_INLINE_XATTR) { |
| 2232 | set_inode_flag(inode, FI_INLINE_XATTR); |
| 2233 | } else { |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 2234 | clear_inode_flag(inode, FI_INLINE_XATTR); |
Jaegeuk Kim | e3b4d43 | 2014-08-07 23:45:42 -0700 | [diff] [blame] | 2235 | goto update_inode; |
| 2236 | } |
| 2237 | |
Chao Yu | 50ffaa9 | 2017-09-06 21:59:50 +0800 | [diff] [blame] | 2238 | dst_addr = inline_xattr_addr(inode, ipage); |
| 2239 | src_addr = inline_xattr_addr(inode, page); |
Chao Yu | 28cdce0 | 2014-03-11 13:37:38 +0800 | [diff] [blame] | 2240 | inline_size = inline_xattr_size(inode); |
| 2241 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 2242 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
Chao Yu | 28cdce0 | 2014-03-11 13:37:38 +0800 | [diff] [blame] | 2243 | memcpy(dst_addr, src_addr, inline_size); |
Jaegeuk Kim | e3b4d43 | 2014-08-07 23:45:42 -0700 | [diff] [blame] | 2244 | update_inode: |
Chao Yu | 28cdce0 | 2014-03-11 13:37:38 +0800 | [diff] [blame] | 2245 | update_inode(inode, ipage); |
| 2246 | f2fs_put_page(ipage, 1); |
| 2247 | } |
| 2248 | |
Sheng Yong | 8933908 | 2017-11-22 18:23:40 +0800 | [diff] [blame] | 2249 | int recover_xattr_data(struct inode *inode, struct page *page) |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2250 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 2251 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2252 | nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; |
Yunlei He | e21d43c | 2017-07-18 09:48:12 +0800 | [diff] [blame] | 2253 | nid_t new_xnid; |
| 2254 | struct dnode_of_data dn; |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2255 | struct node_info ni; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2256 | struct page *xpage; |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2257 | |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2258 | if (!prev_xnid) |
| 2259 | goto recover_xnid; |
| 2260 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2261 | /* 1: invalidate the previous xattr nid */ |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2262 | get_node_info(sbi, prev_xnid, &ni); |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2263 | invalidate_blocks(sbi, ni.blk_addr); |
Chao Yu | d9bfbbb | 2017-07-06 01:11:31 +0800 | [diff] [blame] | 2264 | dec_valid_node_count(sbi, inode, false); |
Jaegeuk Kim | 479f40c | 2014-03-20 21:52:53 +0900 | [diff] [blame] | 2265 | set_node_addr(sbi, &ni, NULL_ADDR, false); |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2266 | |
| 2267 | recover_xnid: |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2268 | /* 2: update xattr nid in inode */ |
Yunlei He | e21d43c | 2017-07-18 09:48:12 +0800 | [diff] [blame] | 2269 | if (!alloc_nid(sbi, &new_xnid)) |
| 2270 | return -ENOSPC; |
| 2271 | |
| 2272 | set_new_dnode(&dn, inode, NULL, NULL, new_xnid); |
| 2273 | xpage = new_node_page(&dn, XATTR_NODE_OFFSET); |
| 2274 | if (IS_ERR(xpage)) { |
| 2275 | alloc_nid_failed(sbi, new_xnid); |
| 2276 | return PTR_ERR(xpage); |
| 2277 | } |
| 2278 | |
| 2279 | alloc_nid_done(sbi, new_xnid); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2280 | update_inode_page(inode); |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2281 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2282 | /* 3: update and set xattr node page dirty */ |
Yunlei He | e21d43c | 2017-07-18 09:48:12 +0800 | [diff] [blame] | 2283 | memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2284 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2285 | set_page_dirty(xpage); |
| 2286 | f2fs_put_page(xpage, 1); |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2287 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2288 | return 0; |
Jaegeuk Kim | abb2366 | 2014-01-28 12:25:06 +0900 | [diff] [blame] | 2289 | } |
| 2290 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2291 | int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) |
| 2292 | { |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 2293 | struct f2fs_inode *src, *dst; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2294 | nid_t ino = ino_of_node(page); |
| 2295 | struct node_info old_ni, new_ni; |
| 2296 | struct page *ipage; |
| 2297 | |
Jaegeuk Kim | e8271fa | 2014-04-18 15:21:04 +0900 | [diff] [blame] | 2298 | get_node_info(sbi, ino, &old_ni); |
| 2299 | |
| 2300 | if (unlikely(old_ni.blk_addr != NULL_ADDR)) |
| 2301 | return -EINVAL; |
