Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1 | /* |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2 | * fs/f2fs/segment.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/bio.h> |
| 14 | #include <linux/blkdev.h> |
Geert Uytterhoeven | 690e4a3 | 2012-12-19 22:19:30 +0100 | [diff] [blame] | 15 | #include <linux/prefetch.h> |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 16 | #include <linux/kthread.h> |
Chao Yu | 74de593 | 2013-11-22 09:09:59 +0800 | [diff] [blame] | 17 | #include <linux/swap.h> |
Jaegeuk Kim | 60b99b4 | 2015-10-05 14:49:57 -0700 | [diff] [blame] | 18 | #include <linux/timer.h> |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 19 | |
| 20 | #include "f2fs.h" |
| 21 | #include "segment.h" |
| 22 | #include "node.h" |
Jaegeuk Kim | 9e4ded3 | 2014-12-17 19:58:58 -0800 | [diff] [blame] | 23 | #include "trace.h" |
Namjae Jeon | 6ec178d | 2013-04-23 17:51:43 +0900 | [diff] [blame] | 24 | #include <trace/events/f2fs.h> |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 25 | |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 26 | #define __reverse_ffz(x) __reverse_ffs(~(x)) |
| 27 | |
Jaegeuk Kim | 7fd9e54 | 2013-11-15 13:55:58 +0900 | [diff] [blame] | 28 | static struct kmem_cache *discard_entry_slab; |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 29 | static struct kmem_cache *sit_entry_set_slab; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 30 | static struct kmem_cache *inmem_entry_slab; |
Jaegeuk Kim | 7fd9e54 | 2013-11-15 13:55:58 +0900 | [diff] [blame] | 31 | |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 32 | static unsigned long __reverse_ulong(unsigned char *str) |
| 33 | { |
| 34 | unsigned long tmp = 0; |
| 35 | int shift = 24, idx = 0; |
| 36 | |
| 37 | #if BITS_PER_LONG == 64 |
| 38 | shift = 56; |
| 39 | #endif |
| 40 | while (shift >= 0) { |
| 41 | tmp |= (unsigned long)str[idx++] << shift; |
| 42 | shift -= BITS_PER_BYTE; |
| 43 | } |
| 44 | return tmp; |
| 45 | } |
| 46 | |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 47 | /* |
| 48 | * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since |
| 49 | * MSB and LSB are reversed in a byte by f2fs_set_bit. |
| 50 | */ |
| 51 | static inline unsigned long __reverse_ffs(unsigned long word) |
| 52 | { |
| 53 | int num = 0; |
| 54 | |
| 55 | #if BITS_PER_LONG == 64 |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 56 | if ((word & 0xffffffff00000000UL) == 0) |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 57 | num += 32; |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 58 | else |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 59 | word >>= 32; |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 60 | #endif |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 61 | if ((word & 0xffff0000) == 0) |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 62 | num += 16; |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 63 | else |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 64 | word >>= 16; |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 65 | |
| 66 | if ((word & 0xff00) == 0) |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 67 | num += 8; |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 68 | else |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 69 | word >>= 8; |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 70 | |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 71 | if ((word & 0xf0) == 0) |
| 72 | num += 4; |
| 73 | else |
| 74 | word >>= 4; |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 75 | |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 76 | if ((word & 0xc) == 0) |
| 77 | num += 2; |
| 78 | else |
| 79 | word >>= 2; |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 80 | |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 81 | if ((word & 0x2) == 0) |
| 82 | num += 1; |
| 83 | return num; |
| 84 | } |
| 85 | |
| 86 | /* |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 87 | * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 88 | * f2fs_set_bit makes MSB and LSB reversed in a byte. |
Fan Li | 692223d | 2015-11-12 08:43:04 +0800 | [diff] [blame] | 89 | * @size must be integral times of unsigned long. |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 90 | * Example: |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 91 | * MSB <--> LSB |
| 92 | * f2fs_set_bit(0, bitmap) => 1000 0000 |
| 93 | * f2fs_set_bit(7, bitmap) => 0000 0001 |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 94 | */ |
| 95 | static unsigned long __find_rev_next_bit(const unsigned long *addr, |
| 96 | unsigned long size, unsigned long offset) |
| 97 | { |
| 98 | const unsigned long *p = addr + BIT_WORD(offset); |
Fan Li | 692223d | 2015-11-12 08:43:04 +0800 | [diff] [blame] | 99 | unsigned long result = size; |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 100 | unsigned long tmp; |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 101 | |
| 102 | if (offset >= size) |
| 103 | return size; |
| 104 | |
Fan Li | 692223d | 2015-11-12 08:43:04 +0800 | [diff] [blame] | 105 | size -= (offset & ~(BITS_PER_LONG - 1)); |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 106 | offset %= BITS_PER_LONG; |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 107 | |
Fan Li | 692223d | 2015-11-12 08:43:04 +0800 | [diff] [blame] | 108 | while (1) { |
| 109 | if (*p == 0) |
| 110 | goto pass; |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 111 | |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 112 | tmp = __reverse_ulong((unsigned char *)p); |
Fan Li | 692223d | 2015-11-12 08:43:04 +0800 | [diff] [blame] | 113 | |
| 114 | tmp &= ~0UL >> offset; |
| 115 | if (size < BITS_PER_LONG) |
| 116 | tmp &= (~0UL << (BITS_PER_LONG - size)); |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 117 | if (tmp) |
Fan Li | 692223d | 2015-11-12 08:43:04 +0800 | [diff] [blame] | 118 | goto found; |
| 119 | pass: |
| 120 | if (size <= BITS_PER_LONG) |
| 121 | break; |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 122 | size -= BITS_PER_LONG; |
Fan Li | 692223d | 2015-11-12 08:43:04 +0800 | [diff] [blame] | 123 | offset = 0; |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 124 | p++; |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 125 | } |
Fan Li | 692223d | 2015-11-12 08:43:04 +0800 | [diff] [blame] | 126 | return result; |
| 127 | found: |
| 128 | return result - size + __reverse_ffs(tmp); |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 129 | } |
| 130 | |
| 131 | static unsigned long __find_rev_next_zero_bit(const unsigned long *addr, |
| 132 | unsigned long size, unsigned long offset) |
| 133 | { |
| 134 | const unsigned long *p = addr + BIT_WORD(offset); |
Jaegeuk Kim | 8060944 | 2015-12-04 16:51:13 -0800 | [diff] [blame] | 135 | unsigned long result = size; |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 136 | unsigned long tmp; |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 137 | |
| 138 | if (offset >= size) |
| 139 | return size; |
| 140 | |
Jaegeuk Kim | 8060944 | 2015-12-04 16:51:13 -0800 | [diff] [blame] | 141 | size -= (offset & ~(BITS_PER_LONG - 1)); |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 142 | offset %= BITS_PER_LONG; |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 143 | |
Jaegeuk Kim | 8060944 | 2015-12-04 16:51:13 -0800 | [diff] [blame] | 144 | while (1) { |
| 145 | if (*p == ~0UL) |
| 146 | goto pass; |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 147 | |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 148 | tmp = __reverse_ulong((unsigned char *)p); |
Jaegeuk Kim | 8060944 | 2015-12-04 16:51:13 -0800 | [diff] [blame] | 149 | |
| 150 | if (offset) |
| 151 | tmp |= ~0UL << (BITS_PER_LONG - offset); |
| 152 | if (size < BITS_PER_LONG) |
| 153 | tmp |= ~0UL >> size; |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 154 | if (tmp != ~0UL) |
Jaegeuk Kim | 8060944 | 2015-12-04 16:51:13 -0800 | [diff] [blame] | 155 | goto found; |
| 156 | pass: |
| 157 | if (size <= BITS_PER_LONG) |
| 158 | break; |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 159 | size -= BITS_PER_LONG; |
Jaegeuk Kim | 8060944 | 2015-12-04 16:51:13 -0800 | [diff] [blame] | 160 | offset = 0; |
Jaegeuk Kim | f96999c | 2015-10-20 15:17:19 -0700 | [diff] [blame] | 161 | p++; |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 162 | } |
Jaegeuk Kim | 8060944 | 2015-12-04 16:51:13 -0800 | [diff] [blame] | 163 | return result; |
| 164 | found: |
| 165 | return result - size + __reverse_ffz(tmp); |
Changman Lee | 9a7f143 | 2013-11-15 10:42:51 +0900 | [diff] [blame] | 166 | } |
| 167 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 168 | void register_inmem_page(struct inode *inode, struct page *page) |
| 169 | { |
| 170 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 171 | struct inmem_pages *new; |
Jaegeuk Kim | 9be32d7 | 2014-12-05 10:39:49 -0800 | [diff] [blame] | 172 | |
Jaegeuk Kim | 9e4ded3 | 2014-12-17 19:58:58 -0800 | [diff] [blame] | 173 | f2fs_trace_pid(page); |
Jaegeuk Kim | 0722b10 | 2014-12-05 11:58:02 -0800 | [diff] [blame] | 174 | |
Chao Yu | decd36b | 2015-08-07 18:42:09 +0800 | [diff] [blame] | 175 | set_page_private(page, (unsigned long)ATOMIC_WRITTEN_PAGE); |
| 176 | SetPagePrivate(page); |
| 177 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 178 | new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS); |
| 179 | |
| 180 | /* add atomic page indices to the list */ |
| 181 | new->page = page; |
| 182 | INIT_LIST_HEAD(&new->list); |
Chao Yu | decd36b | 2015-08-07 18:42:09 +0800 | [diff] [blame] | 183 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 184 | /* increase reference count with clean state */ |
| 185 | mutex_lock(&fi->inmem_lock); |
| 186 | get_page(page); |
| 187 | list_add_tail(&new->list, &fi->inmem_pages); |
Jaegeuk Kim | 8dcf2ff7 | 2014-12-05 17:18:15 -0800 | [diff] [blame] | 188 | inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 189 | mutex_unlock(&fi->inmem_lock); |
Jaegeuk Kim | 8ce67cb | 2015-03-17 17:58:08 -0700 | [diff] [blame] | 190 | |
| 191 | trace_f2fs_register_inmem_page(page, INMEM); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 192 | } |
| 193 | |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 194 | static int __revoke_inmem_pages(struct inode *inode, |
| 195 | struct list_head *head, bool drop, bool recover) |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 196 | { |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 197 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 198 | struct inmem_pages *cur, *tmp; |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 199 | int err = 0; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 200 | |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 201 | list_for_each_entry_safe(cur, tmp, head, list) { |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 202 | struct page *page = cur->page; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 203 | |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 204 | if (drop) |
| 205 | trace_f2fs_commit_inmem_page(page, INMEM_DROP); |
| 206 | |
| 207 | lock_page(page); |
| 208 | |
| 209 | if (recover) { |
| 210 | struct dnode_of_data dn; |
| 211 | struct node_info ni; |
| 212 | |
| 213 | trace_f2fs_commit_inmem_page(page, INMEM_REVOKE); |
| 214 | |
| 215 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 216 | if (get_dnode_of_data(&dn, page->index, LOOKUP_NODE)) { |
| 217 | err = -EAGAIN; |
| 218 | goto next; |
| 219 | } |
| 220 | get_node_info(sbi, dn.nid, &ni); |
| 221 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, |
| 222 | cur->old_addr, ni.version, true, true); |
| 223 | f2fs_put_dnode(&dn); |
| 224 | } |
| 225 | next: |
| 226 | ClearPageUptodate(page); |
| 227 | set_page_private(page, 0); |
| 228 | ClearPageUptodate(page); |
| 229 | f2fs_put_page(page, 1); |
Chao Yu | decd36b | 2015-08-07 18:42:09 +0800 | [diff] [blame] | 230 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 231 | list_del(&cur->list); |
| 232 | kmem_cache_free(inmem_entry_slab, cur); |
Jaegeuk Kim | 8dcf2ff7 | 2014-12-05 17:18:15 -0800 | [diff] [blame] | 233 | dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 234 | } |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 235 | return err; |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 236 | } |
| 237 | |
| 238 | void drop_inmem_pages(struct inode *inode) |
| 239 | { |
| 240 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 241 | |
| 242 | mutex_lock(&fi->inmem_lock); |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 243 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 244 | mutex_unlock(&fi->inmem_lock); |
| 245 | } |
| 246 | |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 247 | static int __commit_inmem_pages(struct inode *inode, |
| 248 | struct list_head *revoke_list) |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 249 | { |
| 250 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 251 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 252 | struct inmem_pages *cur, *tmp; |
| 253 | struct f2fs_io_info fio = { |
| 254 | .sbi = sbi, |
| 255 | .type = DATA, |
| 256 | .rw = WRITE_SYNC | REQ_PRIO, |
| 257 | .encrypted_page = NULL, |
| 258 | }; |
| 259 | bool submit_bio = false; |
| 260 | int err = 0; |
| 261 | |
| 262 | list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) { |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 263 | struct page *page = cur->page; |
| 264 | |
| 265 | lock_page(page); |
| 266 | if (page->mapping == inode->i_mapping) { |
| 267 | trace_f2fs_commit_inmem_page(page, INMEM); |
| 268 | |
| 269 | set_page_dirty(page); |
| 270 | f2fs_wait_on_page_writeback(page, DATA, true); |
| 271 | if (clear_page_dirty_for_io(page)) |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 272 | inode_dec_dirty_pages(inode); |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 273 | |
| 274 | fio.page = page; |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 275 | err = do_write_data_page(&fio); |
| 276 | if (err) { |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 277 | unlock_page(page); |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 278 | break; |
| 279 | } |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 280 | |
| 281 | /* record old blkaddr for revoking */ |
| 282 | cur->old_addr = fio.old_blkaddr; |
| 283 | |
| 284 | clear_cold_data(page); |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 285 | submit_bio = true; |
| 286 | } |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 287 | unlock_page(page); |
| 288 | list_move_tail(&cur->list, revoke_list); |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | if (submit_bio) |
| 292 | f2fs_submit_merged_bio_cond(sbi, inode, NULL, 0, DATA, WRITE); |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 293 | |
| 294 | if (!err) |
| 295 | __revoke_inmem_pages(inode, revoke_list, false, false); |
| 296 | |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 297 | return err; |
| 298 | } |
| 299 | |
| 300 | int commit_inmem_pages(struct inode *inode) |
| 301 | { |
| 302 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 303 | struct f2fs_inode_info *fi = F2FS_I(inode); |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 304 | struct list_head revoke_list; |
| 305 | int err; |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 306 | |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 307 | INIT_LIST_HEAD(&revoke_list); |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 308 | f2fs_balance_fs(sbi, true); |
| 309 | f2fs_lock_op(sbi); |
| 310 | |
| 311 | mutex_lock(&fi->inmem_lock); |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 312 | err = __commit_inmem_pages(inode, &revoke_list); |
| 313 | if (err) { |
| 314 | int ret; |
| 315 | /* |
| 316 | * try to revoke all committed pages, but still we could fail |
| 317 | * due to no memory or other reason, if that happened, EAGAIN |
| 318 | * will be returned, which means in such case, transaction is |
| 319 | * already not integrity, caller should use journal to do the |
| 320 | * recovery or rewrite & commit last transaction. For other |
| 321 | * error number, revoking was done by filesystem itself. |
| 322 | */ |
| 323 | ret = __revoke_inmem_pages(inode, &revoke_list, false, true); |
| 324 | if (ret) |
| 325 | err = ret; |
| 326 | |
| 327 | /* drop all uncommitted pages */ |
| 328 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); |
| 329 | } |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 330 | mutex_unlock(&fi->inmem_lock); |
