Commit | Line | Data |
---|---|---|
0a8165d7 | 1 | /* |
127e670a JK |
2 | * fs/f2fs/checkpoint.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/bio.h> | |
13 | #include <linux/mpage.h> | |
14 | #include <linux/writeback.h> | |
15 | #include <linux/blkdev.h> | |
16 | #include <linux/f2fs_fs.h> | |
17 | #include <linux/pagevec.h> | |
18 | #include <linux/swap.h> | |
19 | ||
20 | #include "f2fs.h" | |
21 | #include "node.h" | |
22 | #include "segment.h" | |
2af4bd6c | 23 | #include <trace/events/f2fs.h> |
127e670a | 24 | |
6451e041 | 25 | static struct kmem_cache *ino_entry_slab; |
127e670a JK |
26 | static struct kmem_cache *inode_entry_slab; |
27 | ||
0a8165d7 | 28 | /* |
127e670a JK |
29 | * We guarantee no failure on the returned page. |
30 | */ | |
31 | struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) | |
32 | { | |
9df27d98 | 33 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a JK |
34 | struct page *page = NULL; |
35 | repeat: | |
bde44686 | 36 | page = grab_cache_page(mapping, index); |
127e670a JK |
37 | if (!page) { |
38 | cond_resched(); | |
39 | goto repeat; | |
40 | } | |
bde44686 | 41 | f2fs_wait_on_page_writeback(page, META); |
127e670a JK |
42 | SetPageUptodate(page); |
43 | return page; | |
44 | } | |
45 | ||
0a8165d7 | 46 | /* |
127e670a JK |
47 | * We guarantee no failure on the returned page. |
48 | */ | |
49 | struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) | |
50 | { | |
9df27d98 | 51 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a JK |
52 | struct page *page; |
53 | repeat: | |
54 | page = grab_cache_page(mapping, index); | |
55 | if (!page) { | |
56 | cond_resched(); | |
57 | goto repeat; | |
58 | } | |
393ff91f JK |
59 | if (PageUptodate(page)) |
60 | goto out; | |
61 | ||
93dfe2ac JK |
62 | if (f2fs_submit_page_bio(sbi, page, index, |
63 | READ_SYNC | REQ_META | REQ_PRIO)) | |
127e670a | 64 | goto repeat; |
127e670a | 65 | |
393ff91f | 66 | lock_page(page); |
6bacf52f | 67 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
68 | f2fs_put_page(page, 1); |
69 | goto repeat; | |
70 | } | |
393ff91f | 71 | out: |
127e670a JK |
72 | return page; |
73 | } | |
74 | ||
b49ad51e | 75 | static inline int get_max_meta_blks(struct f2fs_sb_info *sbi, int type) |
662befda CY |
76 | { |
77 | switch (type) { | |
78 | case META_NAT: | |
79 | return NM_I(sbi)->max_nid / NAT_ENTRY_PER_BLOCK; | |
80 | case META_SIT: | |
81 | return SIT_BLK_CNT(sbi); | |
81c1a0f1 | 82 | case META_SSA: |
662befda CY |
83 | case META_CP: |
84 | return 0; | |
85 | default: | |
86 | BUG(); | |
87 | } | |
88 | } | |
89 | ||
90 | /* | |
81c1a0f1 | 91 | * Readahead CP/NAT/SIT/SSA pages |
662befda CY |
92 | */ |
93 | int ra_meta_pages(struct f2fs_sb_info *sbi, int start, int nrpages, int type) | |
94 | { | |
95 | block_t prev_blk_addr = 0; | |
96 | struct page *page; | |
97 | int blkno = start; | |
98 | int max_blks = get_max_meta_blks(sbi, type); | |
99 | ||
100 | struct f2fs_io_info fio = { | |
101 | .type = META, | |
102 | .rw = READ_SYNC | REQ_META | REQ_PRIO | |
103 | }; | |
104 | ||
105 | for (; nrpages-- > 0; blkno++) { | |
106 | block_t blk_addr; | |
107 | ||
108 | switch (type) { | |
109 | case META_NAT: | |
110 | /* get nat block addr */ | |
111 | if (unlikely(blkno >= max_blks)) | |
112 | blkno = 0; | |
113 | blk_addr = current_nat_addr(sbi, | |
114 | blkno * NAT_ENTRY_PER_BLOCK); | |
115 | break; | |
116 | case META_SIT: | |
117 | /* get sit block addr */ | |
118 | if (unlikely(blkno >= max_blks)) | |