Jaegeuk Kim | e8ea9b3 | 2016-09-09 16:59:39 -0700 | [diff] [blame] | 2302 | retry: |
Jaegeuk Kim | 300e129 | 2016-04-29 16:11:53 -0700 | [diff] [blame] | 2303 | ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); |
Jaegeuk Kim | e8ea9b3 | 2016-09-09 16:59:39 -0700 | [diff] [blame] | 2304 | if (!ipage) { |
| 2305 | congestion_wait(BLK_RW_ASYNC, HZ/50); |
| 2306 | goto retry; |
| 2307 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2308 | |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 2309 | /* Should not use this inode from free nid list */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2310 | remove_free_nid(sbi, ino); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2311 | |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 2312 | if (!PageUptodate(ipage)) |
| 2313 | SetPageUptodate(ipage); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2314 | fill_node_footer(ipage, ino, ino, 0, true); |
| 2315 | |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 2316 | src = F2FS_INODE(page); |
| 2317 | dst = F2FS_INODE(ipage); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2318 | |
Jaegeuk Kim | 58bfaf4 | 2013-12-26 16:30:41 +0900 | [diff] [blame] | 2319 | memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); |
| 2320 | dst->i_size = 0; |
| 2321 | dst->i_blocks = cpu_to_le64(1); |
| 2322 | dst->i_links = cpu_to_le32(1); |
| 2323 | dst->i_xattr_nid = 0; |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame] | 2324 | dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); |
Chao Yu | 5647b30 | 2017-07-26 00:01:41 +0800 | [diff] [blame] | 2325 | if (dst->i_inline & F2FS_EXTRA_ATTR) { |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame] | 2326 | dst->i_extra_isize = src->i_extra_isize; |
Chao Yu | 50ffaa9 | 2017-09-06 21:59:50 +0800 | [diff] [blame] | 2327 | |
| 2328 | if (f2fs_sb_has_flexible_inline_xattr(sbi->sb) && |
| 2329 | F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), |
| 2330 | i_inline_xattr_size)) |
| 2331 | dst->i_inline_xattr_size = src->i_inline_xattr_size; |
| 2332 | |
Chao Yu | 5647b30 | 2017-07-26 00:01:41 +0800 | [diff] [blame] | 2333 | if (f2fs_sb_has_project_quota(sbi->sb) && |
| 2334 | F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), |
| 2335 | i_projid)) |
| 2336 | dst->i_projid = src->i_projid; |
| 2337 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2338 | |
| 2339 | new_ni = old_ni; |
| 2340 | new_ni.ino = ino; |
| 2341 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 2342 | if (unlikely(inc_valid_node_count(sbi, NULL, true))) |
Jaegeuk Kim | 65e5cd0 | 2013-05-14 15:47:43 +0900 | [diff] [blame] | 2343 | WARN_ON(1); |
Jaegeuk Kim | 479f40c | 2014-03-20 21:52:53 +0900 | [diff] [blame] | 2344 | set_node_addr(sbi, &new_ni, NEW_ADDR, false); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2345 | inc_valid_inode_count(sbi); |
Jaegeuk Kim | 617deb8 | 2014-08-07 17:04:24 -0700 | [diff] [blame] | 2346 | set_page_dirty(ipage); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2347 | f2fs_put_page(ipage, 1); |
| 2348 | return 0; |
| 2349 | } |
| 2350 | |
Yunlei He | c804fcf | 2017-12-06 11:31:29 +0800 | [diff] [blame] | 2351 | void restore_node_summary(struct f2fs_sb_info *sbi, |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2352 | unsigned int segno, struct f2fs_summary_block *sum) |
| 2353 | { |
| 2354 | struct f2fs_node *rn; |
| 2355 | struct f2fs_summary *sum_entry; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2356 | block_t addr; |
Chao Yu | 9ecf4b8 | 2014-12-18 18:29:05 +0800 | [diff] [blame] | 2357 | int i, idx, last_offset, nrpages; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2358 | |
| 2359 | /* scan the node segment */ |
| 2360 | last_offset = sbi->blocks_per_seg; |
| 2361 | addr = START_BLOCK(sbi, segno); |
| 2362 | sum_entry = &sum->entries[0]; |
| 2363 | |
Chao Yu | 9ecf4b8 | 2014-12-18 18:29:05 +0800 | [diff] [blame] | 2364 | for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2365 | nrpages = min(last_offset - i, BIO_MAX_PAGES); |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 2366 | |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 2367 | /* readahead node pages */ |
Chao Yu | 26879fb | 2015-10-12 17:05:59 +0800 | [diff] [blame] | 2368 | ra_meta_pages(sbi, addr, nrpages, META_POR, true); |
Jaegeuk Kim | 393ff91 | 2013-03-08 21:29:23 +0900 | [diff] [blame] | 2369 | |
Chao Yu | 9ecf4b8 | 2014-12-18 18:29:05 +0800 | [diff] [blame] | 2370 | for (idx = addr; idx < addr + nrpages; idx++) { |