| 331 | |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 332 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 333 | return err; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 334 | } |
| 335 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 336 | /* |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 337 | * This function balances dirty node and dentry pages. |
| 338 | * In addition, it controls garbage collection. |
| 339 | */ |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 340 | void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 341 | { |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 342 | if (!need) |
| 343 | return; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 344 | /* |
Jaegeuk Kim | 029cd28 | 2012-12-21 17:20:21 +0900 | [diff] [blame] | 345 | * We should do GC or end up with checkpoint, if there are so many dirty |
| 346 | * dir/node pages without enough free segments. |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 347 | */ |
Jaegeuk Kim | 4372752 | 2013-02-04 15:11:17 +0900 | [diff] [blame] | 348 | if (has_not_enough_free_secs(sbi, 0)) { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 349 | mutex_lock(&sbi->gc_mutex); |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 350 | f2fs_gc(sbi, false); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 351 | } |
| 352 | } |
| 353 | |
Jaegeuk Kim | 4660f9c | 2013-10-24 14:19:18 +0900 | [diff] [blame] | 354 | void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) |
| 355 | { |
Chao Yu | 1dcc336 | 2015-02-05 17:57:31 +0800 | [diff] [blame] | 356 | /* try to shrink extent cache when there is no enough memory */ |
Jaegeuk Kim | 554df79 | 2015-06-19 13:41:23 -0700 | [diff] [blame] | 357 | if (!available_free_memory(sbi, EXTENT_CACHE)) |
| 358 | f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER); |
Chao Yu | 1dcc336 | 2015-02-05 17:57:31 +0800 | [diff] [blame] | 359 | |
Jaegeuk Kim | 1b38dc8 | 2015-06-19 15:36:07 -0700 | [diff] [blame] | 360 | /* check the # of cached NAT entries */ |
| 361 | if (!available_free_memory(sbi, NAT_ENTRIES)) |
| 362 | try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK); |
| 363 | |
Chao Yu | 3169658 | 2015-07-28 18:33:46 +0800 | [diff] [blame] | 364 | if (!available_free_memory(sbi, FREE_NIDS)) |
| 365 | try_to_free_nids(sbi, NAT_ENTRY_PER_BLOCK * FREE_NID_PAGES); |
| 366 | |
Jaegeuk Kim | 1b38dc8 | 2015-06-19 15:36:07 -0700 | [diff] [blame] | 367 | /* checkpoint is the only way to shrink partial cached entries */ |
| 368 | if (!available_free_memory(sbi, NAT_ENTRIES) || |
Jaegeuk Kim | 60b99b4 | 2015-10-05 14:49:57 -0700 | [diff] [blame] | 369 | !available_free_memory(sbi, INO_ENTRIES) || |
Chao Yu | 7d768d2 | 2016-01-18 18:31:18 +0800 | [diff] [blame] | 370 | excess_prefree_segs(sbi) || |
| 371 | excess_dirty_nats(sbi) || |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 372 | (is_idle(sbi) && f2fs_time_over(sbi, CP_TIME))) { |
Chao Yu | e9f5b8b | 2016-02-14 18:54:33 +0800 | [diff] [blame] | 373 | if (test_opt(sbi, DATA_FLUSH)) { |
| 374 | struct blk_plug plug; |
| 375 | |
| 376 | blk_start_plug(&plug); |
Chao Yu | 36b35a0 | 2015-12-17 17:13:28 +0800 | [diff] [blame] | 377 | sync_dirty_inodes(sbi, FILE_INODE); |
Chao Yu | e9f5b8b | 2016-02-14 18:54:33 +0800 | [diff] [blame] | 378 | blk_finish_plug(&plug); |
| 379 | } |
Jaegeuk Kim | 4660f9c | 2013-10-24 14:19:18 +0900 | [diff] [blame] | 380 | f2fs_sync_fs(sbi->sb, true); |
Jaegeuk Kim | 42190d2 | 2016-01-09 13:45:17 -0800 | [diff] [blame] | 381 | stat_inc_bg_cp_count(sbi->stat_info); |
Chao Yu | 36b35a0 | 2015-12-17 17:13:28 +0800 | [diff] [blame] | 382 | } |
Jaegeuk Kim | 4660f9c | 2013-10-24 14:19:18 +0900 | [diff] [blame] | 383 | } |
| 384 | |
Gu Zheng | 2163d19 | 2014-04-27 14:21:33 +0800 | [diff] [blame] | 385 | static int issue_flush_thread(void *data) |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 386 | { |
| 387 | struct f2fs_sb_info *sbi = data; |
Gu Zheng | a688b9d9e | 2014-04-27 14:21:21 +0800 | [diff] [blame] | 388 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
| 389 | wait_queue_head_t *q = &fcc->flush_wait_queue; |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 390 | repeat: |
| 391 | if (kthread_should_stop()) |
| 392 | return 0; |
| 393 | |
Gu Zheng | 721bd4d | 2014-09-05 18:31:00 +0800 | [diff] [blame] | 394 | if (!llist_empty(&fcc->issue_list)) { |
Jaegeuk Kim | 740432f | 2015-08-14 11:43:56 -0700 | [diff] [blame] | 395 | struct bio *bio; |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 396 | struct flush_cmd *cmd, *next; |
| 397 | int ret; |
| 398 | |
Jaegeuk Kim | 740432f | 2015-08-14 11:43:56 -0700 | [diff] [blame] | 399 | bio = f2fs_bio_alloc(0); |
| 400 | |
Gu Zheng | 721bd4d | 2014-09-05 18:31:00 +0800 | [diff] [blame] | 401 | fcc->dispatch_list = llist_del_all(&fcc->issue_list); |
| 402 | fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); |
| 403 | |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 404 | bio->bi_bdev = sbi->sb->s_bdev; |
| 405 | ret = submit_bio_wait(WRITE_FLUSH, bio); |
| 406 | |
Gu Zheng | 721bd4d | 2014-09-05 18:31:00 +0800 | [diff] [blame] | 407 | llist_for_each_entry_safe(cmd, next, |
| 408 | fcc->dispatch_list, llnode) { |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 409 | cmd->ret = ret; |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 410 | complete(&cmd->wait); |
| 411 | } |
Gu Zheng | a4ed23f | 2014-04-11 17:49:35 +0800 | [diff] [blame] | 412 | bio_put(bio); |
Gu Zheng | a688b9d9e | 2014-04-27 14:21:21 +0800 | [diff] [blame] | 413 | fcc->dispatch_list = NULL; |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 414 | } |
| 415 | |
Gu Zheng | a688b9d9e | 2014-04-27 14:21:21 +0800 | [diff] [blame] | 416 | wait_event_interruptible(*q, |
Gu Zheng | 721bd4d | 2014-09-05 18:31:00 +0800 | [diff] [blame] | 417 | kthread_should_stop() || !llist_empty(&fcc->issue_list)); |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 418 | goto repeat; |
| 419 | } |
| 420 | |
| 421 | int f2fs_issue_flush(struct f2fs_sb_info *sbi) |
| 422 | { |
Gu Zheng | a688b9d9e | 2014-04-27 14:21:21 +0800 | [diff] [blame] | 423 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
Chao Yu | adf8d90 | 2014-05-08 17:00:35 +0800 | [diff] [blame] | 424 | struct flush_cmd cmd; |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 425 | |
Jaegeuk Kim | 24a9ee0 | 2014-07-25 17:46:10 -0700 | [diff] [blame] | 426 | trace_f2fs_issue_flush(sbi->sb, test_opt(sbi, NOBARRIER), |
| 427 | test_opt(sbi, FLUSH_MERGE)); |
| 428 | |
Jaegeuk Kim | 0f7b2ab | 2014-07-23 09:57:31 -0700 | [diff] [blame] | 429 | if (test_opt(sbi, NOBARRIER)) |
| 430 | return 0; |
| 431 | |
Jaegeuk Kim | 740432f | 2015-08-14 11:43:56 -0700 | [diff] [blame] | 432 | if (!test_opt(sbi, FLUSH_MERGE)) { |
| 433 | struct bio *bio = f2fs_bio_alloc(0); |
| 434 | int ret; |
| 435 | |
| 436 | bio->bi_bdev = sbi->sb->s_bdev; |
| 437 | ret = submit_bio_wait(WRITE_FLUSH, bio); |
| 438 | bio_put(bio); |
| 439 | return ret; |
| 440 | } |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 441 | |
Chao Yu | adf8d90 | 2014-05-08 17:00:35 +0800 | [diff] [blame] | 442 | init_completion(&cmd.wait); |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 443 | |
Gu Zheng | 721bd4d | 2014-09-05 18:31:00 +0800 | [diff] [blame] | 444 | llist_add(&cmd.llnode, &fcc->issue_list); |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 445 | |
Gu Zheng | a688b9d9e | 2014-04-27 14:21:21 +0800 | [diff] [blame] | 446 | if (!fcc->dispatch_list) |
| 447 | wake_up(&fcc->flush_wait_queue); |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 448 | |
Chao Yu | adf8d90 | 2014-05-08 17:00:35 +0800 | [diff] [blame] | 449 | wait_for_completion(&cmd.wait); |
| 450 | |
| 451 | return cmd.ret; |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 452 | } |
| 453 | |
Gu Zheng | 2163d19 | 2014-04-27 14:21:33 +0800 | [diff] [blame] | 454 | int create_flush_cmd_control(struct f2fs_sb_info *sbi) |
| 455 | { |
| 456 | dev_t dev = sbi->sb->s_bdev->bd_dev; |
| 457 | struct flush_cmd_control *fcc; |
| 458 | int err = 0; |
| 459 | |
| 460 | fcc = kzalloc(sizeof(struct flush_cmd_control), GFP_KERNEL); |
| 461 | if (!fcc) |
| 462 | return -ENOMEM; |
Gu Zheng | 2163d19 | 2014-04-27 14:21:33 +0800 | [diff] [blame] | 463 | init_waitqueue_head(&fcc->flush_wait_queue); |
Gu Zheng | 721bd4d | 2014-09-05 18:31:00 +0800 | [diff] [blame] | 464 | init_llist_head(&fcc->issue_list); |
Chao Yu | 6b2920a | 2014-07-07 11:21:59 +0800 | [diff] [blame] | 465 | SM_I(sbi)->cmd_control_info = fcc; |
Gu Zheng | 2163d19 | 2014-04-27 14:21:33 +0800 | [diff] [blame] | 466 | fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, |
| 467 | "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); |
| 468 | if (IS_ERR(fcc->f2fs_issue_flush)) { |
| 469 | err = PTR_ERR(fcc->f2fs_issue_flush); |
| 470 | kfree(fcc); |
Chao Yu | 6b2920a | 2014-07-07 11:21:59 +0800 | [diff] [blame] | 471 | SM_I(sbi)->cmd_control_info = NULL; |
Gu Zheng | 2163d19 | 2014-04-27 14:21:33 +0800 | [diff] [blame] | 472 | return err; |
| 473 | } |
Gu Zheng | 2163d19 | 2014-04-27 14:21:33 +0800 | [diff] [blame] | 474 | |
| 475 | return err; |
| 476 | } |
| 477 | |
| 478 | void destroy_flush_cmd_control(struct f2fs_sb_info *sbi) |
| 479 | { |
Chao Yu | 6b2920a | 2014-07-07 11:21:59 +0800 | [diff] [blame] | 480 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
Gu Zheng | 2163d19 | 2014-04-27 14:21:33 +0800 | [diff] [blame] | 481 | |
| 482 | if (fcc && fcc->f2fs_issue_flush) |
| 483 | kthread_stop(fcc->f2fs_issue_flush); |
| 484 | kfree(fcc); |
Chao Yu | 6b2920a | 2014-07-07 11:21:59 +0800 | [diff] [blame] | 485 | SM_I(sbi)->cmd_control_info = NULL; |
Gu Zheng | 2163d19 | 2014-04-27 14:21:33 +0800 | [diff] [blame] | 486 | } |
| 487 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 488 | static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, |
| 489 | enum dirty_type dirty_type) |
| 490 | { |
| 491 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
| 492 | |
| 493 | /* need not be added */ |
| 494 | if (IS_CURSEG(sbi, segno)) |
| 495 | return; |
| 496 | |
| 497 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type])) |
| 498 | dirty_i->nr_dirty[dirty_type]++; |
| 499 | |
| 500 | if (dirty_type == DIRTY) { |
| 501 | struct seg_entry *sentry = get_seg_entry(sbi, segno); |
Changman Lee | 4625d6a | 2013-10-25 17:31:57 +0900 | [diff] [blame] | 502 | enum dirty_type t = sentry->type; |
Jaegeuk Kim | b2f2c39 | 2013-04-01 13:52:09 +0900 | [diff] [blame] | 503 | |
Jaegeuk Kim | ec325b5 | 2014-09-02 16:24:11 -0700 | [diff] [blame] | 504 | if (unlikely(t >= DIRTY)) { |
| 505 | f2fs_bug_on(sbi, 1); |
| 506 | return; |
| 507 | } |
Changman Lee | 4625d6a | 2013-10-25 17:31:57 +0900 | [diff] [blame] | 508 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t])) |
| 509 | dirty_i->nr_dirty[t]++; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 510 | } |
| 511 | } |
| 512 | |
| 513 | static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, |
| 514 | enum dirty_type dirty_type) |
| 515 | { |
| 516 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
| 517 | |
| 518 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type])) |
| 519 | dirty_i->nr_dirty[dirty_type]--; |
| 520 | |
| 521 | if (dirty_type == DIRTY) { |
Changman Lee | 4625d6a | 2013-10-25 17:31:57 +0900 | [diff] [blame] | 522 | struct seg_entry *sentry = get_seg_entry(sbi, segno); |
| 523 | enum dirty_type t = sentry->type; |
Jaegeuk Kim | b2f2c39 | 2013-04-01 13:52:09 +0900 | [diff] [blame] | 524 | |
Changman Lee | 4625d6a | 2013-10-25 17:31:57 +0900 | [diff] [blame] | 525 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t])) |
| 526 | dirty_i->nr_dirty[t]--; |
Jaegeuk Kim | b2f2c39 | 2013-04-01 13:52:09 +0900 | [diff] [blame] | 527 | |
Jaegeuk Kim | 5ec4e49 | 2013-03-31 13:26:03 +0900 | [diff] [blame] | 528 | if (get_valid_blocks(sbi, segno, sbi->segs_per_sec) == 0) |
| 529 | clear_bit(GET_SECNO(sbi, segno), |
| 530 | dirty_i->victim_secmap); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 531 | } |
| 532 | } |
| 533 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 534 | /* |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 535 | * Should not occur error such as -ENOMEM. |
| 536 | * Adding dirty entry into seglist is not critical operation. |
| 537 | * If a given segment is one of current working segments, it won't be added. |
| 538 | */ |
Haicheng Li | 8d8451a | 2013-06-13 16:59:28 +0800 | [diff] [blame] | 539 | static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 540 | { |
| 541 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
| 542 | unsigned short valid_blocks; |
| 543 | |
| 544 | if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno)) |
| 545 | return; |
| 546 | |
| 547 | mutex_lock(&dirty_i->seglist_lock); |
| 548 | |
| 549 | valid_blocks = get_valid_blocks(sbi, segno, 0); |
| 550 | |
| 551 | if (valid_blocks == 0) { |
| 552 | __locate_dirty_segment(sbi, segno, PRE); |
| 553 | __remove_dirty_segment(sbi, segno, DIRTY); |
| 554 | } else if (valid_blocks < sbi->blocks_per_seg) { |
| 555 | __locate_dirty_segment(sbi, segno, DIRTY); |
| 556 | } else { |
| 557 | /* Recovery routine with SSR needs this */ |
| 558 | __remove_dirty_segment(sbi, segno, DIRTY); |
| 559 | } |
| 560 | |
| 561 | mutex_unlock(&dirty_i->seglist_lock); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 562 | } |
| 563 | |
Jaegeuk Kim | 1e87a78 | 2014-04-15 13:57:55 +0900 | [diff] [blame] | 564 | static int f2fs_issue_discard(struct f2fs_sb_info *sbi, |
Jaegeuk Kim | 3720887 | 2013-11-12 16:55:17 +0900 | [diff] [blame] | 565 | block_t blkstart, block_t blklen) |
| 566 | { |
Chao Yu | 55cf9cb | 2014-09-15 18:01:10 +0800 | [diff] [blame] | 567 | sector_t start = SECTOR_FROM_BLOCK(blkstart); |
| 568 | sector_t len = SECTOR_FROM_BLOCK(blklen); |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 569 | struct seg_entry *se; |
| 570 | unsigned int offset; |
| 571 | block_t i; |
| 572 | |
| 573 | for (i = blkstart; i < blkstart + blklen; i++) { |
| 574 | se = get_seg_entry(sbi, GET_SEGNO(sbi, i)); |
| 575 | offset = GET_BLKOFF_FROM_SEG0(sbi, i); |
| 576 | |
| 577 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) |
| 578 | sbi->discard_blks--; |
| 579 | } |
Jaegeuk Kim | 1661d07 | 2013-11-12 17:01:00 +0900 | [diff] [blame] | 580 | trace_f2fs_issue_discard(sbi->sb, blkstart, blklen); |
Jaegeuk Kim | 1e87a78 | 2014-04-15 13:57:55 +0900 | [diff] [blame] | 581 | return blkdev_issue_discard(sbi->sb->s_bdev, start, len, GFP_NOFS, 0); |
| 582 | } |
| 583 | |
Chao Yu | e90c2d2 | 2015-07-28 18:36:47 +0800 | [diff] [blame] | 584 | bool discard_next_dnode(struct f2fs_sb_info *sbi, block_t blkaddr) |
Jaegeuk Kim | 1e87a78 | 2014-04-15 13:57:55 +0900 | [diff] [blame] | 585 | { |
Jaegeuk Kim | 60b286c | 2016-02-09 10:24:31 -0800 | [diff] [blame] | 586 | int err = -EOPNOTSUPP; |
Jaegeuk Kim | 40a02be | 2015-05-11 20:03:49 -0700 | [diff] [blame] | 587 | |
| 588 | if (test_opt(sbi, DISCARD)) { |
| 589 | struct seg_entry *se = get_seg_entry(sbi, |
| 590 | GET_SEGNO(sbi, blkaddr)); |
| 591 | unsigned int offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
| 592 | |
| 593 | if (f2fs_test_bit(offset, se->discard_map)) |
Chao Yu | e90c2d2 | 2015-07-28 18:36:47 +0800 | [diff] [blame] | 594 | return false; |
Jaegeuk Kim | 40a02be | 2015-05-11 20:03:49 -0700 | [diff] [blame] | 595 | |
| 596 | err = f2fs_issue_discard(sbi, blkaddr, 1); |
| 597 | } |
| 598 | |
Chao Yu | e90c2d2 | 2015-07-28 18:36:47 +0800 | [diff] [blame] | 599 | if (err) { |
Chao Yu | 381722d | 2015-05-19 17:40:04 +0800 | [diff] [blame] | 600 | update_meta_page(sbi, NULL, blkaddr); |
Chao Yu | e90c2d2 | 2015-07-28 18:36:47 +0800 | [diff] [blame] | 601 | return true; |
| 602 | } |
| 603 | return false; |
Jaegeuk Kim | 3720887 | 2013-11-12 16:55:17 +0900 | [diff] [blame] | 604 | } |
| 605 | |
Jaegeuk Kim | adf4983 | 2014-10-28 22:27:59 -0700 | [diff] [blame] | 606 | static void __add_discard_entry(struct f2fs_sb_info *sbi, |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 607 | struct cp_control *cpc, struct seg_entry *se, |
| 608 | unsigned int start, unsigned int end) |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 609 | { |
| 610 | struct list_head *head = &SM_I(sbi)->discard_list; |
Jaegeuk Kim | adf4983 | 2014-10-28 22:27:59 -0700 | [diff] [blame] | 611 | struct discard_entry *new, *last; |
| 612 | |
| 613 | if (!list_empty(head)) { |
| 614 | last = list_last_entry(head, struct discard_entry, list); |
| 615 | if (START_BLOCK(sbi, cpc->trim_start) + start == |
| 616 | last->blkaddr + last->len) { |
| 617 | last->len += end - start; |
| 618 | goto done; |