119 | goto out; | |
120 | blk_addr = current_sit_addr(sbi, | |
121 | blkno * SIT_ENTRY_PER_BLOCK); | |
122 | if (blkno != start && prev_blk_addr + 1 != blk_addr) | |
123 | goto out; | |
124 | prev_blk_addr = blk_addr; | |
125 | break; | |
81c1a0f1 | 126 | case META_SSA: |
662befda | 127 | case META_CP: |
81c1a0f1 | 128 | /* get ssa/cp block addr */ |
662befda CY |
129 | blk_addr = blkno; |
130 | break; | |
131 | default: | |
132 | BUG(); | |
133 | } | |
134 | ||
135 | page = grab_cache_page(META_MAPPING(sbi), blk_addr); | |
136 | if (!page) | |
137 | continue; | |
138 | if (PageUptodate(page)) { | |
662befda CY |
139 | f2fs_put_page(page, 1); |
140 | continue; | |
141 | } | |
142 | ||
143 | f2fs_submit_page_mbio(sbi, page, blk_addr, &fio); | |
662befda CY |
144 | f2fs_put_page(page, 0); |
145 | } | |
146 | out: | |
147 | f2fs_submit_merged_bio(sbi, META, READ); | |
148 | return blkno - start; | |
149 | } | |
150 | ||
127e670a JK |
151 | static int f2fs_write_meta_page(struct page *page, |
152 | struct writeback_control *wbc) | |
153 | { | |
154 | struct inode *inode = page->mapping->host; | |
155 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
127e670a | 156 | |
ecda0de3 CY |
157 | trace_f2fs_writepage(page, META); |
158 | ||
203681f6 | 159 | if (unlikely(sbi->por_doing)) |
cfb271d4 | 160 | goto redirty_out; |
cfb271d4 CY |
161 | if (wbc->for_reclaim) |
162 | goto redirty_out; | |
127e670a | 163 | |
203681f6 JK |
164 | /* Should not write any meta pages, if any IO error was occurred */ |
165 | if (unlikely(is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ERROR_FLAG))) | |
166 | goto no_write; | |
127e670a | 167 | |
3cb5ad15 | 168 | f2fs_wait_on_page_writeback(page, META); |
577e3495 | 169 | write_meta_page(sbi, page); |
203681f6 | 170 | no_write: |
577e3495 JK |
171 | dec_page_count(sbi, F2FS_DIRTY_META); |
172 | unlock_page(page); | |
173 | return 0; | |
cfb271d4 CY |
174 | |
175 | redirty_out: | |
76f60268 | 176 | redirty_page_for_writepage(wbc, page); |
cfb271d4 | 177 | return AOP_WRITEPAGE_ACTIVATE; |
127e670a JK |
178 | } |
179 | ||
180 | static int f2fs_write_meta_pages(struct address_space *mapping, | |
181 | struct writeback_control *wbc) | |
182 | { | |
183 | struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); | |
50c8cdb3 | 184 | long diff, written; |
127e670a | 185 | |
e5748434 CY |
186 | trace_f2fs_writepages(mapping->host, wbc, META); |
187 | ||
5459aa97 | 188 | /* collect a number of dirty meta pages and write together */ |
50c8cdb3 JK |
189 | if (wbc->for_kupdate || |
190 | get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) | |
d3baf95d | 191 | goto skip_write; |
127e670a JK |
192 | |
193 | /* if mounting is failed, skip writing node pages */ | |
194 | mutex_lock(&sbi->cp_mutex); | |
50c8cdb3 JK |
195 | diff = nr_pages_to_write(sbi, META, wbc); |
196 | written = sync_meta_pages(sbi, META, wbc->nr_to_write); | |
127e670a | 197 | mutex_unlock(&sbi->cp_mutex); |
50c8cdb3 | 198 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); |
127e670a | 199 | return 0; |
d3baf95d JK |
200 | |
201 | skip_write: | |
202 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); | |
203 | return 0; | |
127e670a JK |
204 | } |
205 | ||
206 | long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, | |
207 | long nr_to_write) | |
208 | { | |
9df27d98 | 209 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a JK |
210 | pgoff_t index = 0, end = LONG_MAX; |
211 | struct pagevec pvec; | |