Chao Yu | 2b94700 | 2015-10-12 17:04:21 +0800 | [diff] [blame] | 2371 | struct page *page = get_tmp_page(sbi, idx); |
Chao Yu | 9af0ff1 | 2013-11-22 15:48:54 +0800 | [diff] [blame] | 2372 | |
Chao Yu | 9ecf4b8 | 2014-12-18 18:29:05 +0800 | [diff] [blame] | 2373 | rn = F2FS_NODE(page); |
| 2374 | sum_entry->nid = rn->footer.nid; |
| 2375 | sum_entry->version = 0; |
| 2376 | sum_entry->ofs_in_node = 0; |
| 2377 | sum_entry++; |
| 2378 | f2fs_put_page(page, 1); |
Chao Yu | 9af0ff1 | 2013-11-22 15:48:54 +0800 | [diff] [blame] | 2379 | } |
Chao Yu | bac4eef | 2014-05-27 08:41:07 +0800 | [diff] [blame] | 2380 | |
Chao Yu | 9ecf4b8 | 2014-12-18 18:29:05 +0800 | [diff] [blame] | 2381 | invalidate_mapping_pages(META_MAPPING(sbi), addr, |
Chao Yu | bac4eef | 2014-05-27 08:41:07 +0800 | [diff] [blame] | 2382 | addr + nrpages); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2383 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2384 | } |
| 2385 | |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2386 | static void remove_nats_in_journal(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2387 | { |
| 2388 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2389 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2390 | struct f2fs_journal *journal = curseg->journal; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2391 | int i; |
| 2392 | |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2393 | down_write(&curseg->journal_rwsem); |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2394 | for (i = 0; i < nats_in_cursum(journal); i++) { |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2395 | struct nat_entry *ne; |
| 2396 | struct f2fs_nat_entry raw_ne; |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2397 | nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2398 | |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2399 | raw_ne = nat_in_journal(journal, i); |
Jaegeuk Kim | 9be32d7 | 2014-12-05 10:39:49 -0800 | [diff] [blame] | 2400 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2401 | ne = __lookup_nat_cache(nm_i, nid); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2402 | if (!ne) { |
Yunlei He | 45d6e70 | 2017-11-10 13:36:51 -0800 | [diff] [blame] | 2403 | ne = __alloc_nat_entry(nid, true); |
| 2404 | __init_nat_entry(nm_i, ne, &raw_ne, true); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2405 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2406 | |
| 2407 | /* |
| 2408 | * if a free nat in journal has not been used after last |
| 2409 | * checkpoint, we should remove it from available nids, |
| 2410 | * since later we will add it again. |
| 2411 | */ |
| 2412 | if (!get_nat_flag(ne, IS_DIRTY) && |
| 2413 | le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { |
| 2414 | spin_lock(&nm_i->nid_list_lock); |
| 2415 | nm_i->available_nids--; |
| 2416 | spin_unlock(&nm_i->nid_list_lock); |
| 2417 | } |
| 2418 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2419 | __set_nat_cache_dirty(nm_i, ne); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2420 | } |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2421 | update_nats_in_cursum(journal, -i); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2422 | up_write(&curseg->journal_rwsem); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2423 | } |
| 2424 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2425 | static void __adjust_nat_entry_set(struct nat_entry_set *nes, |
| 2426 | struct list_head *head, int max) |
| 2427 | { |
| 2428 | struct nat_entry_set *cur; |
| 2429 | |
| 2430 | if (nes->entry_cnt >= max) |
| 2431 | goto add_out; |
| 2432 | |
| 2433 | list_for_each_entry(cur, head, set_list) { |
| 2434 | if (cur->entry_cnt >= nes->entry_cnt) { |
| 2435 | list_add(&nes->set_list, cur->set_list.prev); |
| 2436 | return; |
| 2437 | } |
| 2438 | } |
| 2439 | add_out: |
| 2440 | list_add_tail(&nes->set_list, head); |
| 2441 | } |
| 2442 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2443 | static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, |
| 2444 | struct page *page) |
| 2445 | { |
| 2446 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2447 | unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; |
| 2448 | struct f2fs_nat_block *nat_blk = page_address(page); |
| 2449 | int valid = 0; |
Fan Li | 1033eee | 2017-10-30 15:19:48 +0800 | [diff] [blame] | 2450 | int i = 0; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2451 | |