| 619 | } |
| 620 | } |
| 621 | |
| 622 | new = f2fs_kmem_cache_alloc(discard_entry_slab, GFP_NOFS); |
| 623 | INIT_LIST_HEAD(&new->list); |
| 624 | new->blkaddr = START_BLOCK(sbi, cpc->trim_start) + start; |
| 625 | new->len = end - start; |
| 626 | list_add_tail(&new->list, head); |
| 627 | done: |
| 628 | SM_I(sbi)->nr_discards += end - start; |
Jaegeuk Kim | adf4983 | 2014-10-28 22:27:59 -0700 | [diff] [blame] | 629 | } |
| 630 | |
| 631 | static void add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
| 632 | { |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 633 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
| 634 | int max_blocks = sbi->blocks_per_seg; |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 635 | struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start); |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 636 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; |
| 637 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 638 | unsigned long *discard_map = (unsigned long *)se->discard_map; |
Jaegeuk Kim | 60a3b78 | 2015-02-10 16:44:29 -0800 | [diff] [blame] | 639 | unsigned long *dmap = SIT_I(sbi)->tmp_map; |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 640 | unsigned int start = 0, end = -1; |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 641 | bool force = (cpc->reason == CP_DISCARD); |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 642 | int i; |
| 643 | |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 644 | if (se->valid_blocks == max_blocks) |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 645 | return; |
| 646 | |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 647 | if (!force) { |
| 648 | if (!test_opt(sbi, DISCARD) || !se->valid_blocks || |
Dan Carpenter | 912a83b | 2015-05-14 11:52:28 +0300 | [diff] [blame] | 649 | SM_I(sbi)->nr_discards >= SM_I(sbi)->max_discards) |
| 650 | return; |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 651 | } |
| 652 | |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 653 | /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */ |
| 654 | for (i = 0; i < entries; i++) |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 655 | dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] : |
Jaegeuk Kim | d7bc248 | 2014-12-12 13:53:41 -0800 | [diff] [blame] | 656 | (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i]; |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 657 | |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 658 | while (force || SM_I(sbi)->nr_discards <= SM_I(sbi)->max_discards) { |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 659 | start = __find_rev_next_bit(dmap, max_blocks, end + 1); |
| 660 | if (start >= max_blocks) |
| 661 | break; |
| 662 | |
| 663 | end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 664 | __add_discard_entry(sbi, cpc, se, start, end); |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 665 | } |
| 666 | } |
| 667 | |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 668 | void release_discard_addrs(struct f2fs_sb_info *sbi) |
| 669 | { |
| 670 | struct list_head *head = &(SM_I(sbi)->discard_list); |
| 671 | struct discard_entry *entry, *this; |
| 672 | |
| 673 | /* drop caches */ |
| 674 | list_for_each_entry_safe(entry, this, head, list) { |
| 675 | list_del(&entry->list); |
| 676 | kmem_cache_free(discard_entry_slab, entry); |
| 677 | } |
| 678 | } |
| 679 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 680 | /* |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 681 | * Should call clear_prefree_segments after checkpoint is done. |
| 682 | */ |
| 683 | static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) |
| 684 | { |
| 685 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
Chao Yu | b65ee14 | 2014-08-04 10:10:07 +0800 | [diff] [blame] | 686 | unsigned int segno; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 687 | |
| 688 | mutex_lock(&dirty_i->seglist_lock); |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 689 | for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi)) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 690 | __set_test_and_free(sbi, segno); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 691 | mutex_unlock(&dirty_i->seglist_lock); |
| 692 | } |
| 693 | |
Jaegeuk Kim | 836b5a6 | 2015-04-30 22:50:06 -0700 | [diff] [blame] | 694 | void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 695 | { |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 696 | struct list_head *head = &(SM_I(sbi)->discard_list); |
Chao Yu | 2d7b822 | 2014-03-29 11:33:17 +0800 | [diff] [blame] | 697 | struct discard_entry *entry, *this; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 698 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
Changman Lee | 29e59c1 | 2013-11-11 09:24:37 +0900 | [diff] [blame] | 699 | unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; |
Changman Lee | 29e59c1 | 2013-11-11 09:24:37 +0900 | [diff] [blame] | 700 | unsigned int start = 0, end = -1; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 701 | |
| 702 | mutex_lock(&dirty_i->seglist_lock); |
Changman Lee | 29e59c1 | 2013-11-11 09:24:37 +0900 | [diff] [blame] | 703 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 704 | while (1) { |
Changman Lee | 29e59c1 | 2013-11-11 09:24:37 +0900 | [diff] [blame] | 705 | int i; |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 706 | start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1); |
| 707 | if (start >= MAIN_SEGS(sbi)) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 708 | break; |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 709 | end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi), |
| 710 | start + 1); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 711 | |
Changman Lee | 29e59c1 | 2013-11-11 09:24:37 +0900 | [diff] [blame] | 712 | for (i = start; i < end; i++) |
| 713 | clear_bit(i, prefree_map); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 714 | |
Changman Lee | 29e59c1 | 2013-11-11 09:24:37 +0900 | [diff] [blame] | 715 | dirty_i->nr_dirty[PRE] -= end - start; |
| 716 | |
| 717 | if (!test_opt(sbi, DISCARD)) |
| 718 | continue; |
| 719 | |
Jaegeuk Kim | 3720887 | 2013-11-12 16:55:17 +0900 | [diff] [blame] | 720 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start), |
| 721 | (end - start) << sbi->log_blocks_per_seg); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 722 | } |
| 723 | mutex_unlock(&dirty_i->seglist_lock); |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 724 | |
| 725 | /* send small discards */ |
Chao Yu | 2d7b822 | 2014-03-29 11:33:17 +0800 | [diff] [blame] | 726 | list_for_each_entry_safe(entry, this, head, list) { |
Jaegeuk Kim | 836b5a6 | 2015-04-30 22:50:06 -0700 | [diff] [blame] | 727 | if (cpc->reason == CP_DISCARD && entry->len < cpc->trim_minlen) |
| 728 | goto skip; |
Jaegeuk Kim | 3720887 | 2013-11-12 16:55:17 +0900 | [diff] [blame] | 729 | f2fs_issue_discard(sbi, entry->blkaddr, entry->len); |
Jaegeuk Kim | f56aa1c | 2015-06-02 15:48:20 -0700 | [diff] [blame] | 730 | cpc->trimmed += entry->len; |
Jaegeuk Kim | 836b5a6 | 2015-04-30 22:50:06 -0700 | [diff] [blame] | 731 | skip: |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 732 | list_del(&entry->list); |
| 733 | SM_I(sbi)->nr_discards -= entry->len; |
| 734 | kmem_cache_free(discard_entry_slab, entry); |
| 735 | } |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 736 | } |
| 737 | |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 738 | static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 739 | { |
| 740 | struct sit_info *sit_i = SIT_I(sbi); |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 741 | |
| 742 | if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 743 | sit_i->dirty_sentries++; |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 744 | return false; |
| 745 | } |
| 746 | |
| 747 | return true; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 748 | } |
| 749 | |
| 750 | static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type, |
| 751 | unsigned int segno, int modified) |
| 752 | { |
| 753 | struct seg_entry *se = get_seg_entry(sbi, segno); |
| 754 | se->type = type; |
| 755 | if (modified) |
| 756 | __mark_sit_entry_dirty(sbi, segno); |
| 757 | } |
| 758 | |
| 759 | static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) |
| 760 | { |
| 761 | struct seg_entry *se; |
| 762 | unsigned int segno, offset; |
| 763 | long int new_vblocks; |
| 764 | |
| 765 | segno = GET_SEGNO(sbi, blkaddr); |
| 766 | |
| 767 | se = get_seg_entry(sbi, segno); |
| 768 | new_vblocks = se->valid_blocks + del; |
Jaegeuk Kim | 491c085 | 2014-02-04 13:01:10 +0900 | [diff] [blame] | 769 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 770 | |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 771 | f2fs_bug_on(sbi, (new_vblocks >> (sizeof(unsigned short) << 3) || |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 772 | (new_vblocks > sbi->blocks_per_seg))); |
| 773 | |
| 774 | se->valid_blocks = new_vblocks; |
| 775 | se->mtime = get_mtime(sbi); |
| 776 | SIT_I(sbi)->max_mtime = se->mtime; |
| 777 | |
| 778 | /* Update valid block bitmap */ |
| 779 | if (del > 0) { |
Gu Zheng | 52aca07 | 2014-10-20 17:45:51 +0800 | [diff] [blame] | 780 | if (f2fs_test_and_set_bit(offset, se->cur_valid_map)) |
Jaegeuk Kim | 0579676 | 2014-09-02 16:05:00 -0700 | [diff] [blame] | 781 | f2fs_bug_on(sbi, 1); |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 782 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) |
| 783 | sbi->discard_blks--; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 784 | } else { |
Gu Zheng | 52aca07 | 2014-10-20 17:45:51 +0800 | [diff] [blame] | 785 | if (!f2fs_test_and_clear_bit(offset, se->cur_valid_map)) |
Jaegeuk Kim | 0579676 | 2014-09-02 16:05:00 -0700 | [diff] [blame] | 786 | f2fs_bug_on(sbi, 1); |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 787 | if (f2fs_test_and_clear_bit(offset, se->discard_map)) |
| 788 | sbi->discard_blks++; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 789 | } |
| 790 | if (!f2fs_test_bit(offset, se->ckpt_valid_map)) |
| 791 | se->ckpt_valid_blocks += del; |
| 792 | |
| 793 | __mark_sit_entry_dirty(sbi, segno); |
| 794 | |
| 795 | /* update total number of valid blocks to be written in ckpt area */ |
| 796 | SIT_I(sbi)->written_valid_blocks += del; |
| 797 | |
| 798 | if (sbi->segs_per_sec > 1) |
| 799 | get_sec_entry(sbi, segno)->valid_blocks += del; |
| 800 | } |
| 801 | |
Jaegeuk Kim | 5e44381 | 2014-01-28 12:22:14 +0900 | [diff] [blame] | 802 | void refresh_sit_entry(struct f2fs_sb_info *sbi, block_t old, block_t new) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 803 | { |
Jaegeuk Kim | 5e44381 | 2014-01-28 12:22:14 +0900 | [diff] [blame] | 804 | update_sit_entry(sbi, new, 1); |
| 805 | if (GET_SEGNO(sbi, old) != NULL_SEGNO) |
| 806 | update_sit_entry(sbi, old, -1); |
| 807 | |
| 808 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old)); |
| 809 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new)); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 810 | } |
| 811 | |
| 812 | void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr) |
| 813 | { |
| 814 | unsigned int segno = GET_SEGNO(sbi, addr); |
| 815 | struct sit_info *sit_i = SIT_I(sbi); |
| 816 | |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 817 | f2fs_bug_on(sbi, addr == NULL_ADDR); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 818 | if (addr == NEW_ADDR) |
| 819 | return; |
| 820 | |
| 821 | /* add it into sit main buffer */ |
| 822 | mutex_lock(&sit_i->sentry_lock); |
| 823 | |
| 824 | update_sit_entry(sbi, addr, -1); |
| 825 | |
| 826 | /* add it into dirty seglist */ |
| 827 | locate_dirty_segment(sbi, segno); |
| 828 | |
| 829 | mutex_unlock(&sit_i->sentry_lock); |
| 830 | } |
| 831 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 832 | bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr) |
| 833 | { |
| 834 | struct sit_info *sit_i = SIT_I(sbi); |
| 835 | unsigned int segno, offset; |
| 836 | struct seg_entry *se; |
| 837 | bool is_cp = false; |
| 838 | |
| 839 | if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) |
| 840 | return true; |
| 841 | |
| 842 | mutex_lock(&sit_i->sentry_lock); |
| 843 | |
| 844 | segno = GET_SEGNO(sbi, blkaddr); |
| 845 | se = get_seg_entry(sbi, segno); |
| 846 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
| 847 | |
| 848 | if (f2fs_test_bit(offset, se->ckpt_valid_map)) |
| 849 | is_cp = true; |
| 850 | |
| 851 | mutex_unlock(&sit_i->sentry_lock); |
| 852 | |
| 853 | return is_cp; |
| 854 | } |
| 855 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 856 | /* |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 857 | * This function should be resided under the curseg_mutex lock |
| 858 | */ |
| 859 | static void __add_sum_entry(struct f2fs_sb_info *sbi, int type, |
Haicheng Li | e79efe3 | 2013-06-13 16:59:27 +0800 | [diff] [blame] | 860 | struct f2fs_summary *sum) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 861 | { |
| 862 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
| 863 | void *addr = curseg->sum_blk; |
Haicheng Li | e79efe3 | 2013-06-13 16:59:27 +0800 | [diff] [blame] | 864 | addr += curseg->next_blkoff * sizeof(struct f2fs_summary); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 865 | memcpy(addr, sum, sizeof(struct f2fs_summary)); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 866 | } |
| 867 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 868 | /* |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 869 | * Calculate the number of current summary pages for writing |
| 870 | */ |
Chao Yu | 3fa06d7 | 2014-12-09 14:21:46 +0800 | [diff] [blame] | 871 | int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 872 | { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 873 | int valid_sum_count = 0; |
Fan Li | 9a47938 | 2013-10-29 16:21:47 +0800 | [diff] [blame] | 874 | int i, sum_in_page; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 875 | |
| 876 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { |
| 877 | if (sbi->ckpt->alloc_type[i] == SSR) |
| 878 | valid_sum_count += sbi->blocks_per_seg; |
Chao Yu | 3fa06d7 | 2014-12-09 14:21:46 +0800 | [diff] [blame] | 879 | else { |
| 880 | if (for_ra) |
| 881 | valid_sum_count += le16_to_cpu( |
| 882 | F2FS_CKPT(sbi)->cur_data_blkoff[i]); |
| 883 | else |
| 884 | valid_sum_count += curseg_blkoff(sbi, i); |
| 885 | } |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 886 | } |
| 887 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 888 | sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE - |
Fan Li | 9a47938 | 2013-10-29 16:21:47 +0800 | [diff] [blame] | 889 | SUM_FOOTER_SIZE) / SUMMARY_SIZE; |
| 890 | if (valid_sum_count <= sum_in_page) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 891 | return 1; |
Fan Li | 9a47938 | 2013-10-29 16:21:47 +0800 | [diff] [blame] | 892 | else if ((valid_sum_count - sum_in_page) <= |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 893 | (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 894 | return 2; |
| 895 | return 3; |
| 896 | } |
| 897 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 898 | /* |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 899 | * Caller should put this summary page |
| 900 | */ |
| 901 | struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno) |
| 902 | { |
| 903 | return get_meta_page(sbi, GET_SUM_BLOCK(sbi, segno)); |
| 904 | } |
| 905 | |
Chao Yu | 381722d | 2015-05-19 17:40:04 +0800 | [diff] [blame] | 906 | void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr) |
| 907 | { |
| 908 | struct page *page = grab_meta_page(sbi, blk_addr); |
| 909 | void *dst = page_address(page); |
| 910 | |
| 911 | if (src) |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 912 | memcpy(dst, src, PAGE_SIZE); |
Chao Yu | 381722d | 2015-05-19 17:40:04 +0800 | [diff] [blame] | 913 | else |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 914 | memset(dst, 0, PAGE_SIZE); |
Chao Yu | 381722d | 2015-05-19 17:40:04 +0800 | [diff] [blame] | 915 | set_page_dirty(page); |
| 916 | f2fs_put_page(page, 1); |
| 917 | } |
| 918 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 919 | static void write_sum_page(struct f2fs_sb_info *sbi, |
| 920 | struct f2fs_summary_block *sum_blk, block_t blk_addr) |
| 921 | { |
Chao Yu | 381722d | 2015-05-19 17:40:04 +0800 | [diff] [blame] | 922 | update_meta_page(sbi, (void *)sum_blk, blk_addr); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 923 | } |