212 | long nwritten = 0; | |
213 | struct writeback_control wbc = { | |
214 | .for_reclaim = 0, | |
215 | }; | |
216 | ||
217 | pagevec_init(&pvec, 0); | |
218 | ||
219 | while (index <= end) { | |
220 | int i, nr_pages; | |
221 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, | |
222 | PAGECACHE_TAG_DIRTY, | |
223 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
cfb271d4 | 224 | if (unlikely(nr_pages == 0)) |
127e670a JK |
225 | break; |
226 | ||
227 | for (i = 0; i < nr_pages; i++) { | |
228 | struct page *page = pvec.pages[i]; | |
203681f6 | 229 | |
127e670a | 230 | lock_page(page); |
203681f6 JK |
231 | |
232 | if (unlikely(page->mapping != mapping)) { | |
233 | continue_unlock: | |
234 | unlock_page(page); | |
235 | continue; | |
236 | } | |
237 | if (!PageDirty(page)) { | |
238 | /* someone wrote it for us */ | |
239 | goto continue_unlock; | |
240 | } | |
241 | ||
242 | if (!clear_page_dirty_for_io(page)) | |
243 | goto continue_unlock; | |
244 | ||
577e3495 JK |
245 | if (f2fs_write_meta_page(page, &wbc)) { |
246 | unlock_page(page); | |
247 | break; | |
248 | } | |
cfb271d4 CY |
249 | nwritten++; |
250 | if (unlikely(nwritten >= nr_to_write)) | |
127e670a JK |
251 | break; |
252 | } | |
253 | pagevec_release(&pvec); | |
254 | cond_resched(); | |
255 | } | |
256 | ||
257 | if (nwritten) | |
458e6197 | 258 | f2fs_submit_merged_bio(sbi, type, WRITE); |
127e670a JK |
259 | |
260 | return nwritten; | |
261 | } | |
262 | ||
263 | static int f2fs_set_meta_page_dirty(struct page *page) | |
264 | { | |
265 | struct address_space *mapping = page->mapping; | |
266 | struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); | |
267 | ||
26c6b887 JK |
268 | trace_f2fs_set_page_dirty(page, META); |
269 | ||
127e670a JK |
270 | SetPageUptodate(page); |
271 | if (!PageDirty(page)) { | |
272 | __set_page_dirty_nobuffers(page); | |
273 | inc_page_count(sbi, F2FS_DIRTY_META); | |
127e670a JK |
274 | return 1; |
275 | } | |
276 | return 0; | |
277 | } | |
278 | ||
279 | const struct address_space_operations f2fs_meta_aops = { | |
280 | .writepage = f2fs_write_meta_page, | |
281 | .writepages = f2fs_write_meta_pages, | |
282 | .set_page_dirty = f2fs_set_meta_page_dirty, | |
283 | }; | |
284 | ||
6451e041 | 285 | static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 286 | { |
6451e041 | 287 | struct ino_entry *new, *e; |
953e6cc6 | 288 | |
6451e041 | 289 | new = f2fs_kmem_cache_alloc(ino_entry_slab, GFP_ATOMIC); |
953e6cc6 JK |
290 | new->ino = ino; |
291 | ||
6451e041 JK |
292 | spin_lock(&sbi->ino_lock[type]); |
293 | list_for_each_entry(e, &sbi->ino_list[type], list) { | |
953e6cc6 | 294 | if (e->ino == ino) { |
6451e041 JK |
295 | spin_unlock(&sbi->ino_lock[type]); |
296 | kmem_cache_free(ino_entry_slab, new); | |
953e6cc6 JK |
297 | return; |
298 | } | |
299 | if (e->ino > ino) | |
300 | break; | |
301 | } | |
302 | ||
303 | /* add new entry into list which is sorted by inode number */ | |
304 | list_add_tail(&new->list, &e->list); | |
6451e041 | 305 | spin_unlock(&sbi->ino_lock[type]); |
953e6cc6 JK |
306 | } |
307 | ||
6451e041 | 308 | static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 309 | { |
6451e041 | 310 | struct ino_entry *e; |
953e6cc6 | 311 | |
6451e041 JK |
312 | spin_lock(&sbi->ino_lock[type]); |
313 | list_for_each_entry(e, &sbi->ino_list[type], list) { | |
953e6cc6 JK |
314 | if (e->ino == ino) { |
315 | list_del(&e->list); | |
316 | sbi->n_orphans--; | |
6451e041 JK |
317 | spin_unlock(&sbi->ino_lock[type]); |