| 2452 | if (!enabled_nat_bits(sbi, NULL)) |
| 2453 | return; |
| 2454 | |
Fan Li | 1033eee | 2017-10-30 15:19:48 +0800 | [diff] [blame] | 2455 | if (nat_index == 0) { |
| 2456 | valid = 1; |
| 2457 | i = 1; |
| 2458 | } |
| 2459 | for (; i < NAT_ENTRY_PER_BLOCK; i++) { |
| 2460 | if (nat_blk->entries[i].block_addr != NULL_ADDR) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2461 | valid++; |
| 2462 | } |
| 2463 | if (valid == 0) { |
| 2464 | __set_bit_le(nat_index, nm_i->empty_nat_bits); |
| 2465 | __clear_bit_le(nat_index, nm_i->full_nat_bits); |
| 2466 | return; |
| 2467 | } |
| 2468 | |
| 2469 | __clear_bit_le(nat_index, nm_i->empty_nat_bits); |
| 2470 | if (valid == NAT_ENTRY_PER_BLOCK) |
| 2471 | __set_bit_le(nat_index, nm_i->full_nat_bits); |
| 2472 | else |
| 2473 | __clear_bit_le(nat_index, nm_i->full_nat_bits); |
| 2474 | } |
| 2475 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2476 | static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2477 | struct nat_entry_set *set, struct cp_control *cpc) |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2478 | { |
| 2479 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2480 | struct f2fs_journal *journal = curseg->journal; |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2481 | nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; |
| 2482 | bool to_journal = true; |
| 2483 | struct f2fs_nat_block *nat_blk; |
| 2484 | struct nat_entry *ne, *cur; |
| 2485 | struct page *page = NULL; |
| 2486 | |
| 2487 | /* |
| 2488 | * there are two steps to flush nat entries: |
| 2489 | * #1, flush nat entries to journal in current hot data summary block. |
| 2490 | * #2, flush nat entries to nat page. |
| 2491 | */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2492 | if (enabled_nat_bits(sbi, cpc) || |
| 2493 | !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2494 | to_journal = false; |
| 2495 | |
| 2496 | if (to_journal) { |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2497 | down_write(&curseg->journal_rwsem); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2498 | } else { |
| 2499 | page = get_next_nat_page(sbi, start_nid); |
| 2500 | nat_blk = page_address(page); |
| 2501 | f2fs_bug_on(sbi, !nat_blk); |
| 2502 | } |
| 2503 | |
| 2504 | /* flush dirty nats in nat entry set */ |
| 2505 | list_for_each_entry_safe(ne, cur, &set->entry_list, list) { |
| 2506 | struct f2fs_nat_entry *raw_ne; |
| 2507 | nid_t nid = nat_get_nid(ne); |
| 2508 | int offset; |
| 2509 | |
Chao Yu | 86aadea | 2017-06-05 18:29:08 +0800 | [diff] [blame] | 2510 | f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2511 | |
| 2512 | if (to_journal) { |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2513 | offset = lookup_journal_in_cursum(journal, |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2514 | NAT_JOURNAL, nid, 1); |
| 2515 | f2fs_bug_on(sbi, offset < 0); |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2516 | raw_ne = &nat_in_journal(journal, offset); |
| 2517 | nid_in_journal(journal, offset) = cpu_to_le32(nid); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2518 | } else { |
| 2519 | raw_ne = &nat_blk->entries[nid - start_nid]; |
| 2520 | } |
| 2521 | raw_nat_from_node_info(raw_ne, &ne->ni); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2522 | nat_reset_flag(ne); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2523 | __clear_nat_cache_dirty(NM_I(sbi), set, ne); |
| 2524 | if (nat_get_blkaddr(ne) == NULL_ADDR) { |
LiFan | 4e68a15 | 2017-11-22 16:07:23 +0800 | [diff] [blame] | 2525 | add_free_nid(sbi, nid, false, true); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2526 | } else { |
| 2527 | spin_lock(&NM_I(sbi)->nid_list_lock); |
| 2528 | update_free_nid_bitmap(sbi, nid, false, false); |
| 2529 | spin_unlock(&NM_I(sbi)->nid_list_lock); |
| 2530 | } |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2531 | } |
| 2532 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2533 | if (to_journal) { |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2534 | up_write(&curseg->journal_rwsem); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2535 | } else { |
| 2536 | __update_nat_bits(sbi, start_nid, page); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2537 | f2fs_put_page(page, 1); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2538 | } |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2539 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2540 | /* Allow dirty nats by node block allocation in write_begin */ |