| 924 | |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 925 | static void write_current_sum_page(struct f2fs_sb_info *sbi, |
| 926 | int type, block_t blk_addr) |
| 927 | { |
| 928 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
| 929 | struct page *page = grab_meta_page(sbi, blk_addr); |
| 930 | struct f2fs_summary_block *src = curseg->sum_blk; |
| 931 | struct f2fs_summary_block *dst; |
| 932 | |
| 933 | dst = (struct f2fs_summary_block *)page_address(page); |
| 934 | |
| 935 | mutex_lock(&curseg->curseg_mutex); |
| 936 | |
| 937 | down_read(&curseg->journal_rwsem); |
| 938 | memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE); |
| 939 | up_read(&curseg->journal_rwsem); |
| 940 | |
| 941 | memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE); |
| 942 | memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE); |
| 943 | |
| 944 | mutex_unlock(&curseg->curseg_mutex); |
| 945 | |
| 946 | set_page_dirty(page); |
| 947 | f2fs_put_page(page, 1); |
| 948 | } |
| 949 | |
Jaegeuk Kim | 6037468 | 2013-03-31 13:58:51 +0900 | [diff] [blame] | 950 | static int is_next_segment_free(struct f2fs_sb_info *sbi, int type) |
| 951 | { |
| 952 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
Haicheng Li | 81fb5e8 | 2013-05-14 18:20:28 +0800 | [diff] [blame] | 953 | unsigned int segno = curseg->segno + 1; |
Jaegeuk Kim | 6037468 | 2013-03-31 13:58:51 +0900 | [diff] [blame] | 954 | struct free_segmap_info *free_i = FREE_I(sbi); |
| 955 | |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 956 | if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec) |
Haicheng Li | 81fb5e8 | 2013-05-14 18:20:28 +0800 | [diff] [blame] | 957 | return !test_bit(segno, free_i->free_segmap); |
Jaegeuk Kim | 6037468 | 2013-03-31 13:58:51 +0900 | [diff] [blame] | 958 | return 0; |
| 959 | } |
| 960 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 961 | /* |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 962 | * Find a new segment from the free segments bitmap to right order |
| 963 | * This function should be returned with success, otherwise BUG |
| 964 | */ |
| 965 | static void get_new_segment(struct f2fs_sb_info *sbi, |
| 966 | unsigned int *newseg, bool new_sec, int dir) |
| 967 | { |
| 968 | struct free_segmap_info *free_i = FREE_I(sbi); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 969 | unsigned int segno, secno, zoneno; |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 970 | unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 971 | unsigned int hint = *newseg / sbi->segs_per_sec; |
| 972 | unsigned int old_zoneno = GET_ZONENO_FROM_SEGNO(sbi, *newseg); |
| 973 | unsigned int left_start = hint; |
| 974 | bool init = true; |
| 975 | int go_left = 0; |
| 976 | int i; |
| 977 | |
Chao Yu | 1a118cc | 2015-02-11 18:20:38 +0800 | [diff] [blame] | 978 | spin_lock(&free_i->segmap_lock); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 979 | |
| 980 | if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) { |
| 981 | segno = find_next_zero_bit(free_i->free_segmap, |
Chao Yu | 0ab1435 | 2016-01-22 17:42:06 +0800 | [diff] [blame] | 982 | (hint + 1) * sbi->segs_per_sec, *newseg + 1); |
| 983 | if (segno < (hint + 1) * sbi->segs_per_sec) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 984 | goto got_it; |
| 985 | } |
| 986 | find_other_zone: |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 987 | secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint); |
| 988 | if (secno >= MAIN_SECS(sbi)) { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 989 | if (dir == ALLOC_RIGHT) { |
| 990 | secno = find_next_zero_bit(free_i->free_secmap, |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 991 | MAIN_SECS(sbi), 0); |
| 992 | f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi)); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 993 | } else { |
| 994 | go_left = 1; |
| 995 | left_start = hint - 1; |
| 996 | } |
| 997 | } |
| 998 | if (go_left == 0) |
| 999 | goto skip_left; |
| 1000 | |
| 1001 | while (test_bit(left_start, free_i->free_secmap)) { |
| 1002 | if (left_start > 0) { |
| 1003 | left_start--; |
| 1004 | continue; |
| 1005 | } |
| 1006 | left_start = find_next_zero_bit(free_i->free_secmap, |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 1007 | MAIN_SECS(sbi), 0); |
| 1008 | f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi)); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1009 | break; |
| 1010 | } |
| 1011 | secno = left_start; |
| 1012 | skip_left: |
| 1013 | hint = secno; |
| 1014 | segno = secno * sbi->segs_per_sec; |
| 1015 | zoneno = secno / sbi->secs_per_zone; |
| 1016 | |
| 1017 | /* give up on finding another zone */ |
| 1018 | if (!init) |
| 1019 | goto got_it; |
| 1020 | if (sbi->secs_per_zone == 1) |
| 1021 | goto got_it; |
| 1022 | if (zoneno == old_zoneno) |
| 1023 | goto got_it; |
| 1024 | if (dir == ALLOC_LEFT) { |
| 1025 | if (!go_left && zoneno + 1 >= total_zones) |
| 1026 | goto got_it; |
| 1027 | if (go_left && zoneno == 0) |
| 1028 | goto got_it; |
| 1029 | } |
| 1030 | for (i = 0; i < NR_CURSEG_TYPE; i++) |
| 1031 | if (CURSEG_I(sbi, i)->zone == zoneno) |
| 1032 | break; |
| 1033 | |
| 1034 | if (i < NR_CURSEG_TYPE) { |
| 1035 | /* zone is in user, try another */ |
| 1036 | if (go_left) |
| 1037 | hint = zoneno * sbi->secs_per_zone - 1; |
| 1038 | else if (zoneno + 1 >= total_zones) |
| 1039 | hint = 0; |
| 1040 | else |
| 1041 | hint = (zoneno + 1) * sbi->secs_per_zone; |
| 1042 | init = false; |
| 1043 | goto find_other_zone; |
| 1044 | } |
| 1045 | got_it: |
| 1046 | /* set it as dirty segment in free segmap */ |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 1047 | f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap)); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1048 | __set_inuse(sbi, segno); |
| 1049 | *newseg = segno; |
Chao Yu | 1a118cc | 2015-02-11 18:20:38 +0800 | [diff] [blame] | 1050 | spin_unlock(&free_i->segmap_lock); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1051 | } |
| 1052 | |
| 1053 | static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified) |
| 1054 | { |
| 1055 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
| 1056 | struct summary_footer *sum_footer; |
| 1057 | |
| 1058 | curseg->segno = curseg->next_segno; |
| 1059 | curseg->zone = GET_ZONENO_FROM_SEGNO(sbi, curseg->segno); |
| 1060 | curseg->next_blkoff = 0; |
| 1061 | curseg->next_segno = NULL_SEGNO; |
| 1062 | |
| 1063 | sum_footer = &(curseg->sum_blk->footer); |
| 1064 | memset(sum_footer, 0, sizeof(struct summary_footer)); |
| 1065 | if (IS_DATASEG(type)) |
| 1066 | SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA); |
| 1067 | if (IS_NODESEG(type)) |
| 1068 | SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE); |
| 1069 | __set_sit_entry_type(sbi, type, curseg->segno, modified); |
| 1070 | } |
| 1071 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1072 | /* |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1073 | * Allocate a current working segment. |
| 1074 | * This function always allocates a free segment in LFS manner. |
| 1075 | */ |
| 1076 | static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec) |
| 1077 | { |
| 1078 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
| 1079 | unsigned int segno = curseg->segno; |
| 1080 | int dir = ALLOC_LEFT; |
| 1081 | |
| 1082 | write_sum_page(sbi, curseg->sum_blk, |
Haicheng Li | 81fb5e8 | 2013-05-14 18:20:28 +0800 | [diff] [blame] | 1083 | GET_SUM_BLOCK(sbi, segno)); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1084 | if (type == CURSEG_WARM_DATA || type == CURSEG_COLD_DATA) |
| 1085 | dir = ALLOC_RIGHT; |
| 1086 | |
| 1087 | if (test_opt(sbi, NOHEAP)) |
| 1088 | dir = ALLOC_RIGHT; |
| 1089 | |
| 1090 | get_new_segment(sbi, &segno, new_sec, dir); |
| 1091 | curseg->next_segno = segno; |
| 1092 | reset_curseg(sbi, type, 1); |
| 1093 | curseg->alloc_type = LFS; |
| 1094 | } |
| 1095 | |
| 1096 | static void __next_free_blkoff(struct f2fs_sb_info *sbi, |
| 1097 | struct curseg_info *seg, block_t start) |
| 1098 | { |
| 1099 | struct seg_entry *se = get_seg_entry(sbi, seg->segno); |
Changman Lee | e81c93c | 2013-11-15 13:21:16 +0900 | [diff] [blame] | 1100 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
Jaegeuk Kim | 60a3b78 | 2015-02-10 16:44:29 -0800 | [diff] [blame] | 1101 | unsigned long *target_map = SIT_I(sbi)->tmp_map; |
Changman Lee | e81c93c | 2013-11-15 13:21:16 +0900 | [diff] [blame] | 1102 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; |
| 1103 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; |
| 1104 | int i, pos; |
| 1105 | |
| 1106 | for (i = 0; i < entries; i++) |
| 1107 | target_map[i] = ckpt_map[i] | cur_map[i]; |
| 1108 | |
| 1109 | pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start); |
| 1110 | |
| 1111 | seg->next_blkoff = pos; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1112 | } |
| 1113 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1114 | /* |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1115 | * If a segment is written by LFS manner, next block offset is just obtained |
| 1116 | * by increasing the current block offset. However, if a segment is written by |
| 1117 | * SSR manner, next block offset obtained by calling __next_free_blkoff |
| 1118 | */ |
| 1119 | static void __refresh_next_blkoff(struct f2fs_sb_info *sbi, |
| 1120 | struct curseg_info *seg) |
| 1121 | { |
| 1122 | if (seg->alloc_type == SSR) |
| 1123 | __next_free_blkoff(sbi, seg, seg->next_blkoff + 1); |
| 1124 | else |
| 1125 | seg->next_blkoff++; |
| 1126 | } |
| 1127 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1128 | /* |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 1129 | * This function always allocates a used segment(from dirty seglist) by SSR |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1130 | * manner, so it should recover the existing segment information of valid blocks |
| 1131 | */ |
| 1132 | static void change_curseg(struct f2fs_sb_info *sbi, int type, bool reuse) |
| 1133 | { |
| 1134 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
| 1135 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
| 1136 | unsigned int new_segno = curseg->next_segno; |
| 1137 | struct f2fs_summary_block *sum_node; |
| 1138 | struct page *sum_page; |
| 1139 | |
| 1140 | write_sum_page(sbi, curseg->sum_blk, |
| 1141 | GET_SUM_BLOCK(sbi, curseg->segno)); |
| 1142 | __set_test_and_inuse(sbi, new_segno); |
| 1143 | |
| 1144 | mutex_lock(&dirty_i->seglist_lock); |
| 1145 | __remove_dirty_segment(sbi, new_segno, PRE); |
| 1146 | __remove_dirty_segment(sbi, new_segno, DIRTY); |
| 1147 | mutex_unlock(&dirty_i->seglist_lock); |
| 1148 | |
| 1149 | reset_curseg(sbi, type, 1); |
| 1150 | curseg->alloc_type = SSR; |
| 1151 | __next_free_blkoff(sbi, curseg, 0); |
| 1152 | |
| 1153 | if (reuse) { |
| 1154 | sum_page = get_sum_page(sbi, new_segno); |
| 1155 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); |
| 1156 | memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE); |
| 1157 | f2fs_put_page(sum_page, 1); |
| 1158 | } |
| 1159 | } |
| 1160 | |
Jaegeuk Kim | 4372752 | 2013-02-04 15:11:17 +0900 | [diff] [blame] | 1161 | static int get_ssr_segment(struct f2fs_sb_info *sbi, int type) |
| 1162 | { |
| 1163 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
| 1164 | const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops; |
| 1165 | |
| 1166 | if (IS_NODESEG(type) || !has_not_enough_free_secs(sbi, 0)) |
| 1167 | return v_ops->get_victim(sbi, |
| 1168 | &(curseg)->next_segno, BG_GC, type, SSR); |
| 1169 | |
| 1170 | /* For data segments, let's do SSR more intensively */ |
| 1171 | for (; type >= CURSEG_HOT_DATA; type--) |
| 1172 | if (v_ops->get_victim(sbi, &(curseg)->next_segno, |
| 1173 | BG_GC, type, SSR)) |
| 1174 | return 1; |
| 1175 | return 0; |
| 1176 | } |
| 1177 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1178 | /* |
| 1179 | * flush out current segment and replace it with new segment |
| 1180 | * This function should be returned with success, otherwise BUG |
| 1181 | */ |
| 1182 | static void allocate_segment_by_default(struct f2fs_sb_info *sbi, |
| 1183 | int type, bool force) |
| 1184 | { |
| 1185 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1186 | |
Gu Zheng | 7b40527 | 2013-08-19 09:41:15 +0800 | [diff] [blame] | 1187 | if (force) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1188 | new_curseg(sbi, type, true); |
Gu Zheng | 7b40527 | 2013-08-19 09:41:15 +0800 | [diff] [blame] | 1189 | else if (type == CURSEG_WARM_NODE) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1190 | new_curseg(sbi, type, false); |
Jaegeuk Kim | 6037468 | 2013-03-31 13:58:51 +0900 | [diff] [blame] | 1191 | else if (curseg->alloc_type == LFS && is_next_segment_free(sbi, type)) |
| 1192 | new_curseg(sbi, type, false); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1193 | else if (need_SSR(sbi) && get_ssr_segment(sbi, type)) |
| 1194 | change_curseg(sbi, type, true); |
| 1195 | else |
| 1196 | new_curseg(sbi, type, false); |
Jaegeuk Kim | dcdfff6 | 2013-10-22 20:56:10 +0900 | [diff] [blame] | 1197 | |
| 1198 | stat_inc_seg_type(sbi, curseg); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1199 | } |
| 1200 | |
Jaegeuk Kim | 38aa088 | 2015-01-05 16:02:20 -0800 | [diff] [blame] | 1201 | static void __allocate_new_segments(struct f2fs_sb_info *sbi, int type) |
| 1202 | { |
| 1203 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
| 1204 | unsigned int old_segno; |
| 1205 | |
| 1206 | old_segno = curseg->segno; |
| 1207 | SIT_I(sbi)->s_ops->allocate_segment(sbi, type, true); |
| 1208 | locate_dirty_segment(sbi, old_segno); |
| 1209 | } |
| 1210 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1211 | void allocate_new_segments(struct f2fs_sb_info *sbi) |
| 1212 | { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1213 | int i; |
| 1214 | |
Jaegeuk Kim | 38aa088 | 2015-01-05 16:02:20 -0800 | [diff] [blame] | 1215 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) |
| 1216 | __allocate_new_segments(sbi, i); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1217 | } |
| 1218 | |
| 1219 | static const struct segment_allocation default_salloc_ops = { |
| 1220 | .allocate_segment = allocate_segment_by_default, |
| 1221 | }; |
| 1222 | |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1223 | int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) |
| 1224 | { |
Jaegeuk Kim | f7ef9b8 | 2015-02-09 12:02:44 -0800 | [diff] [blame] | 1225 | __u64 start = F2FS_BYTES_TO_BLK(range->start); |
| 1226 | __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1; |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1227 | unsigned int start_segno, end_segno; |
| 1228 | struct cp_control cpc; |
Chao Yu | c34f42e | 2015-12-23 17:50:30 +0800 | [diff] [blame] | 1229 | int err = 0; |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1230 | |
Jaegeuk Kim | 836b5a6 | 2015-04-30 22:50:06 -0700 | [diff] [blame] | 1231 | if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize) |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1232 | return -EINVAL; |
| 1233 | |
Jan Kara | 9bd27ae | 2014-10-21 14:07:33 +0200 | [diff] [blame] | 1234 | cpc.trimmed = 0; |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 1235 | if (end <= MAIN_BLKADDR(sbi)) |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1236 | goto out; |
| 1237 | |
| 1238 | /* start/end segment number in main_area */ |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 1239 | start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start); |
| 1240 | end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 : |
| 1241 | GET_SEGNO(sbi, end); |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1242 | cpc.reason = CP_DISCARD; |
Jaegeuk Kim | 836b5a6 | 2015-04-30 22:50:06 -0700 | [diff] [blame] | 1243 | cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen)); |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1244 | |
| 1245 | /* do checkpoint to issue discard commands safely */ |
Jaegeuk Kim | bba681c | 2015-01-26 17:41:23 -0800 | [diff] [blame] | 1246 | for (; start_segno <= end_segno; start_segno = cpc.trim_end + 1) { |
| 1247 | cpc.trim_start = start_segno; |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 1248 | |
| 1249 | if (sbi->discard_blks == 0) |
| 1250 | break; |
| 1251 | else if (sbi->discard_blks < BATCHED_TRIM_BLOCKS(sbi)) |
| 1252 | cpc.trim_end = end_segno; |
| 1253 | else |
| 1254 | cpc.trim_end = min_t(unsigned int, |
| 1255 | rounddown(start_segno + |
Jaegeuk Kim | bba681c | 2015-01-26 17:41:23 -0800 | [diff] [blame] | 1256 | BATCHED_TRIM_SEGMENTS(sbi), |