318 | kmem_cache_free(ino_entry_slab, e); | |
953e6cc6 JK |
319 | return; |
320 | } | |
321 | } | |
6451e041 | 322 | spin_unlock(&sbi->ino_lock[type]); |
953e6cc6 JK |
323 | } |
324 | ||
cbd56e7d | 325 | int acquire_orphan_inode(struct f2fs_sb_info *sbi) |
127e670a | 326 | { |
127e670a JK |
327 | int err = 0; |
328 | ||
6451e041 | 329 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
0d47c1ad | 330 | if (unlikely(sbi->n_orphans >= sbi->max_orphans)) |
127e670a | 331 | err = -ENOSPC; |
cbd56e7d JK |
332 | else |
333 | sbi->n_orphans++; | |
6451e041 | 334 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
0d47c1ad | 335 | |
127e670a JK |
336 | return err; |
337 | } | |
338 | ||
cbd56e7d JK |
339 | void release_orphan_inode(struct f2fs_sb_info *sbi) |
340 | { | |
6451e041 | 341 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
5d56b671 | 342 | f2fs_bug_on(sbi->n_orphans == 0); |
cbd56e7d | 343 | sbi->n_orphans--; |
6451e041 | 344 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
cbd56e7d JK |
345 | } |
346 | ||
127e670a JK |
347 | void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
348 | { | |
2d7b822a | 349 | /* add new orphan entry into list which is sorted by inode number */ |
6451e041 | 350 | __add_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
351 | } |
352 | ||
353 | void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
354 | { | |
953e6cc6 | 355 | /* remove orphan entry from orphan list */ |
6451e041 | 356 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
357 | } |
358 | ||
359 | static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
360 | { | |
361 | struct inode *inode = f2fs_iget(sbi->sb, ino); | |
5d56b671 | 362 | f2fs_bug_on(IS_ERR(inode)); |
127e670a JK |
363 | clear_nlink(inode); |
364 | ||
365 | /* truncate all the data during iput */ | |
366 | iput(inode); | |
367 | } | |
368 | ||
8f99a946 | 369 | void recover_orphan_inodes(struct f2fs_sb_info *sbi) |
127e670a JK |
370 | { |
371 | block_t start_blk, orphan_blkaddr, i, j; | |
372 | ||
25ca923b | 373 | if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG)) |
8f99a946 | 374 | return; |
127e670a | 375 | |
aabe5136 | 376 | sbi->por_doing = true; |
1dbe4152 CL |
377 | |
378 | start_blk = __start_cp_addr(sbi) + 1 + | |
379 | le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); | |
127e670a JK |
380 | orphan_blkaddr = __start_sum_addr(sbi) - 1; |
381 | ||
662befda CY |
382 | ra_meta_pages(sbi, start_blk, orphan_blkaddr, META_CP); |
383 | ||
127e670a JK |
384 | for (i = 0; i < orphan_blkaddr; i++) { |
385 | struct page *page = get_meta_page(sbi, start_blk + i); | |
386 | struct f2fs_orphan_block *orphan_blk; | |
387 | ||
388 | orphan_blk = (struct f2fs_orphan_block *)page_address(page); | |
389 | for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { | |
390 | nid_t ino = le32_to_cpu(orphan_blk->ino[j]); | |
391 | recover_orphan_inode(sbi, ino); | |
392 | } | |
393 | f2fs_put_page(page, 1); | |
394 | } | |
395 | /* clear Orphan Flag */ | |
25ca923b | 396 | clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG); |
aabe5136 | 397 | sbi->por_doing = false; |
8f99a946 | 398 | return; |
127e670a JK |
399 | } |
400 | ||
401 | static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) | |
402 | { | |
502c6e0b | 403 | struct list_head *head; |
127e670a | 404 | struct f2fs_orphan_block *orphan_blk = NULL; |
127e670a | 405 | unsigned int nentries = 0; |
4531929e GZ |
406 | unsigned short index; |