| 2541 | if (!set->entry_cnt) { |
| 2542 | radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); |
| 2543 | kmem_cache_free(nat_entry_set_slab, set); |
| 2544 | } |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2545 | } |
| 2546 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 2547 | /* |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2548 | * This function is called during the checkpointing process. |
| 2549 | */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2550 | 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] | 2551 | { |
| 2552 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2553 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2554 | struct f2fs_journal *journal = curseg->journal; |
Jaegeuk Kim | 7aed0d4 | 2015-01-07 10:47:57 -0800 | [diff] [blame] | 2555 | struct nat_entry_set *setvec[SETVEC_SIZE]; |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2556 | struct nat_entry_set *set, *tmp; |
| 2557 | unsigned int found; |
| 2558 | nid_t set_idx = 0; |
| 2559 | LIST_HEAD(sets); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2560 | |
Changman Lee | 20d047c | 2014-11-25 12:44:23 +0900 | [diff] [blame] | 2561 | if (!nm_i->dirty_nat_cnt) |
| 2562 | return; |
Jaegeuk Kim | a513119 | 2016-01-02 09:19:41 -0800 | [diff] [blame] | 2563 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2564 | down_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | a513119 | 2016-01-02 09:19:41 -0800 | [diff] [blame] | 2565 | |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2566 | /* |
| 2567 | * if there are no enough space in journal to store dirty nat |
| 2568 | * entries, remove all entries from journal and merge them |
| 2569 | * into nat entry set. |
| 2570 | */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2571 | if (enabled_nat_bits(sbi, cpc) || |
| 2572 | !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2573 | remove_nats_in_journal(sbi); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2574 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2575 | while ((found = __gang_lookup_nat_set(nm_i, |
Jaegeuk Kim | 7aed0d4 | 2015-01-07 10:47:57 -0800 | [diff] [blame] | 2576 | set_idx, SETVEC_SIZE, setvec))) { |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2577 | unsigned idx; |
| 2578 | set_idx = setvec[found - 1]->set + 1; |
| 2579 | for (idx = 0; idx < found; idx++) |
| 2580 | __adjust_nat_entry_set(setvec[idx], &sets, |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2581 | MAX_NAT_JENTRIES(journal)); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2582 | } |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2583 | |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2584 | /* flush dirty nats in nat entry set */ |
| 2585 | list_for_each_entry_safe(set, tmp, &sets, set_list) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2586 | __flush_nat_entry_set(sbi, set, cpc); |
Jaegeuk Kim | 309cc2b | 2014-09-22 11:40:48 -0700 | [diff] [blame] | 2587 | |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2588 | up_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2589 | /* Allow dirty nats by node block allocation in write_begin */ |
| 2590 | } |
Jaegeuk Kim | a513119 | 2016-01-02 09:19:41 -0800 | [diff] [blame] | 2591 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2592 | static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) |
| 2593 | { |
| 2594 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| 2595 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2596 | unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; |
| 2597 | unsigned int i; |
| 2598 | __u64 cp_ver = cur_cp_version(ckpt); |
| 2599 | block_t nat_bits_addr; |
| 2600 | |
| 2601 | if (!enabled_nat_bits(sbi, NULL)) |
| 2602 | return 0; |
| 2603 | |
| 2604 | nm_i->nat_bits_blocks = F2FS_BYTES_TO_BLK((nat_bits_bytes << 1) + 8 + |
| 2605 | F2FS_BLKSIZE - 1); |
Chao Yu | e585ca2 | 2017-11-30 19:28:17 +0800 | [diff] [blame] | 2606 | nm_i->nat_bits = f2fs_kzalloc(sbi, |
| 2607 | nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2608 | if (!nm_i->nat_bits) |
| 2609 | return -ENOMEM; |
| 2610 | |
| 2611 | nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - |
| 2612 | nm_i->nat_bits_blocks; |
| 2613 | for (i = 0; i < nm_i->nat_bits_blocks; i++) { |