| 1257 | sbi->segs_per_sec) - 1, end_segno); |
| 1258 | |
| 1259 | mutex_lock(&sbi->gc_mutex); |
Chao Yu | c34f42e | 2015-12-23 17:50:30 +0800 | [diff] [blame] | 1260 | err = write_checkpoint(sbi, &cpc); |
Jaegeuk Kim | bba681c | 2015-01-26 17:41:23 -0800 | [diff] [blame] | 1261 | mutex_unlock(&sbi->gc_mutex); |
| 1262 | } |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1263 | out: |
Jaegeuk Kim | f7ef9b8 | 2015-02-09 12:02:44 -0800 | [diff] [blame] | 1264 | range->len = F2FS_BLK_TO_BYTES(cpc.trimmed); |
Chao Yu | c34f42e | 2015-12-23 17:50:30 +0800 | [diff] [blame] | 1265 | return err; |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1266 | } |
| 1267 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1268 | static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type) |
| 1269 | { |
| 1270 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
| 1271 | if (curseg->next_blkoff < sbi->blocks_per_seg) |
| 1272 | return true; |
| 1273 | return false; |
| 1274 | } |
| 1275 | |
| 1276 | static int __get_segment_type_2(struct page *page, enum page_type p_type) |
| 1277 | { |
| 1278 | if (p_type == DATA) |
| 1279 | return CURSEG_HOT_DATA; |
| 1280 | else |
| 1281 | return CURSEG_HOT_NODE; |
| 1282 | } |
| 1283 | |
| 1284 | static int __get_segment_type_4(struct page *page, enum page_type p_type) |
| 1285 | { |
| 1286 | if (p_type == DATA) { |
| 1287 | struct inode *inode = page->mapping->host; |
| 1288 | |
| 1289 | if (S_ISDIR(inode->i_mode)) |
| 1290 | return CURSEG_HOT_DATA; |
| 1291 | else |
| 1292 | return CURSEG_COLD_DATA; |
| 1293 | } else { |
Jaegeuk Kim | a344b9f | 2014-11-05 20:05:53 -0800 | [diff] [blame] | 1294 | if (IS_DNODE(page) && is_cold_node(page)) |
| 1295 | return CURSEG_WARM_NODE; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1296 | else |
| 1297 | return CURSEG_COLD_NODE; |
| 1298 | } |
| 1299 | } |
| 1300 | |
| 1301 | static int __get_segment_type_6(struct page *page, enum page_type p_type) |
| 1302 | { |
| 1303 | if (p_type == DATA) { |
| 1304 | struct inode *inode = page->mapping->host; |
| 1305 | |
| 1306 | if (S_ISDIR(inode->i_mode)) |
| 1307 | return CURSEG_HOT_DATA; |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 1308 | else if (is_cold_data(page) || file_is_cold(inode)) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1309 | return CURSEG_COLD_DATA; |
| 1310 | else |
| 1311 | return CURSEG_WARM_DATA; |
| 1312 | } else { |
| 1313 | if (IS_DNODE(page)) |
| 1314 | return is_cold_node(page) ? CURSEG_WARM_NODE : |
| 1315 | CURSEG_HOT_NODE; |
| 1316 | else |
| 1317 | return CURSEG_COLD_NODE; |
| 1318 | } |
| 1319 | } |
| 1320 | |
| 1321 | static int __get_segment_type(struct page *page, enum page_type p_type) |
| 1322 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1323 | switch (F2FS_P_SB(page)->active_logs) { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1324 | case 2: |
| 1325 | return __get_segment_type_2(page, p_type); |
| 1326 | case 4: |
| 1327 | return __get_segment_type_4(page, p_type); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1328 | } |
Jaegeuk Kim | 12a6714 | 2012-12-21 11:47:05 +0900 | [diff] [blame] | 1329 | /* NR_CURSEG_TYPE(6) logs by default */ |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 1330 | f2fs_bug_on(F2FS_P_SB(page), |
| 1331 | F2FS_P_SB(page)->active_logs != NR_CURSEG_TYPE); |
Jaegeuk Kim | 12a6714 | 2012-12-21 11:47:05 +0900 | [diff] [blame] | 1332 | return __get_segment_type_6(page, p_type); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1333 | } |
| 1334 | |
Jaegeuk Kim | bfad7c2 | 2013-12-16 19:04:05 +0900 | [diff] [blame] | 1335 | void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, |
| 1336 | block_t old_blkaddr, block_t *new_blkaddr, |
| 1337 | struct f2fs_summary *sum, int type) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1338 | { |
| 1339 | struct sit_info *sit_i = SIT_I(sbi); |
| 1340 | struct curseg_info *curseg; |
Jaegeuk Kim | 38aa088 | 2015-01-05 16:02:20 -0800 | [diff] [blame] | 1341 | bool direct_io = (type == CURSEG_DIRECT_IO); |
| 1342 | |
| 1343 | type = direct_io ? CURSEG_WARM_DATA : type; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1344 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1345 | curseg = CURSEG_I(sbi, type); |
| 1346 | |
| 1347 | mutex_lock(&curseg->curseg_mutex); |
Jaegeuk Kim | 21cb1d9 | 2015-03-11 13:42:48 -0400 | [diff] [blame] | 1348 | mutex_lock(&sit_i->sentry_lock); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1349 | |
Jaegeuk Kim | 38aa088 | 2015-01-05 16:02:20 -0800 | [diff] [blame] | 1350 | /* direct_io'ed data is aligned to the segment for better performance */ |
Jaegeuk Kim | 47e70ca | 2015-08-11 10:17:27 -0700 | [diff] [blame] | 1351 | if (direct_io && curseg->next_blkoff && |
| 1352 | !has_not_enough_free_secs(sbi, 0)) |
Jaegeuk Kim | 38aa088 | 2015-01-05 16:02:20 -0800 | [diff] [blame] | 1353 | __allocate_new_segments(sbi, type); |
| 1354 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1355 | *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1356 | |
| 1357 | /* |
| 1358 | * __add_sum_entry should be resided under the curseg_mutex |
| 1359 | * because, this function updates a summary entry in the |
| 1360 | * current summary block. |
| 1361 | */ |
Haicheng Li | e79efe3 | 2013-06-13 16:59:27 +0800 | [diff] [blame] | 1362 | __add_sum_entry(sbi, type, sum); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1363 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1364 | __refresh_next_blkoff(sbi, curseg); |
Jaegeuk Kim | dcdfff6 | 2013-10-22 20:56:10 +0900 | [diff] [blame] | 1365 | |
| 1366 | stat_inc_block_count(sbi, curseg); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1367 | |
Jaegeuk Kim | 5e44381 | 2014-01-28 12:22:14 +0900 | [diff] [blame] | 1368 | if (!__has_curseg_space(sbi, type)) |
| 1369 | sit_i->s_ops->allocate_segment(sbi, type, false); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1370 | /* |
| 1371 | * SIT information should be updated before segment allocation, |
| 1372 | * since SSR needs latest valid block information. |
| 1373 | */ |
| 1374 | refresh_sit_entry(sbi, old_blkaddr, *new_blkaddr); |
Jaegeuk Kim | 5e44381 | 2014-01-28 12:22:14 +0900 | [diff] [blame] | 1375 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1376 | mutex_unlock(&sit_i->sentry_lock); |
| 1377 | |
Jaegeuk Kim | bfad7c2 | 2013-12-16 19:04:05 +0900 | [diff] [blame] | 1378 | if (page && IS_NODESEG(type)) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1379 | fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg)); |
| 1380 | |
Jaegeuk Kim | bfad7c2 | 2013-12-16 19:04:05 +0900 | [diff] [blame] | 1381 | mutex_unlock(&curseg->curseg_mutex); |
| 1382 | } |
| 1383 | |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1384 | static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio) |
Jaegeuk Kim | bfad7c2 | 2013-12-16 19:04:05 +0900 | [diff] [blame] | 1385 | { |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1386 | int type = __get_segment_type(fio->page, fio->type); |
Jaegeuk Kim | bfad7c2 | 2013-12-16 19:04:05 +0900 | [diff] [blame] | 1387 | |
Chao Yu | 7a9d754 | 2016-02-22 18:36:38 +0800 | [diff] [blame] | 1388 | allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr, |
| 1389 | &fio->new_blkaddr, sum, type); |
Jaegeuk Kim | bfad7c2 | 2013-12-16 19:04:05 +0900 | [diff] [blame] | 1390 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1391 | /* writeout dirty page into bdev */ |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1392 | f2fs_submit_page_mbio(fio); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1393 | } |
| 1394 | |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 1395 | void write_meta_page(struct f2fs_sb_info *sbi, struct page *page) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1396 | { |
Jaegeuk Kim | 458e619 | 2013-12-11 13:54:01 +0900 | [diff] [blame] | 1397 | struct f2fs_io_info fio = { |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1398 | .sbi = sbi, |
Jaegeuk Kim | 458e619 | 2013-12-11 13:54:01 +0900 | [diff] [blame] | 1399 | .type = META, |
Jaegeuk Kim | cf04e8e | 2014-12-17 19:33:13 -0800 | [diff] [blame] | 1400 | .rw = WRITE_SYNC | REQ_META | REQ_PRIO, |
Chao Yu | 7a9d754 | 2016-02-22 18:36:38 +0800 | [diff] [blame] | 1401 | .old_blkaddr = page->index, |
| 1402 | .new_blkaddr = page->index, |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1403 | .page = page, |
Jaegeuk Kim | 4375a33 | 2015-04-23 12:04:33 -0700 | [diff] [blame] | 1404 | .encrypted_page = NULL, |
Jaegeuk Kim | 458e619 | 2013-12-11 13:54:01 +0900 | [diff] [blame] | 1405 | }; |
| 1406 | |
Chao Yu | 2b94700 | 2015-10-12 17:04:21 +0800 | [diff] [blame] | 1407 | if (unlikely(page->index >= MAIN_BLKADDR(sbi))) |
| 1408 | fio.rw &= ~REQ_META; |
| 1409 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1410 | set_page_writeback(page); |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1411 | f2fs_submit_page_mbio(&fio); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1412 | } |
| 1413 | |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1414 | void write_node_page(unsigned int nid, struct f2fs_io_info *fio) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1415 | { |
| 1416 | struct f2fs_summary sum; |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1417 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1418 | set_summary(&sum, nid, 0, 0); |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1419 | do_write_page(&sum, fio); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1420 | } |
| 1421 | |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1422 | void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1423 | { |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1424 | struct f2fs_sb_info *sbi = fio->sbi; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1425 | struct f2fs_summary sum; |
| 1426 | struct node_info ni; |
| 1427 | |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 1428 | f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1429 | get_node_info(sbi, dn->nid, &ni); |
| 1430 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1431 | do_write_page(&sum, fio); |
Chao Yu | f28b343 | 2016-02-24 17:16:47 +0800 | [diff] [blame] | 1432 | f2fs_update_data_blkaddr(dn, fio->new_blkaddr); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1433 | } |
| 1434 | |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1435 | void rewrite_data_page(struct f2fs_io_info *fio) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1436 | { |
Chao Yu | 7a9d754 | 2016-02-22 18:36:38 +0800 | [diff] [blame] | 1437 | fio->new_blkaddr = fio->old_blkaddr; |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 1438 | stat_inc_inplace_blocks(fio->sbi); |
| 1439 | f2fs_submit_page_mbio(fio); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1440 | } |
| 1441 | |
Chao Yu | 4356e48 | 2016-02-23 17:52:43 +0800 | [diff] [blame] | 1442 | void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, |
Chao Yu | 19f106b | 2015-05-06 13:08:06 +0800 | [diff] [blame] | 1443 | block_t old_blkaddr, block_t new_blkaddr, |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 1444 | bool recover_curseg, bool recover_newaddr) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1445 | { |
| 1446 | struct sit_info *sit_i = SIT_I(sbi); |
| 1447 | struct curseg_info *curseg; |
| 1448 | unsigned int segno, old_cursegno; |
| 1449 | struct seg_entry *se; |
| 1450 | int type; |
Chao Yu | 19f106b | 2015-05-06 13:08:06 +0800 | [diff] [blame] | 1451 | unsigned short old_blkoff; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1452 | |
| 1453 | segno = GET_SEGNO(sbi, new_blkaddr); |
| 1454 | se = get_seg_entry(sbi, segno); |
| 1455 | type = se->type; |
| 1456 | |
Chao Yu | 19f106b | 2015-05-06 13:08:06 +0800 | [diff] [blame] | 1457 | if (!recover_curseg) { |
| 1458 | /* for recovery flow */ |
| 1459 | if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) { |
| 1460 | if (old_blkaddr == NULL_ADDR) |
| 1461 | type = CURSEG_COLD_DATA; |
| 1462 | else |
| 1463 | type = CURSEG_WARM_DATA; |
| 1464 | } |
| 1465 | } else { |
| 1466 | if (!IS_CURSEG(sbi, segno)) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1467 | type = CURSEG_WARM_DATA; |
| 1468 | } |
Chao Yu | 19f106b | 2015-05-06 13:08:06 +0800 | [diff] [blame] | 1469 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1470 | curseg = CURSEG_I(sbi, type); |
| 1471 | |
| 1472 | mutex_lock(&curseg->curseg_mutex); |
| 1473 | mutex_lock(&sit_i->sentry_lock); |
| 1474 | |
| 1475 | old_cursegno = curseg->segno; |
Chao Yu | 19f106b | 2015-05-06 13:08:06 +0800 | [diff] [blame] | 1476 | old_blkoff = curseg->next_blkoff; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1477 | |
| 1478 | /* change the current segment */ |
| 1479 | if (segno != curseg->segno) { |
| 1480 | curseg->next_segno = segno; |
| 1481 | change_curseg(sbi, type, true); |
| 1482 | } |
| 1483 | |
Jaegeuk Kim | 491c085 | 2014-02-04 13:01:10 +0900 | [diff] [blame] | 1484 | curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); |
Haicheng Li | e79efe3 | 2013-06-13 16:59:27 +0800 | [diff] [blame] | 1485 | __add_sum_entry(sbi, type, sum); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1486 | |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 1487 | if (!recover_curseg || recover_newaddr) |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1488 | update_sit_entry(sbi, new_blkaddr, 1); |
| 1489 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) |
| 1490 | update_sit_entry(sbi, old_blkaddr, -1); |
| 1491 | |
| 1492 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); |
| 1493 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr)); |
| 1494 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1495 | locate_dirty_segment(sbi, old_cursegno); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1496 | |
Chao Yu | 19f106b | 2015-05-06 13:08:06 +0800 | [diff] [blame] | 1497 | if (recover_curseg) { |
| 1498 | if (old_cursegno != curseg->segno) { |
| 1499 | curseg->next_segno = old_cursegno; |
| 1500 | change_curseg(sbi, type, true); |
| 1501 | } |
| 1502 | curseg->next_blkoff = old_blkoff; |
| 1503 | } |
| 1504 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1505 | mutex_unlock(&sit_i->sentry_lock); |
| 1506 | mutex_unlock(&curseg->curseg_mutex); |
| 1507 | } |
| 1508 | |
Chao Yu | 528e345 | 2015-05-28 19:15:35 +0800 | [diff] [blame] | 1509 | void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, |
| 1510 | block_t old_addr, block_t new_addr, |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 1511 | unsigned char version, bool recover_curseg, |
| 1512 | bool recover_newaddr) |
Chao Yu | 528e345 | 2015-05-28 19:15:35 +0800 | [diff] [blame] | 1513 | { |
| 1514 | struct f2fs_summary sum; |
| 1515 | |
| 1516 | set_summary(&sum, dn->nid, dn->ofs_in_node, version); |
| 1517 | |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 1518 | __f2fs_replace_block(sbi, &sum, old_addr, new_addr, |
| 1519 | recover_curseg, recover_newaddr); |
Chao Yu | 528e345 | 2015-05-28 19:15:35 +0800 | [diff] [blame] | 1520 | |
Chao Yu | f28b343 | 2016-02-24 17:16:47 +0800 | [diff] [blame] | 1521 | f2fs_update_data_blkaddr(dn, new_addr); |
Chao Yu | 528e345 | 2015-05-28 19:15:35 +0800 | [diff] [blame] | 1522 | } |
| 1523 | |
Jaegeuk Kim | 93dfe2a | 2013-11-30 12:51:14 +0900 | [diff] [blame] | 1524 | void f2fs_wait_on_page_writeback(struct page *page, |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 1525 | enum page_type type, bool ordered) |
Jaegeuk Kim | 93dfe2a | 2013-11-30 12:51:14 +0900 | [diff] [blame] | 1526 | { |
Jaegeuk Kim | 93dfe2a | 2013-11-30 12:51:14 +0900 | [diff] [blame] | 1527 | if (PageWriteback(page)) { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1528 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
| 1529 | |
Chao Yu | 0c3a579 | 2016-01-18 18:28:11 +0800 | [diff] [blame] | 1530 | f2fs_submit_merged_bio_cond(sbi, NULL, page, 0, type, WRITE); |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 1531 | if (ordered) |
| 1532 | wait_on_page_writeback(page); |
| 1533 | else |
| 1534 | wait_for_stable_page(page); |
Jaegeuk Kim | 93dfe2a | 2013-11-30 12:51:14 +0900 | [diff] [blame] | 1535 | } |
| 1536 | } |
| 1537 | |
Chao Yu | 08b39fb | 2015-10-08 13:27:34 +0800 | [diff] [blame] | 1538 | void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *sbi, |
| 1539 | block_t blkaddr) |
| 1540 | { |
| 1541 | struct page *cpage; |
| 1542 | |
| 1543 | if (blkaddr == NEW_ADDR) |
| 1544 | return; |
| 1545 | |
| 1546 | f2fs_bug_on(sbi, blkaddr == NULL_ADDR); |
| 1547 | |
| 1548 | cpage = find_lock_page(META_MAPPING(sbi), blkaddr); |