407 | unsigned short orphan_blocks = (unsigned short)((sbi->n_orphans + | |
408 | (F2FS_ORPHANS_PER_BLOCK - 1)) / F2FS_ORPHANS_PER_BLOCK); | |
409 | struct page *page = NULL; | |
6451e041 | 410 | struct ino_entry *orphan = NULL; |
127e670a | 411 | |
4531929e | 412 | for (index = 0; index < orphan_blocks; index++) |
63f5384c | 413 | grab_meta_page(sbi, start_blk + index); |
127e670a | 414 | |
4531929e | 415 | index = 1; |
6451e041 JK |
416 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
417 | head = &sbi->ino_list[ORPHAN_INO]; | |
127e670a JK |
418 | |
419 | /* loop for each orphan inode entry and write them in Jornal block */ | |
502c6e0b GZ |
420 | list_for_each_entry(orphan, head, list) { |
421 | if (!page) { | |
63f5384c GZ |
422 | page = find_get_page(META_MAPPING(sbi), start_blk++); |
423 | f2fs_bug_on(!page); | |
502c6e0b GZ |
424 | orphan_blk = |
425 | (struct f2fs_orphan_block *)page_address(page); | |
426 | memset(orphan_blk, 0, sizeof(*orphan_blk)); | |
63f5384c | 427 | f2fs_put_page(page, 0); |
502c6e0b | 428 | } |
127e670a | 429 | |
36795567 | 430 | orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
127e670a | 431 | |
36795567 | 432 | if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
127e670a JK |
433 | /* |
434 | * an orphan block is full of 1020 entries, | |
435 | * then we need to flush current orphan blocks | |
436 | * and bring another one in memory | |
437 | */ | |
438 | orphan_blk->blk_addr = cpu_to_le16(index); | |
439 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
440 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
441 | set_page_dirty(page); | |
442 | f2fs_put_page(page, 1); | |
443 | index++; | |
127e670a JK |
444 | nentries = 0; |
445 | page = NULL; | |
446 | } | |
502c6e0b | 447 | } |
127e670a | 448 | |
502c6e0b GZ |
449 | if (page) { |
450 | orphan_blk->blk_addr = cpu_to_le16(index); | |
451 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
452 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
453 | set_page_dirty(page); | |
454 | f2fs_put_page(page, 1); | |
127e670a | 455 | } |
502c6e0b | 456 | |
6451e041 | 457 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
127e670a JK |
458 | } |
459 | ||
460 | static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, | |
461 | block_t cp_addr, unsigned long long *version) | |
462 | { | |
463 | struct page *cp_page_1, *cp_page_2 = NULL; | |
464 | unsigned long blk_size = sbi->blocksize; | |
465 | struct f2fs_checkpoint *cp_block; | |
466 | unsigned long long cur_version = 0, pre_version = 0; | |
127e670a | 467 | size_t crc_offset; |
7e586fa0 | 468 | __u32 crc = 0; |
127e670a JK |
469 | |
470 | /* Read the 1st cp block in this CP pack */ | |
471 | cp_page_1 = get_meta_page(sbi, cp_addr); | |
472 | ||
473 | /* get the version number */ | |
474 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1); | |
475 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
476 | if (crc_offset >= blk_size) | |
477 | goto invalid_cp1; | |
478 | ||
7e586fa0 | 479 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
480 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
481 | goto invalid_cp1; | |
482 | ||
d71b5564 | 483 | pre_version = cur_cp_version(cp_block); |
127e670a JK |
484 | |
485 | /* Read the 2nd cp block in this CP pack */ | |
25ca923b | 486 | cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1; |
127e670a JK |
487 | cp_page_2 = get_meta_page(sbi, cp_addr); |
488 | ||
489 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2); | |