| 2614 | struct page *page = get_meta_page(sbi, nat_bits_addr++); |
| 2615 | |
| 2616 | memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), |
| 2617 | page_address(page), F2FS_BLKSIZE); |
| 2618 | f2fs_put_page(page, 1); |
| 2619 | } |
| 2620 | |
| 2621 | cp_ver |= (cur_cp_crc(ckpt) << 32); |
| 2622 | if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { |
| 2623 | disable_nat_bits(sbi, true); |
| 2624 | return 0; |
| 2625 | } |
| 2626 | |
| 2627 | nm_i->full_nat_bits = nm_i->nat_bits + 8; |
| 2628 | nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; |
| 2629 | |
| 2630 | f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); |
| 2631 | return 0; |
| 2632 | } |
| 2633 | |
Hou Pengyang | 61c356c | 2017-05-17 02:48:48 +0000 | [diff] [blame] | 2634 | static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2635 | { |
| 2636 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2637 | unsigned int i = 0; |
| 2638 | nid_t nid, last_nid; |
| 2639 | |
| 2640 | if (!enabled_nat_bits(sbi, NULL)) |
| 2641 | return; |
| 2642 | |
| 2643 | for (i = 0; i < nm_i->nat_blocks; i++) { |
| 2644 | i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); |
| 2645 | if (i >= nm_i->nat_blocks) |
| 2646 | break; |
| 2647 | |
| 2648 | __set_bit_le(i, nm_i->nat_block_bitmap); |
| 2649 | |
| 2650 | nid = i * NAT_ENTRY_PER_BLOCK; |
Fan Li | 51cb399 | 2017-11-02 11:02:52 +0800 | [diff] [blame] | 2651 | last_nid = nid + NAT_ENTRY_PER_BLOCK; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2652 | |
| 2653 | spin_lock(&NM_I(sbi)->nid_list_lock); |
| 2654 | for (; nid < last_nid; nid++) |
| 2655 | update_free_nid_bitmap(sbi, nid, true, true); |
| 2656 | spin_unlock(&NM_I(sbi)->nid_list_lock); |
| 2657 | } |
| 2658 | |
| 2659 | for (i = 0; i < nm_i->nat_blocks; i++) { |
| 2660 | i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); |
| 2661 | if (i >= nm_i->nat_blocks) |
| 2662 | break; |
| 2663 | |
| 2664 | __set_bit_le(i, nm_i->nat_block_bitmap); |
| 2665 | } |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2666 | } |
| 2667 | |
| 2668 | static int init_node_manager(struct f2fs_sb_info *sbi) |
| 2669 | { |
| 2670 | struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); |
| 2671 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2672 | unsigned char *version_bitmap; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2673 | unsigned int nat_segs; |
| 2674 | int err; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2675 | |
| 2676 | nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); |
| 2677 | |
| 2678 | /* segment_count_nat includes pair segment so divide to 2. */ |
| 2679 | nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2680 | nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); |
| 2681 | nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; |
Jaegeuk Kim | 7ee0eea | 2014-04-18 11:14:37 +0900 | [diff] [blame] | 2682 | |
Jaegeuk Kim | b63da15 | 2014-02-17 12:44:20 +0900 | [diff] [blame] | 2683 | /* not used nids: 0, node, meta, (and root counted as valid node) */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2684 | 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] | 2685 | sbi->nquota_files - F2FS_RESERVED_NODE_NUM; |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2686 | nm_i->nid_cnt[FREE_NID] = 0; |
| 2687 | nm_i->nid_cnt[PREALLOC_NID] = 0; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2688 | nm_i->nat_cnt = 0; |
Jaegeuk Kim | cdfc41c | 2014-03-19 13:31:37 +0900 | [diff] [blame] | 2689 | nm_i->ram_thresh = DEF_RAM_THRESHOLD; |
Chao Yu | ea1a29a0 | 2015-10-12 17:08:48 +0800 | [diff] [blame] | 2690 | nm_i->ra_nid_pages = DEF_RA_NID_PAGES; |
Chao Yu | 2304cb0 | 2016-01-18 18:32:58 +0800 | [diff] [blame] | 2691 | nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2692 | |
Jaegeuk Kim | 8a7ed66 | 2014-02-21 14:29:35 +0900 | [diff] [blame] | 2693 | INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2694 | INIT_LIST_HEAD(&nm_i->free_nid_list); |
Jaegeuk Kim | 769ec6e | 2014-12-03 20:47:26 -0800 | [diff] [blame] | 2695 | INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); |
| 2696 | INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2697 | INIT_LIST_HEAD(&nm_i->nat_entries); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2698 | |