| 1549 | if (cpage) { |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 1550 | f2fs_wait_on_page_writeback(cpage, DATA, true); |
Chao Yu | 08b39fb | 2015-10-08 13:27:34 +0800 | [diff] [blame] | 1551 | f2fs_put_page(cpage, 1); |
| 1552 | } |
| 1553 | } |
| 1554 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1555 | static int read_compacted_summaries(struct f2fs_sb_info *sbi) |
| 1556 | { |
| 1557 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| 1558 | struct curseg_info *seg_i; |
| 1559 | unsigned char *kaddr; |
| 1560 | struct page *page; |
| 1561 | block_t start; |
| 1562 | int i, j, offset; |
| 1563 | |
| 1564 | start = start_sum_block(sbi); |
| 1565 | |
| 1566 | page = get_meta_page(sbi, start++); |
| 1567 | kaddr = (unsigned char *)page_address(page); |
| 1568 | |
| 1569 | /* Step 1: restore nat cache */ |
| 1570 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 1571 | memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1572 | |
| 1573 | /* Step 2: restore sit cache */ |
| 1574 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 1575 | memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1576 | offset = 2 * SUM_JOURNAL_SIZE; |
| 1577 | |
| 1578 | /* Step 3: restore summary entries */ |
| 1579 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { |
| 1580 | unsigned short blk_off; |
| 1581 | unsigned int segno; |
| 1582 | |
| 1583 | seg_i = CURSEG_I(sbi, i); |
| 1584 | segno = le32_to_cpu(ckpt->cur_data_segno[i]); |
| 1585 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]); |
| 1586 | seg_i->next_segno = segno; |
| 1587 | reset_curseg(sbi, i, 0); |
| 1588 | seg_i->alloc_type = ckpt->alloc_type[i]; |
| 1589 | seg_i->next_blkoff = blk_off; |
| 1590 | |
| 1591 | if (seg_i->alloc_type == SSR) |
| 1592 | blk_off = sbi->blocks_per_seg; |
| 1593 | |
| 1594 | for (j = 0; j < blk_off; j++) { |
| 1595 | struct f2fs_summary *s; |
| 1596 | s = (struct f2fs_summary *)(kaddr + offset); |
| 1597 | seg_i->sum_blk->entries[j] = *s; |
| 1598 | offset += SUMMARY_SIZE; |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1599 | if (offset + SUMMARY_SIZE <= PAGE_SIZE - |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1600 | SUM_FOOTER_SIZE) |
| 1601 | continue; |
| 1602 | |
| 1603 | f2fs_put_page(page, 1); |
| 1604 | page = NULL; |
| 1605 | |
| 1606 | page = get_meta_page(sbi, start++); |
| 1607 | kaddr = (unsigned char *)page_address(page); |
| 1608 | offset = 0; |
| 1609 | } |
| 1610 | } |
| 1611 | f2fs_put_page(page, 1); |
| 1612 | return 0; |
| 1613 | } |
| 1614 | |
| 1615 | static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) |
| 1616 | { |
| 1617 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| 1618 | struct f2fs_summary_block *sum; |
| 1619 | struct curseg_info *curseg; |
| 1620 | struct page *new; |
| 1621 | unsigned short blk_off; |
| 1622 | unsigned int segno = 0; |
| 1623 | block_t blk_addr = 0; |
| 1624 | |
| 1625 | /* get segment number and block addr */ |
| 1626 | if (IS_DATASEG(type)) { |
| 1627 | segno = le32_to_cpu(ckpt->cur_data_segno[type]); |
| 1628 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type - |
| 1629 | CURSEG_HOT_DATA]); |
Jaegeuk Kim | 119ee91 | 2015-01-29 11:45:33 -0800 | [diff] [blame] | 1630 | if (__exist_node_summaries(sbi)) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1631 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_TYPE, type); |
| 1632 | else |
| 1633 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type); |
| 1634 | } else { |
| 1635 | segno = le32_to_cpu(ckpt->cur_node_segno[type - |
| 1636 | CURSEG_HOT_NODE]); |
| 1637 | blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type - |
| 1638 | CURSEG_HOT_NODE]); |
Jaegeuk Kim | 119ee91 | 2015-01-29 11:45:33 -0800 | [diff] [blame] | 1639 | if (__exist_node_summaries(sbi)) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1640 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE, |
| 1641 | type - CURSEG_HOT_NODE); |
| 1642 | else |
| 1643 | blk_addr = GET_SUM_BLOCK(sbi, segno); |
| 1644 | } |
| 1645 | |
| 1646 | new = get_meta_page(sbi, blk_addr); |
| 1647 | sum = (struct f2fs_summary_block *)page_address(new); |
| 1648 | |
| 1649 | if (IS_NODESEG(type)) { |
Jaegeuk Kim | 119ee91 | 2015-01-29 11:45:33 -0800 | [diff] [blame] | 1650 | if (__exist_node_summaries(sbi)) { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1651 | struct f2fs_summary *ns = &sum->entries[0]; |
| 1652 | int i; |
| 1653 | for (i = 0; i < sbi->blocks_per_seg; i++, ns++) { |
| 1654 | ns->version = 0; |
| 1655 | ns->ofs_in_node = 0; |
| 1656 | } |
| 1657 | } else { |
Gu Zheng | d653788 | 2014-03-07 18:43:36 +0800 | [diff] [blame] | 1658 | int err; |
| 1659 | |
| 1660 | err = restore_node_summary(sbi, segno, sum); |
| 1661 | if (err) { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1662 | f2fs_put_page(new, 1); |
Gu Zheng | d653788 | 2014-03-07 18:43:36 +0800 | [diff] [blame] | 1663 | return err; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1664 | } |
| 1665 | } |
| 1666 | } |
| 1667 | |
| 1668 | /* set uncompleted segment to curseg */ |
| 1669 | curseg = CURSEG_I(sbi, type); |
| 1670 | mutex_lock(&curseg->curseg_mutex); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 1671 | |
| 1672 | /* update journal info */ |
| 1673 | down_write(&curseg->journal_rwsem); |
| 1674 | memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE); |
| 1675 | up_write(&curseg->journal_rwsem); |
| 1676 | |
| 1677 | memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE); |
| 1678 | memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1679 | curseg->next_segno = segno; |
| 1680 | reset_curseg(sbi, type, 0); |
| 1681 | curseg->alloc_type = ckpt->alloc_type[type]; |
| 1682 | curseg->next_blkoff = blk_off; |
| 1683 | mutex_unlock(&curseg->curseg_mutex); |
| 1684 | f2fs_put_page(new, 1); |
| 1685 | return 0; |
| 1686 | } |
| 1687 | |
| 1688 | static int restore_curseg_summaries(struct f2fs_sb_info *sbi) |
| 1689 | { |
| 1690 | int type = CURSEG_HOT_DATA; |
Chao Yu | e4fc5fb | 2014-03-17 16:36:24 +0800 | [diff] [blame] | 1691 | int err; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1692 | |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 1693 | if (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_COMPACT_SUM_FLAG)) { |
Chao Yu | 3fa06d7 | 2014-12-09 14:21:46 +0800 | [diff] [blame] | 1694 | int npages = npages_for_summary_flush(sbi, true); |
| 1695 | |
| 1696 | if (npages >= 2) |
| 1697 | ra_meta_pages(sbi, start_sum_block(sbi), npages, |
Chao Yu | 26879fb | 2015-10-12 17:05:59 +0800 | [diff] [blame] | 1698 | META_CP, true); |
Chao Yu | 3fa06d7 | 2014-12-09 14:21:46 +0800 | [diff] [blame] | 1699 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1700 | /* restore for compacted data summary */ |
| 1701 | if (read_compacted_summaries(sbi)) |
| 1702 | return -EINVAL; |
| 1703 | type = CURSEG_HOT_NODE; |
| 1704 | } |
| 1705 | |
Jaegeuk Kim | 119ee91 | 2015-01-29 11:45:33 -0800 | [diff] [blame] | 1706 | if (__exist_node_summaries(sbi)) |
Chao Yu | 3fa06d7 | 2014-12-09 14:21:46 +0800 | [diff] [blame] | 1707 | ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type), |
Chao Yu | 26879fb | 2015-10-12 17:05:59 +0800 | [diff] [blame] | 1708 | NR_CURSEG_TYPE - type, META_CP, true); |
Chao Yu | 3fa06d7 | 2014-12-09 14:21:46 +0800 | [diff] [blame] | 1709 | |
Chao Yu | e4fc5fb | 2014-03-17 16:36:24 +0800 | [diff] [blame] | 1710 | for (; type <= CURSEG_COLD_NODE; type++) { |
| 1711 | err = read_normal_summaries(sbi, type); |
| 1712 | if (err) |
| 1713 | return err; |
| 1714 | } |
| 1715 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1716 | return 0; |
| 1717 | } |
| 1718 | |
| 1719 | static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr) |
| 1720 | { |
| 1721 | struct page *page; |
| 1722 | unsigned char *kaddr; |
| 1723 | struct f2fs_summary *summary; |
| 1724 | struct curseg_info *seg_i; |
| 1725 | int written_size = 0; |
| 1726 | int i, j; |
| 1727 | |
| 1728 | page = grab_meta_page(sbi, blkaddr++); |
| 1729 | kaddr = (unsigned char *)page_address(page); |
| 1730 | |
| 1731 | /* Step 1: write nat cache */ |
| 1732 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 1733 | memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1734 | written_size += SUM_JOURNAL_SIZE; |
| 1735 | |
| 1736 | /* Step 2: write sit cache */ |
| 1737 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 1738 | memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1739 | written_size += SUM_JOURNAL_SIZE; |
| 1740 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1741 | /* Step 3: write summary entries */ |
| 1742 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { |
| 1743 | unsigned short blkoff; |
| 1744 | seg_i = CURSEG_I(sbi, i); |
| 1745 | if (sbi->ckpt->alloc_type[i] == SSR) |
| 1746 | blkoff = sbi->blocks_per_seg; |
| 1747 | else |
| 1748 | blkoff = curseg_blkoff(sbi, i); |
| 1749 | |
| 1750 | for (j = 0; j < blkoff; j++) { |
| 1751 | if (!page) { |
| 1752 | page = grab_meta_page(sbi, blkaddr++); |
| 1753 | kaddr = (unsigned char *)page_address(page); |
| 1754 | written_size = 0; |
| 1755 | } |
| 1756 | summary = (struct f2fs_summary *)(kaddr + written_size); |
| 1757 | *summary = seg_i->sum_blk->entries[j]; |
| 1758 | written_size += SUMMARY_SIZE; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1759 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1760 | if (written_size + SUMMARY_SIZE <= PAGE_SIZE - |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1761 | SUM_FOOTER_SIZE) |
| 1762 | continue; |
| 1763 | |
Chao Yu | e8d61a7 | 2013-10-24 15:08:28 +0800 | [diff] [blame] | 1764 | set_page_dirty(page); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1765 | f2fs_put_page(page, 1); |
| 1766 | page = NULL; |
| 1767 | } |
| 1768 | } |
Chao Yu | e8d61a7 | 2013-10-24 15:08:28 +0800 | [diff] [blame] | 1769 | if (page) { |
| 1770 | set_page_dirty(page); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1771 | f2fs_put_page(page, 1); |
Chao Yu | e8d61a7 | 2013-10-24 15:08:28 +0800 | [diff] [blame] | 1772 | } |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1773 | } |
| 1774 | |
| 1775 | static void write_normal_summaries(struct f2fs_sb_info *sbi, |
| 1776 | block_t blkaddr, int type) |
| 1777 | { |
| 1778 | int i, end; |
| 1779 | if (IS_DATASEG(type)) |
| 1780 | end = type + NR_CURSEG_DATA_TYPE; |
| 1781 | else |
| 1782 | end = type + NR_CURSEG_NODE_TYPE; |
| 1783 | |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 1784 | for (i = type; i < end; i++) |
| 1785 | write_current_sum_page(sbi, i, blkaddr + (i - type)); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1786 | } |
| 1787 | |
| 1788 | void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk) |
| 1789 | { |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 1790 | if (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_COMPACT_SUM_FLAG)) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1791 | write_compacted_summaries(sbi, start_blk); |
| 1792 | else |
| 1793 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA); |
| 1794 | } |
| 1795 | |
| 1796 | void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk) |
| 1797 | { |
Jaegeuk Kim | 119ee91 | 2015-01-29 11:45:33 -0800 | [diff] [blame] | 1798 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1799 | } |
| 1800 | |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 1801 | int lookup_journal_in_cursum(struct f2fs_journal *journal, int type, |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1802 | unsigned int val, int alloc) |
| 1803 | { |
| 1804 | int i; |
| 1805 | |
| 1806 | if (type == NAT_JOURNAL) { |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 1807 | for (i = 0; i < nats_in_cursum(journal); i++) { |
| 1808 | if (le32_to_cpu(nid_in_journal(journal, i)) == val) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1809 | return i; |
| 1810 | } |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 1811 | if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL)) |
| 1812 | return update_nats_in_cursum(journal, 1); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1813 | } else if (type == SIT_JOURNAL) { |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 1814 | for (i = 0; i < sits_in_cursum(journal); i++) |
| 1815 | if (le32_to_cpu(segno_in_journal(journal, i)) == val) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1816 | return i; |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 1817 | if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL)) |
| 1818 | return update_sits_in_cursum(journal, 1); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1819 | } |
| 1820 | return -1; |
| 1821 | } |
| 1822 | |
| 1823 | static struct page *get_current_sit_page(struct f2fs_sb_info *sbi, |
| 1824 | unsigned int segno) |
| 1825 | { |
Gu Zheng | 2cc2218 | 2014-10-20 17:45:49 +0800 | [diff] [blame] | 1826 | return get_meta_page(sbi, current_sit_addr(sbi, segno)); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1827 | } |
| 1828 | |
| 1829 | static struct page *get_next_sit_page(struct f2fs_sb_info *sbi, |
| 1830 | unsigned int start) |
| 1831 | { |
| 1832 | struct sit_info *sit_i = SIT_I(sbi); |
| 1833 | struct page *src_page, *dst_page; |
| 1834 | pgoff_t src_off, dst_off; |
| 1835 | void *src_addr, *dst_addr; |
| 1836 | |
| 1837 | src_off = current_sit_addr(sbi, start); |
| 1838 | dst_off = next_sit_addr(sbi, src_off); |
| 1839 | |
| 1840 | /* get current sit block page without lock */ |
| 1841 | src_page = get_meta_page(sbi, src_off); |
| 1842 | dst_page = grab_meta_page(sbi, dst_off); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 1843 | f2fs_bug_on(sbi, PageDirty(src_page)); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1844 | |
| 1845 | src_addr = page_address(src_page); |
| 1846 | dst_addr = page_address(dst_page); |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1847 | memcpy(dst_addr, src_addr, PAGE_SIZE); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1848 | |
| 1849 | set_page_dirty(dst_page); |
| 1850 | f2fs_put_page(src_page, 1); |
| 1851 | |
| 1852 | set_to_next_sit(sit_i, start); |
| 1853 | |
| 1854 | return dst_page; |
| 1855 | } |
| 1856 | |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1857 | static struct sit_entry_set *grab_sit_entry_set(void) |
| 1858 | { |
| 1859 | struct sit_entry_set *ses = |
Jaegeuk Kim | 80c5450 | 2015-08-20 08:51:56 -0700 | [diff] [blame] | 1860 | f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS); |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1861 | |
| 1862 | ses->entry_cnt = 0; |
| 1863 | INIT_LIST_HEAD(&ses->set_list); |
| 1864 | return ses; |
| 1865 | } |
| 1866 | |
| 1867 | static void release_sit_entry_set(struct sit_entry_set *ses) |
| 1868 | { |
| 1869 | list_del(&ses->set_list); |
| 1870 | kmem_cache_free(sit_entry_set_slab, ses); |
| 1871 | } |
| 1872 | |
| 1873 | static void adjust_sit_entry_set(struct sit_entry_set *ses, |
| 1874 | struct list_head *head) |
| 1875 | { |
| 1876 | struct sit_entry_set *next = ses; |
| 1877 | |
| 1878 | if (list_is_last(&ses->set_list, head)) |
| 1879 | return; |
| 1880 | |
| 1881 | list_for_each_entry_continue(next, head, set_list) |
| 1882 | if (ses->entry_cnt <= next->entry_cnt) |
| 1883 | break; |
| 1884 | |
| 1885 | list_move_tail(&ses->set_list, &next->set_list); |
| 1886 | } |
| 1887 | |
| 1888 | static void add_sit_entry(unsigned int segno, struct list_head *head) |
| 1889 | { |
| 1890 | struct sit_entry_set *ses; |
| 1891 | unsigned int start_segno = START_SEGNO(segno); |
| 1892 | |
| 1893 | list_for_each_entry(ses, head, set_list) { |
| 1894 | if (ses->start_segno == start_segno) { |
| 1895 | ses->entry_cnt++; |
| 1896 | adjust_sit_entry_set(ses, head); |
| 1897 | return; |
| 1898 | } |
| 1899 | } |
| 1900 | |
| 1901 | ses = grab_sit_entry_set(); |
| 1902 | |
| 1903 | ses->start_segno = start_segno; |
| 1904 | ses->entry_cnt++; |
| 1905 | list_add(&ses->set_list, head); |
| 1906 | } |
| 1907 | |
| 1908 | static void add_sits_in_set(struct f2fs_sb_info *sbi) |
| 1909 | { |
| 1910 | struct f2fs_sm_info *sm_info = SM_I(sbi); |
| 1911 | struct list_head *set_list = &sm_info->sit_entry_set; |
| 1912 | unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap; |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1913 | unsigned int segno; |
| 1914 | |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 1915 | for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi)) |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1916 | add_sit_entry(segno, set_list); |
| 1917 | } |
| 1918 | |
| 1919 | static void remove_sits_in_journal(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1920 | { |