490 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
491 | if (crc_offset >= blk_size) | |
492 | goto invalid_cp2; | |
493 | ||
7e586fa0 | 494 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
495 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
496 | goto invalid_cp2; | |
497 | ||
d71b5564 | 498 | cur_version = cur_cp_version(cp_block); |
127e670a JK |
499 | |
500 | if (cur_version == pre_version) { | |
501 | *version = cur_version; | |
502 | f2fs_put_page(cp_page_2, 1); | |
503 | return cp_page_1; | |
504 | } | |
505 | invalid_cp2: | |
506 | f2fs_put_page(cp_page_2, 1); | |
507 | invalid_cp1: | |
508 | f2fs_put_page(cp_page_1, 1); | |
509 | return NULL; | |
510 | } | |
511 | ||
512 | int get_valid_checkpoint(struct f2fs_sb_info *sbi) | |
513 | { | |
514 | struct f2fs_checkpoint *cp_block; | |
515 | struct f2fs_super_block *fsb = sbi->raw_super; | |
516 | struct page *cp1, *cp2, *cur_page; | |
517 | unsigned long blk_size = sbi->blocksize; | |
518 | unsigned long long cp1_version = 0, cp2_version = 0; | |
519 | unsigned long long cp_start_blk_no; | |
1dbe4152 CL |
520 | unsigned int cp_blks = 1 + le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
521 | block_t cp_blk_no; | |
522 | int i; | |
127e670a | 523 | |
1dbe4152 | 524 | sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL); |
127e670a JK |
525 | if (!sbi->ckpt) |
526 | return -ENOMEM; | |
527 | /* | |
528 | * Finding out valid cp block involves read both | |
529 | * sets( cp pack1 and cp pack 2) | |
530 | */ | |
531 | cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
532 | cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); | |
533 | ||
534 | /* The second checkpoint pack should start at the next segment */ | |
f9a4e6df JK |
535 | cp_start_blk_no += ((unsigned long long)1) << |
536 | le32_to_cpu(fsb->log_blocks_per_seg); | |
127e670a JK |
537 | cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
538 | ||
539 | if (cp1 && cp2) { | |
540 | if (ver_after(cp2_version, cp1_version)) | |
541 | cur_page = cp2; | |
542 | else | |
543 | cur_page = cp1; | |
544 | } else if (cp1) { | |
545 | cur_page = cp1; | |
546 | } else if (cp2) { | |
547 | cur_page = cp2; | |
548 | } else { | |
549 | goto fail_no_cp; | |
550 | } | |
551 | ||
552 | cp_block = (struct f2fs_checkpoint *)page_address(cur_page); | |
553 | memcpy(sbi->ckpt, cp_block, blk_size); | |
554 | ||
1dbe4152 CL |
555 | if (cp_blks <= 1) |
556 | goto done; | |
557 | ||
558 | cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
559 | if (cur_page == cp2) | |
560 | cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); | |
561 | ||
562 | for (i = 1; i < cp_blks; i++) { | |
563 | void *sit_bitmap_ptr; | |
564 | unsigned char *ckpt = (unsigned char *)sbi->ckpt; | |
565 | ||
566 | cur_page = get_meta_page(sbi, cp_blk_no + i); | |
567 | sit_bitmap_ptr = page_address(cur_page); | |
568 | memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); | |
569 | f2fs_put_page(cur_page, 1); | |
570 | } | |
571 | done: | |
127e670a JK |
572 | f2fs_put_page(cp1, 1); |
573 | f2fs_put_page(cp2, 1); | |
574 | return 0; | |
575 | ||
576 | fail_no_cp: | |
577 | kfree(sbi->ckpt); | |
578 | return -EINVAL; | |
579 | } | |
580 | ||
5deb8267 | 581 | static int __add_dirty_inode(struct inode *inode, struct dir_inode_entry *new) |
127e670a JK |
582 | { |
583 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
127e670a | 584 | |
ed57c27f JK |
585 | if (is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) |