| 2699 | mutex_init(&nm_i->build_lock); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2700 | spin_lock_init(&nm_i->nid_list_lock); |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2701 | init_rwsem(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2702 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2703 | 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] | 2704 | nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2705 | version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); |
| 2706 | if (!version_bitmap) |
| 2707 | return -EFAULT; |
| 2708 | |
Alexandru Gheorghiu | 79b5793 | 2013-03-28 02:24:53 +0200 | [diff] [blame] | 2709 | nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, |
| 2710 | GFP_KERNEL); |
| 2711 | if (!nm_i->nat_bitmap) |
| 2712 | return -ENOMEM; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2713 | |
| 2714 | err = __get_nat_bitmaps(sbi); |
| 2715 | if (err) |
| 2716 | return err; |
| 2717 | |
| 2718 | #ifdef CONFIG_F2FS_CHECK_FS |
| 2719 | nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, |
| 2720 | GFP_KERNEL); |
| 2721 | if (!nm_i->nat_bitmap_mir) |
| 2722 | return -ENOMEM; |
| 2723 | #endif |
| 2724 | |
| 2725 | return 0; |
| 2726 | } |
| 2727 | |
| 2728 | static int init_free_nid_cache(struct f2fs_sb_info *sbi) |
| 2729 | { |
| 2730 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2731 | |
Chao Yu | ead5259 | 2017-11-30 19:28:18 +0800 | [diff] [blame] | 2732 | nm_i->free_nid_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks * |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2733 | NAT_ENTRY_BITMAP_SIZE, GFP_KERNEL); |
| 2734 | if (!nm_i->free_nid_bitmap) |
| 2735 | return -ENOMEM; |
| 2736 | |
Chao Yu | ead5259 | 2017-11-30 19:28:18 +0800 | [diff] [blame] | 2737 | 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] | 2738 | GFP_KERNEL); |
| 2739 | if (!nm_i->nat_block_bitmap) |
| 2740 | return -ENOMEM; |
| 2741 | |
Chao Yu | ead5259 | 2017-11-30 19:28:18 +0800 | [diff] [blame] | 2742 | nm_i->free_nid_count = f2fs_kvzalloc(sbi, nm_i->nat_blocks * |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2743 | sizeof(unsigned short), GFP_KERNEL); |
| 2744 | if (!nm_i->free_nid_count) |
| 2745 | return -ENOMEM; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2746 | return 0; |
| 2747 | } |
| 2748 | |
| 2749 | int build_node_manager(struct f2fs_sb_info *sbi) |
| 2750 | { |
| 2751 | int err; |
| 2752 | |
Chao Yu | e585ca2 | 2017-11-30 19:28:17 +0800 | [diff] [blame] | 2753 | sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), |
| 2754 | GFP_KERNEL); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2755 | if (!sbi->nm_info) |
| 2756 | return -ENOMEM; |
| 2757 | |
| 2758 | err = init_node_manager(sbi); |
| 2759 | if (err) |
| 2760 | return err; |
| 2761 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2762 | err = init_free_nid_cache(sbi); |
| 2763 | if (err) |
| 2764 | return err; |
| 2765 | |
| 2766 | /* load free nid status from nat_bits table */ |
| 2767 | load_free_nid_bitmap(sbi); |
| 2768 | |
| 2769 | build_free_nids(sbi, true, true); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2770 | return 0; |
| 2771 | } |
| 2772 | |
| 2773 | void destroy_node_manager(struct f2fs_sb_info *sbi) |
| 2774 | { |
| 2775 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
| 2776 | struct free_nid *i, *next_i; |
| 2777 | struct nat_entry *natvec[NATVEC_SIZE]; |
Jaegeuk Kim | 7aed0d4 | 2015-01-07 10:47:57 -0800 | [diff] [blame] | 2778 | struct nat_entry_set *setvec[SETVEC_SIZE]; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2779 | nid_t nid = 0; |
| 2780 | unsigned int found; |
| 2781 | |
| 2782 | if (!nm_i) |
| 2783 | return; |
| 2784 | |
| 2785 | /* destroy free nid list */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2786 | spin_lock(&nm_i->nid_list_lock); |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2787 | 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] | 2788 | __remove_free_nid(sbi, i, FREE_NID); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2789 | spin_unlock(&nm_i->nid_list_lock); |
Chao Yu | cf0ee0f | 2014-04-02 08:55:00 +0800 | [diff] [blame] | 2790 | kmem_cache_free(free_nid_slab, i); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2791 | spin_lock(&nm_i->nid_list_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2792 | } |
Chao Yu | 84af6ae | 2017-09-29 13:59:35 +0800 | [diff] [blame] | 2793 | f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); |
| 2794 | f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); |