| 1921 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 1922 | struct f2fs_journal *journal = curseg->journal; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1923 | int i; |
| 1924 | |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 1925 | down_write(&curseg->journal_rwsem); |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 1926 | for (i = 0; i < sits_in_cursum(journal); i++) { |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1927 | unsigned int segno; |
| 1928 | bool dirtied; |
| 1929 | |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 1930 | segno = le32_to_cpu(segno_in_journal(journal, i)); |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1931 | dirtied = __mark_sit_entry_dirty(sbi, segno); |
| 1932 | |
| 1933 | if (!dirtied) |
| 1934 | add_sit_entry(segno, &SM_I(sbi)->sit_entry_set); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1935 | } |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 1936 | update_sits_in_cursum(journal, -i); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 1937 | up_write(&curseg->journal_rwsem); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1938 | } |
| 1939 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1940 | /* |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1941 | * CP calls this function, which flushes SIT entries including sit_journal, |
| 1942 | * and moves prefree segs to free segs. |
| 1943 | */ |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1944 | void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1945 | { |
| 1946 | struct sit_info *sit_i = SIT_I(sbi); |
| 1947 | unsigned long *bitmap = sit_i->dirty_sentries_bitmap; |
| 1948 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 1949 | struct f2fs_journal *journal = curseg->journal; |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1950 | struct sit_entry_set *ses, *tmp; |
| 1951 | struct list_head *head = &SM_I(sbi)->sit_entry_set; |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1952 | bool to_journal = true; |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1953 | struct seg_entry *se; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1954 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1955 | mutex_lock(&sit_i->sentry_lock); |
| 1956 | |
Wanpeng Li | 2b11a74 | 2015-02-27 16:52:50 +0800 | [diff] [blame] | 1957 | if (!sit_i->dirty_sentries) |
| 1958 | goto out; |
| 1959 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1960 | /* |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1961 | * add and account sit entries of dirty bitmap in sit entry |
| 1962 | * set temporarily |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1963 | */ |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1964 | add_sits_in_set(sbi); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1965 | |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1966 | /* |
| 1967 | * if there are no enough space in journal to store dirty sit |
| 1968 | * entries, remove all entries from journal and add and account |
| 1969 | * them in sit entry set. |
| 1970 | */ |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 1971 | if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL)) |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1972 | remove_sits_in_journal(sbi); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1973 | |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1974 | /* |
| 1975 | * there are two steps to flush sit entries: |
| 1976 | * #1, flush sit entries to journal in current cold data summary block. |
| 1977 | * #2, flush sit entries to sit page. |
| 1978 | */ |
| 1979 | list_for_each_entry_safe(ses, tmp, head, set_list) { |
Jaegeuk Kim | 4a257ed | 2014-10-16 11:43:30 -0700 | [diff] [blame] | 1980 | struct page *page = NULL; |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1981 | struct f2fs_sit_block *raw_sit = NULL; |
| 1982 | unsigned int start_segno = ses->start_segno; |
| 1983 | unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK, |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 1984 | (unsigned long)MAIN_SEGS(sbi)); |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1985 | unsigned int segno = start_segno; |
Jaegeuk Kim | b295555 | 2013-11-12 14:49:56 +0900 | [diff] [blame] | 1986 | |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1987 | if (to_journal && |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 1988 | !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL)) |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1989 | to_journal = false; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1990 | |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 1991 | if (to_journal) { |
| 1992 | down_write(&curseg->journal_rwsem); |
| 1993 | } else { |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1994 | page = get_next_sit_page(sbi, start_segno); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 1995 | raw_sit = page_address(page); |
| 1996 | } |
| 1997 | |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 1998 | /* flush dirty sit entries in region of current sit set */ |
| 1999 | for_each_set_bit_from(segno, bitmap, end) { |
| 2000 | int offset, sit_offset; |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 2001 | |
| 2002 | se = get_seg_entry(sbi, segno); |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2003 | |
| 2004 | /* add discard candidates */ |
Jaegeuk Kim | d7bc248 | 2014-12-12 13:53:41 -0800 | [diff] [blame] | 2005 | if (cpc->reason != CP_DISCARD) { |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 2006 | cpc->trim_start = segno; |
| 2007 | add_discard_addrs(sbi, cpc); |
| 2008 | } |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2009 | |
| 2010 | if (to_journal) { |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2011 | offset = lookup_journal_in_cursum(journal, |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2012 | SIT_JOURNAL, segno, 1); |
| 2013 | f2fs_bug_on(sbi, offset < 0); |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2014 | segno_in_journal(journal, offset) = |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2015 | cpu_to_le32(segno); |
| 2016 | seg_info_to_raw_sit(se, |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2017 | &sit_in_journal(journal, offset)); |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2018 | } else { |
| 2019 | sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); |
| 2020 | seg_info_to_raw_sit(se, |
| 2021 | &raw_sit->entries[sit_offset]); |
| 2022 | } |
| 2023 | |
| 2024 | __clear_bit(segno, bitmap); |
| 2025 | sit_i->dirty_sentries--; |
| 2026 | ses->entry_cnt--; |
| 2027 | } |
| 2028 | |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2029 | if (to_journal) |
| 2030 | up_write(&curseg->journal_rwsem); |
| 2031 | else |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2032 | f2fs_put_page(page, 1); |
| 2033 | |
| 2034 | f2fs_bug_on(sbi, ses->entry_cnt); |
| 2035 | release_sit_entry_set(ses); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2036 | } |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2037 | |
| 2038 | f2fs_bug_on(sbi, !list_empty(head)); |
| 2039 | f2fs_bug_on(sbi, sit_i->dirty_sentries); |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2040 | out: |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 2041 | if (cpc->reason == CP_DISCARD) { |
| 2042 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) |
| 2043 | add_discard_addrs(sbi, cpc); |
| 2044 | } |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2045 | mutex_unlock(&sit_i->sentry_lock); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2046 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2047 | set_prefree_as_free_segments(sbi); |
| 2048 | } |
| 2049 | |
| 2050 | static int build_sit_info(struct f2fs_sb_info *sbi) |
| 2051 | { |
| 2052 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); |
| 2053 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| 2054 | struct sit_info *sit_i; |
| 2055 | unsigned int sit_segs, start; |
| 2056 | char *src_bitmap, *dst_bitmap; |
| 2057 | unsigned int bitmap_size; |
| 2058 | |
| 2059 | /* allocate memory for SIT information */ |
| 2060 | sit_i = kzalloc(sizeof(struct sit_info), GFP_KERNEL); |
| 2061 | if (!sit_i) |
| 2062 | return -ENOMEM; |
| 2063 | |
| 2064 | SM_I(sbi)->sit_info = sit_i; |
| 2065 | |
Jaegeuk Kim | 39307a8 | 2015-09-22 13:50:47 -0700 | [diff] [blame] | 2066 | sit_i->sentries = f2fs_kvzalloc(MAIN_SEGS(sbi) * |
| 2067 | sizeof(struct seg_entry), GFP_KERNEL); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2068 | if (!sit_i->sentries) |
| 2069 | return -ENOMEM; |
| 2070 | |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 2071 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
Jaegeuk Kim | 39307a8 | 2015-09-22 13:50:47 -0700 | [diff] [blame] | 2072 | sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2073 | if (!sit_i->dirty_sentries_bitmap) |
| 2074 | return -ENOMEM; |
| 2075 | |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 2076 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2077 | sit_i->sentries[start].cur_valid_map |
| 2078 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
| 2079 | sit_i->sentries[start].ckpt_valid_map |
| 2080 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 2081 | sit_i->sentries[start].discard_map |
| 2082 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
| 2083 | if (!sit_i->sentries[start].cur_valid_map || |
| 2084 | !sit_i->sentries[start].ckpt_valid_map || |
| 2085 | !sit_i->sentries[start].discard_map) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2086 | return -ENOMEM; |
| 2087 | } |
| 2088 | |
Jaegeuk Kim | 60a3b78 | 2015-02-10 16:44:29 -0800 | [diff] [blame] | 2089 | sit_i->tmp_map = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
| 2090 | if (!sit_i->tmp_map) |
| 2091 | return -ENOMEM; |
| 2092 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2093 | if (sbi->segs_per_sec > 1) { |
Jaegeuk Kim | 39307a8 | 2015-09-22 13:50:47 -0700 | [diff] [blame] | 2094 | sit_i->sec_entries = f2fs_kvzalloc(MAIN_SECS(sbi) * |
| 2095 | sizeof(struct sec_entry), GFP_KERNEL); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2096 | if (!sit_i->sec_entries) |
| 2097 | return -ENOMEM; |
| 2098 | } |
| 2099 | |
| 2100 | /* get information related with SIT */ |
| 2101 | sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1; |
| 2102 | |
| 2103 | /* setup SIT bitmap from ckeckpoint pack */ |
| 2104 | bitmap_size = __bitmap_size(sbi, SIT_BITMAP); |
| 2105 | src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP); |
| 2106 | |
Alexandru Gheorghiu | 79b5793 | 2013-03-28 02:24:53 +0200 | [diff] [blame] | 2107 | dst_bitmap = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2108 | if (!dst_bitmap) |
| 2109 | return -ENOMEM; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2110 | |
| 2111 | /* init SIT information */ |
| 2112 | sit_i->s_ops = &default_salloc_ops; |
| 2113 | |
| 2114 | sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr); |
| 2115 | sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg; |
| 2116 | sit_i->written_valid_blocks = le64_to_cpu(ckpt->valid_block_count); |
| 2117 | sit_i->sit_bitmap = dst_bitmap; |
| 2118 | sit_i->bitmap_size = bitmap_size; |
| 2119 | sit_i->dirty_sentries = 0; |
| 2120 | sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK; |
| 2121 | sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time); |
| 2122 | sit_i->mounted_time = CURRENT_TIME_SEC.tv_sec; |
| 2123 | mutex_init(&sit_i->sentry_lock); |
| 2124 | return 0; |
| 2125 | } |
| 2126 | |
| 2127 | static int build_free_segmap(struct f2fs_sb_info *sbi) |
| 2128 | { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2129 | struct free_segmap_info *free_i; |
| 2130 | unsigned int bitmap_size, sec_bitmap_size; |
| 2131 | |
| 2132 | /* allocate memory for free segmap information */ |
| 2133 | free_i = kzalloc(sizeof(struct free_segmap_info), GFP_KERNEL); |
| 2134 | if (!free_i) |
| 2135 | return -ENOMEM; |
| 2136 | |
| 2137 | SM_I(sbi)->free_info = free_i; |
| 2138 | |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 2139 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
Jaegeuk Kim | 39307a8 | 2015-09-22 13:50:47 -0700 | [diff] [blame] | 2140 | free_i->free_segmap = f2fs_kvmalloc(bitmap_size, GFP_KERNEL); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2141 | if (!free_i->free_segmap) |
| 2142 | return -ENOMEM; |
| 2143 | |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 2144 | sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
Jaegeuk Kim | 39307a8 | 2015-09-22 13:50:47 -0700 | [diff] [blame] | 2145 | free_i->free_secmap = f2fs_kvmalloc(sec_bitmap_size, GFP_KERNEL); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2146 | if (!free_i->free_secmap) |
| 2147 | return -ENOMEM; |
| 2148 | |
| 2149 | /* set all segments as dirty temporarily */ |
| 2150 | memset(free_i->free_segmap, 0xff, bitmap_size); |
| 2151 | memset(free_i->free_secmap, 0xff, sec_bitmap_size); |
| 2152 | |
| 2153 | /* init free segmap information */ |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 2154 | free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi)); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2155 | free_i->free_segments = 0; |
| 2156 | free_i->free_sections = 0; |
Chao Yu | 1a118cc | 2015-02-11 18:20:38 +0800 | [diff] [blame] | 2157 | spin_lock_init(&free_i->segmap_lock); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2158 | return 0; |
| 2159 | } |
| 2160 | |
| 2161 | static int build_curseg(struct f2fs_sb_info *sbi) |
| 2162 | { |
Namjae Jeon | 1042d60 | 2012-12-01 10:56:13 +0900 | [diff] [blame] | 2163 | struct curseg_info *array; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2164 | int i; |
| 2165 | |
Fabian Frederick | b434bab | 2014-06-23 18:39:15 +0200 | [diff] [blame] | 2166 | array = kcalloc(NR_CURSEG_TYPE, sizeof(*array), GFP_KERNEL); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2167 | if (!array) |
| 2168 | return -ENOMEM; |
| 2169 | |
| 2170 | SM_I(sbi)->curseg_array = array; |
| 2171 | |
| 2172 | for (i = 0; i < NR_CURSEG_TYPE; i++) { |
| 2173 | mutex_init(&array[i].curseg_mutex); |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 2174 | array[i].sum_blk = kzalloc(PAGE_SIZE, GFP_KERNEL); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2175 | if (!array[i].sum_blk) |
| 2176 | return -ENOMEM; |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2177 | init_rwsem(&array[i].journal_rwsem); |
| 2178 | array[i].journal = kzalloc(sizeof(struct f2fs_journal), |
| 2179 | GFP_KERNEL); |
| 2180 | if (!array[i].journal) |
| 2181 | return -ENOMEM; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2182 | array[i].segno = NULL_SEGNO; |
| 2183 | array[i].next_blkoff = 0; |
| 2184 | } |
| 2185 | return restore_curseg_summaries(sbi); |
| 2186 | } |
| 2187 | |
| 2188 | static void build_sit_entries(struct f2fs_sb_info *sbi) |
| 2189 | { |
| 2190 | struct sit_info *sit_i = SIT_I(sbi); |
| 2191 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2192 | struct f2fs_journal *journal = curseg->journal; |
Chao Yu | 74de593 | 2013-11-22 09:09:59 +0800 | [diff] [blame] | 2193 | int sit_blk_cnt = SIT_BLK_CNT(sbi); |
| 2194 | unsigned int i, start, end; |
| 2195 | unsigned int readed, start_blk = 0; |
Chao Yu | e9f5b8b | 2016-02-14 18:54:33 +0800 | [diff] [blame] | 2196 | int nrpages = MAX_BIO_BLOCKS(sbi) * 8; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2197 | |
Chao Yu | 74de593 | 2013-11-22 09:09:59 +0800 | [diff] [blame] | 2198 | do { |
Chao Yu | 26879fb | 2015-10-12 17:05:59 +0800 | [diff] [blame] | 2199 | readed = ra_meta_pages(sbi, start_blk, nrpages, META_SIT, true); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2200 | |
Chao Yu | 74de593 | 2013-11-22 09:09:59 +0800 | [diff] [blame] | 2201 | start = start_blk * sit_i->sents_per_block; |
| 2202 | end = (start_blk + readed) * sit_i->sents_per_block; |
| 2203 | |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 2204 | for (; start < end && start < MAIN_SEGS(sbi); start++) { |
Chao Yu | 74de593 | 2013-11-22 09:09:59 +0800 | [diff] [blame] | 2205 | struct seg_entry *se = &sit_i->sentries[start]; |
| 2206 | struct f2fs_sit_block *sit_blk; |
| 2207 | struct f2fs_sit_entry sit; |
| 2208 | struct page *page; |
| 2209 | |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2210 | down_read(&curseg->journal_rwsem); |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2211 | for (i = 0; i < sits_in_cursum(journal); i++) { |
| 2212 | if (le32_to_cpu(segno_in_journal(journal, i)) |