586 | return -EEXIST; | |
2d7b822a | 587 | |
ed57c27f JK |
588 | set_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); |
589 | F2FS_I(inode)->dirty_dir = new; | |
590 | list_add_tail(&new->list, &sbi->dir_inode_list); | |
dcdfff65 | 591 | stat_inc_dirty_dir(sbi); |
5deb8267 JK |
592 | return 0; |
593 | } | |
594 | ||
595 | void set_dirty_dir_page(struct inode *inode, struct page *page) | |
596 | { | |
597 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
598 | struct dir_inode_entry *new; | |
cf0ee0f0 | 599 | int ret = 0; |
5deb8267 | 600 | |
127e670a JK |
601 | if (!S_ISDIR(inode->i_mode)) |
602 | return; | |
7bd59381 GZ |
603 | |
604 | new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); | |
127e670a JK |
605 | new->inode = inode; |
606 | INIT_LIST_HEAD(&new->list); | |
607 | ||
608 | spin_lock(&sbi->dir_inode_lock); | |
cf0ee0f0 | 609 | ret = __add_dirty_inode(inode, new); |
127e670a JK |
610 | inode_inc_dirty_dents(inode); |
611 | SetPagePrivate(page); | |
5deb8267 | 612 | spin_unlock(&sbi->dir_inode_lock); |
cf0ee0f0 CY |
613 | |
614 | if (ret) | |
615 | kmem_cache_free(inode_entry_slab, new); | |
5deb8267 JK |
616 | } |
617 | ||
618 | void add_dirty_dir_inode(struct inode *inode) | |
619 | { | |
620 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
7bd59381 GZ |
621 | struct dir_inode_entry *new = |
622 | f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); | |
cf0ee0f0 | 623 | int ret = 0; |
7bd59381 | 624 | |
5deb8267 JK |
625 | new->inode = inode; |
626 | INIT_LIST_HEAD(&new->list); | |
127e670a | 627 | |
5deb8267 | 628 | spin_lock(&sbi->dir_inode_lock); |
cf0ee0f0 | 629 | ret = __add_dirty_inode(inode, new); |
127e670a | 630 | spin_unlock(&sbi->dir_inode_lock); |
cf0ee0f0 CY |
631 | |
632 | if (ret) | |
633 | kmem_cache_free(inode_entry_slab, new); | |
127e670a JK |
634 | } |
635 | ||
636 | void remove_dirty_dir_inode(struct inode *inode) | |
637 | { | |
638 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
2d7b822a | 639 | struct dir_inode_entry *entry; |
127e670a JK |
640 | |
641 | if (!S_ISDIR(inode->i_mode)) | |
642 | return; | |
643 | ||
644 | spin_lock(&sbi->dir_inode_lock); | |
ed57c27f JK |
645 | if (get_dirty_dents(inode) || |
646 | !is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) { | |
3b10b1fd JK |
647 | spin_unlock(&sbi->dir_inode_lock); |
648 | return; | |
649 | } | |
127e670a | 650 | |
ed57c27f JK |
651 | entry = F2FS_I(inode)->dirty_dir; |
652 | list_del(&entry->list); | |
653 | F2FS_I(inode)->dirty_dir = NULL; | |
654 | clear_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); | |
655 | stat_dec_dirty_dir(sbi); | |
127e670a | 656 | spin_unlock(&sbi->dir_inode_lock); |
ed57c27f | 657 | kmem_cache_free(inode_entry_slab, entry); |
74d0b917 JK |
658 | |
659 | /* Only from the recovery routine */ | |
afc3eda2 JK |
660 | if (is_inode_flag_set(F2FS_I(inode), FI_DELAY_IPUT)) { |
661 | clear_inode_flag(F2FS_I(inode), FI_DELAY_IPUT); | |
74d0b917 | 662 | iput(inode); |
afc3eda2 | 663 | } |
74d0b917 JK |
664 | } |
665 | ||
127e670a JK |
666 | void sync_dirty_dir_inodes(struct f2fs_sb_info *sbi) |
667 | { | |
ce3b7d80 | 668 | struct list_head *head; |
127e670a JK |
669 | struct dir_inode_entry *entry; |
670 | struct inode *inode; | |
671 | retry: | |
672 | spin_lock(&sbi->dir_inode_lock); | |
ce3b7d80 GZ |
673 | |
674 | head = &sbi->dir_inode_list; | |
127e670a JK |
675 | if (list_empty(head)) { |
676 | spin_unlock(&sbi->dir_inode_lock); | |
677 | return; | |