| 2795 | f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2796 | spin_unlock(&nm_i->nid_list_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2797 | |
| 2798 | /* destroy nat cache */ |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2799 | down_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2800 | while ((found = __gang_lookup_nat_cache(nm_i, |
| 2801 | nid, NATVEC_SIZE, natvec))) { |
| 2802 | unsigned idx; |
Jaegeuk Kim | 7aed0d4 | 2015-01-07 10:47:57 -0800 | [diff] [blame] | 2803 | |
Gu Zheng | b6ce391 | 2014-03-07 18:43:24 +0800 | [diff] [blame] | 2804 | nid = nat_get_nid(natvec[found - 1]) + 1; |
| 2805 | for (idx = 0; idx < found; idx++) |
| 2806 | __del_from_nat_cache(nm_i, natvec[idx]); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2807 | } |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 2808 | f2fs_bug_on(sbi, nm_i->nat_cnt); |
Jaegeuk Kim | 7aed0d4 | 2015-01-07 10:47:57 -0800 | [diff] [blame] | 2809 | |
| 2810 | /* destroy nat set cache */ |
| 2811 | nid = 0; |
| 2812 | while ((found = __gang_lookup_nat_set(nm_i, |
| 2813 | nid, SETVEC_SIZE, setvec))) { |
| 2814 | unsigned idx; |
| 2815 | |
| 2816 | nid = setvec[found - 1]->set + 1; |
| 2817 | for (idx = 0; idx < found; idx++) { |
| 2818 | /* entry_cnt is not zero, when cp_error was occurred */ |
| 2819 | f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); |
| 2820 | radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); |
| 2821 | kmem_cache_free(nat_entry_set_slab, setvec[idx]); |
| 2822 | } |
| 2823 | } |
Jaegeuk Kim | b873b79 | 2016-08-04 11:38:25 -0700 | [diff] [blame] | 2824 | up_write(&nm_i->nat_tree_lock); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2825 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2826 | kvfree(nm_i->nat_block_bitmap); |
| 2827 | kvfree(nm_i->free_nid_bitmap); |
| 2828 | kvfree(nm_i->free_nid_count); |
| 2829 | |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2830 | kfree(nm_i->nat_bitmap); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2831 | kfree(nm_i->nat_bits); |
| 2832 | #ifdef CONFIG_F2FS_CHECK_FS |
| 2833 | kfree(nm_i->nat_bitmap_mir); |
| 2834 | #endif |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2835 | sbi->nm_info = NULL; |
| 2836 | kfree(nm_i); |
| 2837 | } |
| 2838 | |
Namjae Jeon | 6e6093a | 2013-01-17 00:08:30 +0900 | [diff] [blame] | 2839 | int __init create_node_manager_caches(void) |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2840 | { |
| 2841 | nat_entry_slab = f2fs_kmem_cache_create("nat_entry", |
Gu Zheng | e8512d2 | 2014-03-07 18:43:28 +0800 | [diff] [blame] | 2842 | sizeof(struct nat_entry)); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2843 | if (!nat_entry_slab) |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2844 | goto fail; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2845 | |
| 2846 | free_nid_slab = f2fs_kmem_cache_create("free_nid", |
Gu Zheng | e8512d2 | 2014-03-07 18:43:28 +0800 | [diff] [blame] | 2847 | sizeof(struct free_nid)); |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2848 | if (!free_nid_slab) |
Markus Elfring | ce3e6d2 | 2014-11-24 15:52:00 +0100 | [diff] [blame] | 2849 | goto destroy_nat_entry; |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2850 | |
| 2851 | nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", |
| 2852 | sizeof(struct nat_entry_set)); |
| 2853 | if (!nat_entry_set_slab) |
Markus Elfring | ce3e6d2 | 2014-11-24 15:52:00 +0100 | [diff] [blame] | 2854 | goto destroy_free_nid; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2855 | return 0; |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2856 | |
Markus Elfring | ce3e6d2 | 2014-11-24 15:52:00 +0100 | [diff] [blame] | 2857 | destroy_free_nid: |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2858 | kmem_cache_destroy(free_nid_slab); |
Markus Elfring | ce3e6d2 | 2014-11-24 15:52:00 +0100 | [diff] [blame] | 2859 | destroy_nat_entry: |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2860 | kmem_cache_destroy(nat_entry_slab); |
| 2861 | fail: |
| 2862 | return -ENOMEM; |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2863 | } |
| 2864 | |
| 2865 | void destroy_node_manager_caches(void) |
| 2866 | { |
Chao Yu | aec7138 | 2014-06-24 09:18:20 +0800 | [diff] [blame] | 2867 | kmem_cache_destroy(nat_entry_set_slab); |
Jaegeuk Kim | e05df3b | 2012-11-02 17:08:50 +0900 | [diff] [blame] | 2868 | kmem_cache_destroy(free_nid_slab); |
| 2869 | kmem_cache_destroy(nat_entry_slab); |
| 2870 | } |