Chris Fries | 6c311ec | 2014-01-17 14:44:39 -0600 | [diff] [blame] | 2213 | == start) { |
Chao Yu | dfc08a1 | 2016-02-14 18:50:40 +0800 | [diff] [blame] | 2214 | sit = sit_in_journal(journal, i); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2215 | up_read(&curseg->journal_rwsem); |
Chao Yu | 74de593 | 2013-11-22 09:09:59 +0800 | [diff] [blame] | 2216 | goto got_it; |
| 2217 | } |
| 2218 | } |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2219 | up_read(&curseg->journal_rwsem); |
Chao Yu | 74de593 | 2013-11-22 09:09:59 +0800 | [diff] [blame] | 2220 | |
| 2221 | page = get_current_sit_page(sbi, start); |
| 2222 | sit_blk = (struct f2fs_sit_block *)page_address(page); |
| 2223 | sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; |
| 2224 | f2fs_put_page(page, 1); |
| 2225 | got_it: |
| 2226 | check_block_count(sbi, start, &sit); |
| 2227 | seg_info_from_raw_sit(se, &sit); |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 2228 | |
| 2229 | /* build discard map only one time */ |
| 2230 | memcpy(se->discard_map, se->cur_valid_map, SIT_VBLOCK_MAP_SIZE); |
| 2231 | sbi->discard_blks += sbi->blocks_per_seg - se->valid_blocks; |
| 2232 | |
Chao Yu | 74de593 | 2013-11-22 09:09:59 +0800 | [diff] [blame] | 2233 | if (sbi->segs_per_sec > 1) { |
| 2234 | struct sec_entry *e = get_sec_entry(sbi, start); |
| 2235 | e->valid_blocks += se->valid_blocks; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2236 | } |
| 2237 | } |
Chao Yu | 74de593 | 2013-11-22 09:09:59 +0800 | [diff] [blame] | 2238 | start_blk += readed; |
| 2239 | } while (start_blk < sit_blk_cnt); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2240 | } |
| 2241 | |
| 2242 | static void init_free_segmap(struct f2fs_sb_info *sbi) |
| 2243 | { |
| 2244 | unsigned int start; |
| 2245 | int type; |
| 2246 | |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 2247 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2248 | struct seg_entry *sentry = get_seg_entry(sbi, start); |
| 2249 | if (!sentry->valid_blocks) |
| 2250 | __set_free(sbi, start); |
| 2251 | } |
| 2252 | |
| 2253 | /* set use the current segments */ |
| 2254 | for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) { |
| 2255 | struct curseg_info *curseg_t = CURSEG_I(sbi, type); |
| 2256 | __set_test_and_inuse(sbi, curseg_t->segno); |
| 2257 | } |
| 2258 | } |
| 2259 | |
| 2260 | static void init_dirty_segmap(struct f2fs_sb_info *sbi) |
| 2261 | { |
| 2262 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
| 2263 | struct free_segmap_info *free_i = FREE_I(sbi); |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 2264 | unsigned int segno = 0, offset = 0; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2265 | unsigned short valid_blocks; |
| 2266 | |
Namjae Jeon | 8736fbf | 2013-06-16 09:49:11 +0900 | [diff] [blame] | 2267 | while (1) { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2268 | /* find dirty segment based on free segmap */ |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 2269 | segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset); |
| 2270 | if (segno >= MAIN_SEGS(sbi)) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2271 | break; |
| 2272 | offset = segno + 1; |
| 2273 | valid_blocks = get_valid_blocks(sbi, segno, 0); |
Jaegeuk Kim | ec325b5 | 2014-09-02 16:24:11 -0700 | [diff] [blame] | 2274 | if (valid_blocks == sbi->blocks_per_seg || !valid_blocks) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2275 | continue; |
Jaegeuk Kim | ec325b5 | 2014-09-02 16:24:11 -0700 | [diff] [blame] | 2276 | if (valid_blocks > sbi->blocks_per_seg) { |
| 2277 | f2fs_bug_on(sbi, 1); |
| 2278 | continue; |
| 2279 | } |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2280 | mutex_lock(&dirty_i->seglist_lock); |
| 2281 | __locate_dirty_segment(sbi, segno, DIRTY); |
| 2282 | mutex_unlock(&dirty_i->seglist_lock); |
| 2283 | } |
| 2284 | } |
| 2285 | |
Jaegeuk Kim | 5ec4e49 | 2013-03-31 13:26:03 +0900 | [diff] [blame] | 2286 | static int init_victim_secmap(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2287 | { |
| 2288 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 2289 | unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2290 | |
Jaegeuk Kim | 39307a8 | 2015-09-22 13:50:47 -0700 | [diff] [blame] | 2291 | dirty_i->victim_secmap = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
Jaegeuk Kim | 5ec4e49 | 2013-03-31 13:26:03 +0900 | [diff] [blame] | 2292 | if (!dirty_i->victim_secmap) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2293 | return -ENOMEM; |
| 2294 | return 0; |
| 2295 | } |
| 2296 | |
| 2297 | static int build_dirty_segmap(struct f2fs_sb_info *sbi) |
| 2298 | { |
| 2299 | struct dirty_seglist_info *dirty_i; |
| 2300 | unsigned int bitmap_size, i; |
| 2301 | |
| 2302 | /* allocate memory for dirty segments list information */ |
| 2303 | dirty_i = kzalloc(sizeof(struct dirty_seglist_info), GFP_KERNEL); |
| 2304 | if (!dirty_i) |
| 2305 | return -ENOMEM; |
| 2306 | |
| 2307 | SM_I(sbi)->dirty_info = dirty_i; |
| 2308 | mutex_init(&dirty_i->seglist_lock); |
| 2309 | |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 2310 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2311 | |
| 2312 | for (i = 0; i < NR_DIRTY_TYPE; i++) { |
Jaegeuk Kim | 39307a8 | 2015-09-22 13:50:47 -0700 | [diff] [blame] | 2313 | dirty_i->dirty_segmap[i] = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2314 | if (!dirty_i->dirty_segmap[i]) |
| 2315 | return -ENOMEM; |
| 2316 | } |
| 2317 | |
| 2318 | init_dirty_segmap(sbi); |
Jaegeuk Kim | 5ec4e49 | 2013-03-31 13:26:03 +0900 | [diff] [blame] | 2319 | return init_victim_secmap(sbi); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2320 | } |
| 2321 | |
Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 2322 | /* |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2323 | * Update min, max modified time for cost-benefit GC algorithm |
| 2324 | */ |
| 2325 | static void init_min_max_mtime(struct f2fs_sb_info *sbi) |
| 2326 | { |
| 2327 | struct sit_info *sit_i = SIT_I(sbi); |
| 2328 | unsigned int segno; |
| 2329 | |
| 2330 | mutex_lock(&sit_i->sentry_lock); |
| 2331 | |
| 2332 | sit_i->min_mtime = LLONG_MAX; |
| 2333 | |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 2334 | for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2335 | unsigned int i; |
| 2336 | unsigned long long mtime = 0; |
| 2337 | |
| 2338 | for (i = 0; i < sbi->segs_per_sec; i++) |
| 2339 | mtime += get_seg_entry(sbi, segno + i)->mtime; |
| 2340 | |
| 2341 | mtime = div_u64(mtime, sbi->segs_per_sec); |
| 2342 | |
| 2343 | if (sit_i->min_mtime > mtime) |
| 2344 | sit_i->min_mtime = mtime; |
| 2345 | } |
| 2346 | sit_i->max_mtime = get_mtime(sbi); |
| 2347 | mutex_unlock(&sit_i->sentry_lock); |
| 2348 | } |
| 2349 | |
| 2350 | int build_segment_manager(struct f2fs_sb_info *sbi) |
| 2351 | { |
| 2352 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); |
| 2353 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
Namjae Jeon | 1042d60 | 2012-12-01 10:56:13 +0900 | [diff] [blame] | 2354 | struct f2fs_sm_info *sm_info; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2355 | int err; |
| 2356 | |
| 2357 | sm_info = kzalloc(sizeof(struct f2fs_sm_info), GFP_KERNEL); |
| 2358 | if (!sm_info) |
| 2359 | return -ENOMEM; |
| 2360 | |
| 2361 | /* init sm info */ |
| 2362 | sbi->sm_info = sm_info; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2363 | sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
| 2364 | sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); |
| 2365 | sm_info->segment_count = le32_to_cpu(raw_super->segment_count); |
| 2366 | sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); |
| 2367 | sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); |
| 2368 | sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main); |
| 2369 | sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); |
Jaegeuk Kim | 58c4103 | 2014-03-19 14:17:21 +0900 | [diff] [blame] | 2370 | sm_info->rec_prefree_segments = sm_info->main_segments * |
| 2371 | DEF_RECLAIM_PREFREE_SEGMENTS / 100; |
Jaegeuk Kim | 9b5f136 | 2014-09-16 18:30:54 -0700 | [diff] [blame] | 2372 | sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; |
Jaegeuk Kim | 216fbd6 | 2013-11-07 13:13:42 +0900 | [diff] [blame] | 2373 | sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; |
Jaegeuk Kim | c1ce1b0 | 2014-09-10 16:53:02 -0700 | [diff] [blame] | 2374 | sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2375 | |
Jaegeuk Kim | 7fd9e54 | 2013-11-15 13:55:58 +0900 | [diff] [blame] | 2376 | INIT_LIST_HEAD(&sm_info->discard_list); |
| 2377 | sm_info->nr_discards = 0; |
| 2378 | sm_info->max_discards = 0; |
| 2379 | |
Jaegeuk Kim | bba681c | 2015-01-26 17:41:23 -0800 | [diff] [blame] | 2380 | sm_info->trim_sections = DEF_BATCHED_TRIM_SECTIONS; |
| 2381 | |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2382 | INIT_LIST_HEAD(&sm_info->sit_entry_set); |
| 2383 | |
Gu Zheng | b270ad6 | 2014-04-11 17:49:55 +0800 | [diff] [blame] | 2384 | if (test_opt(sbi, FLUSH_MERGE) && !f2fs_readonly(sbi->sb)) { |
Gu Zheng | 2163d19 | 2014-04-27 14:21:33 +0800 | [diff] [blame] | 2385 | err = create_flush_cmd_control(sbi); |
| 2386 | if (err) |
Gu Zheng | a688b9d9e | 2014-04-27 14:21:21 +0800 | [diff] [blame] | 2387 | return err; |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 2388 | } |
| 2389 | |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2390 | err = build_sit_info(sbi); |
| 2391 | if (err) |
| 2392 | return err; |
| 2393 | err = build_free_segmap(sbi); |
| 2394 | if (err) |
| 2395 | return err; |
| 2396 | err = build_curseg(sbi); |
| 2397 | if (err) |
| 2398 | return err; |
| 2399 | |
| 2400 | /* reinit free segmap based on SIT */ |
| 2401 | build_sit_entries(sbi); |
| 2402 | |
| 2403 | init_free_segmap(sbi); |
| 2404 | err = build_dirty_segmap(sbi); |
| 2405 | if (err) |
| 2406 | return err; |
| 2407 | |
| 2408 | init_min_max_mtime(sbi); |
| 2409 | return 0; |
| 2410 | } |
| 2411 | |
| 2412 | static void discard_dirty_segmap(struct f2fs_sb_info *sbi, |
| 2413 | enum dirty_type dirty_type) |
| 2414 | { |
| 2415 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
| 2416 | |
| 2417 | mutex_lock(&dirty_i->seglist_lock); |
Jaegeuk Kim | 39307a8 | 2015-09-22 13:50:47 -0700 | [diff] [blame] | 2418 | kvfree(dirty_i->dirty_segmap[dirty_type]); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2419 | dirty_i->nr_dirty[dirty_type] = 0; |
| 2420 | mutex_unlock(&dirty_i->seglist_lock); |
| 2421 | } |
| 2422 | |
Jaegeuk Kim | 5ec4e49 | 2013-03-31 13:26:03 +0900 | [diff] [blame] | 2423 | static void destroy_victim_secmap(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2424 | { |
| 2425 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
Jaegeuk Kim | 39307a8 | 2015-09-22 13:50:47 -0700 | [diff] [blame] | 2426 | kvfree(dirty_i->victim_secmap); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2427 | } |
| 2428 | |
| 2429 | static void destroy_dirty_segmap(struct f2fs_sb_info *sbi) |
| 2430 | { |
| 2431 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
| 2432 | int i; |
| 2433 | |
| 2434 | if (!dirty_i) |
| 2435 | return; |
| 2436 | |
| 2437 | /* discard pre-free/dirty segments list */ |
| 2438 | for (i = 0; i < NR_DIRTY_TYPE; i++) |
| 2439 | discard_dirty_segmap(sbi, i); |
| 2440 | |
Jaegeuk Kim | 5ec4e49 | 2013-03-31 13:26:03 +0900 | [diff] [blame] | 2441 | destroy_victim_secmap(sbi); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2442 | SM_I(sbi)->dirty_info = NULL; |
| 2443 | kfree(dirty_i); |
| 2444 | } |
| 2445 | |
| 2446 | static void destroy_curseg(struct f2fs_sb_info *sbi) |
| 2447 | { |
| 2448 | struct curseg_info *array = SM_I(sbi)->curseg_array; |
| 2449 | int i; |
| 2450 | |
| 2451 | if (!array) |
| 2452 | return; |
| 2453 | SM_I(sbi)->curseg_array = NULL; |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2454 | for (i = 0; i < NR_CURSEG_TYPE; i++) { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2455 | kfree(array[i].sum_blk); |
Chao Yu | b7ad751 | 2016-02-19 18:08:46 +0800 | [diff] [blame] | 2456 | kfree(array[i].journal); |
| 2457 | } |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2458 | kfree(array); |
| 2459 | } |
| 2460 | |
| 2461 | static void destroy_free_segmap(struct f2fs_sb_info *sbi) |
| 2462 | { |
| 2463 | struct free_segmap_info *free_i = SM_I(sbi)->free_info; |
| 2464 | if (!free_i) |
| 2465 | return; |
| 2466 | SM_I(sbi)->free_info = NULL; |
Jaegeuk Kim | 39307a8 | 2015-09-22 13:50:47 -0700 | [diff] [blame] | 2467 | kvfree(free_i->free_segmap); |
| 2468 | kvfree(free_i->free_secmap); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2469 | kfree(free_i); |
| 2470 | } |
| 2471 | |
| 2472 | static void destroy_sit_info(struct f2fs_sb_info *sbi) |
| 2473 | { |
| 2474 | struct sit_info *sit_i = SIT_I(sbi); |
| 2475 | unsigned int start; |
| 2476 | |
| 2477 | if (!sit_i) |
| 2478 | return; |
| 2479 | |
| 2480 | if (sit_i->sentries) { |
Jaegeuk Kim | 7cd8558 | 2014-09-23 11:23:01 -0700 | [diff] [blame] | 2481 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2482 | kfree(sit_i->sentries[start].cur_valid_map); |
| 2483 | kfree(sit_i->sentries[start].ckpt_valid_map); |
Jaegeuk Kim | a66cdd9 | 2015-04-30 22:37:50 -0700 | [diff] [blame] | 2484 | kfree(sit_i->sentries[start].discard_map); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2485 | } |
| 2486 | } |
Jaegeuk Kim | 60a3b78 | 2015-02-10 16:44:29 -0800 | [diff] [blame] | 2487 | kfree(sit_i->tmp_map); |
| 2488 | |
Jaegeuk Kim | 39307a8 | 2015-09-22 13:50:47 -0700 | [diff] [blame] | 2489 | kvfree(sit_i->sentries); |
| 2490 | kvfree(sit_i->sec_entries); |
| 2491 | kvfree(sit_i->dirty_sentries_bitmap); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2492 | |
| 2493 | SM_I(sbi)->sit_info = NULL; |
| 2494 | kfree(sit_i->sit_bitmap); |
| 2495 | kfree(sit_i); |
| 2496 | } |
| 2497 | |
| 2498 | void destroy_segment_manager(struct f2fs_sb_info *sbi) |
| 2499 | { |
| 2500 | struct f2fs_sm_info *sm_info = SM_I(sbi); |
Gu Zheng | a688b9d9e | 2014-04-27 14:21:21 +0800 | [diff] [blame] | 2501 | |
Chao Yu | 3b03f72 | 2013-11-06 09:12:04 +0800 | [diff] [blame] | 2502 | if (!sm_info) |
| 2503 | return; |
Gu Zheng | 2163d19 | 2014-04-27 14:21:33 +0800 | [diff] [blame] | 2504 | destroy_flush_cmd_control(sbi); |
Jaegeuk Kim | 351df4b | 2012-11-02 17:09:16 +0900 | [diff] [blame] | 2505 | destroy_dirty_segmap(sbi); |
| 2506 | destroy_curseg(sbi); |
| 2507 | destroy_free_segmap(sbi); |
| 2508 | destroy_sit_info(sbi); |
| 2509 | sbi->sm_info = NULL; |
| 2510 | kfree(sm_info); |
| 2511 | } |
Jaegeuk Kim | 7fd9e54 | 2013-11-15 13:55:58 +0900 | [diff] [blame] | 2512 | |
| 2513 | int __init create_segment_manager_caches(void) |
| 2514 | { |
| 2515 | discard_entry_slab = f2fs_kmem_cache_create("discard_entry", |
Gu Zheng | e8512d2 | 2014-03-07 18:43:28 +0800 | [diff] [blame] | 2516 | sizeof(struct discard_entry)); |
Jaegeuk Kim | 7fd9e54 | 2013-11-15 13:55:58 +0900 | [diff] [blame] | 2517 | if (!discard_entry_slab) |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2518 | goto fail; |
| 2519 | |
| 2520 | sit_entry_set_slab = f2fs_kmem_cache_create("sit_entry_set", |
Changman Lee | c9ee008 | 2014-11-21 15:42:07 +0900 | [diff] [blame] | 2521 | sizeof(struct sit_entry_set)); |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2522 | if (!sit_entry_set_slab) |
| 2523 | goto destory_discard_entry; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 2524 | |
| 2525 | inmem_entry_slab = f2fs_kmem_cache_create("inmem_page_entry", |
| 2526 | sizeof(struct inmem_pages)); |
| 2527 | if (!inmem_entry_slab) |
| 2528 | goto destroy_sit_entry_set; |
Jaegeuk Kim | 7fd9e54 | 2013-11-15 13:55:58 +0900 | [diff] [blame] | 2529 | return 0; |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2530 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 2531 | destroy_sit_entry_set: |
| 2532 | kmem_cache_destroy(sit_entry_set_slab); |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2533 | destory_discard_entry: |
| 2534 | kmem_cache_destroy(discard_entry_slab); |
| 2535 | fail: |
| 2536 | return -ENOMEM; |
Jaegeuk Kim | 7fd9e54 | 2013-11-15 13:55:58 +0900 | [diff] [blame] | 2537 | } |
| 2538 | |
| 2539 | void destroy_segment_manager_caches(void) |
| 2540 | { |
Chao Yu | 184a5cd | 2014-09-04 18:13:01 +0800 | [diff] [blame] | 2541 | kmem_cache_destroy(sit_entry_set_slab); |
Jaegeuk Kim | 7fd9e54 | 2013-11-15 13:55:58 +0900 | [diff] [blame] | 2542 | kmem_cache_destroy(discard_entry_slab); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 2543 | kmem_cache_destroy(inmem_entry_slab); |
Jaegeuk Kim | 7fd9e54 | 2013-11-15 13:55:58 +0900 | [diff] [blame] | 2544 | } |