678 | } | |
679 | entry = list_entry(head->next, struct dir_inode_entry, list); | |
680 | inode = igrab(entry->inode); | |
681 | spin_unlock(&sbi->dir_inode_lock); | |
682 | if (inode) { | |
87d6f890 | 683 | filemap_fdatawrite(inode->i_mapping); |
127e670a JK |
684 | iput(inode); |
685 | } else { | |
686 | /* | |
687 | * We should submit bio, since it exists several | |
688 | * wribacking dentry pages in the freeing inode. | |
689 | */ | |
458e6197 | 690 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
127e670a JK |
691 | } |
692 | goto retry; | |
693 | } | |
694 | ||
0a8165d7 | 695 | /* |
127e670a JK |
696 | * Freeze all the FS-operations for checkpoint. |
697 | */ | |
43727527 | 698 | static void block_operations(struct f2fs_sb_info *sbi) |
127e670a | 699 | { |
127e670a JK |
700 | struct writeback_control wbc = { |
701 | .sync_mode = WB_SYNC_ALL, | |
702 | .nr_to_write = LONG_MAX, | |
703 | .for_reclaim = 0, | |
704 | }; | |
c718379b JK |
705 | struct blk_plug plug; |
706 | ||
707 | blk_start_plug(&plug); | |
708 | ||
39936837 | 709 | retry_flush_dents: |
e479556b | 710 | f2fs_lock_all(sbi); |
127e670a | 711 | /* write all the dirty dentry pages */ |
127e670a | 712 | if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
e479556b | 713 | f2fs_unlock_all(sbi); |
39936837 JK |
714 | sync_dirty_dir_inodes(sbi); |
715 | goto retry_flush_dents; | |
127e670a JK |
716 | } |
717 | ||
127e670a JK |
718 | /* |
719 | * POR: we should ensure that there is no dirty node pages | |
720 | * until finishing nat/sit flush. | |
721 | */ | |
39936837 JK |
722 | retry_flush_nodes: |
723 | mutex_lock(&sbi->node_write); | |
127e670a JK |
724 | |
725 | if (get_pages(sbi, F2FS_DIRTY_NODES)) { | |
39936837 JK |
726 | mutex_unlock(&sbi->node_write); |
727 | sync_node_pages(sbi, 0, &wbc); | |
728 | goto retry_flush_nodes; | |
127e670a | 729 | } |
c718379b | 730 | blk_finish_plug(&plug); |
127e670a JK |
731 | } |
732 | ||
733 | static void unblock_operations(struct f2fs_sb_info *sbi) | |
734 | { | |
39936837 | 735 | mutex_unlock(&sbi->node_write); |
e479556b | 736 | f2fs_unlock_all(sbi); |
127e670a JK |
737 | } |
738 | ||
fb51b5ef CL |
739 | static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) |
740 | { | |
741 | DEFINE_WAIT(wait); | |
742 | ||
743 | for (;;) { | |
744 | prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); | |
745 | ||
746 | if (!get_pages(sbi, F2FS_WRITEBACK)) | |
747 | break; | |
748 | ||
749 | io_schedule(); | |
750 | } | |
751 | finish_wait(&sbi->cp_wait, &wait); | |
752 | } | |
753 | ||
127e670a JK |
754 | static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) |
755 | { | |
756 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
757 | nid_t last_nid = 0; | |
758 | block_t start_blk; | |
759 | struct page *cp_page; | |
760 | unsigned int data_sum_blocks, orphan_blocks; | |
7e586fa0 | 761 | __u32 crc32 = 0; |
127e670a | 762 | void *kaddr; |
127e670a | 763 | int i; |
1dbe4152 | 764 | int cp_payload_blks = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
127e670a | 765 | |
1e87a78d JK |
766 | /* |
767 | * This avoids to conduct wrong roll-forward operations and uses | |
768 | * metapages, so should be called prior to sync_meta_pages below. | |
769 | */ | |
770 | discard_next_dnode(sbi); | |
127e670a JK |
771 | |
772 | /* Flush all the NAT/SIT pages */ | |
773 | while (get_pages(sbi, F2FS_DIRTY_META)) | |
774 | sync_meta_pages(sbi, META, LONG_MAX); | |
775 | ||
776 | next_free_nid(sbi, &last_nid); | |
777 | ||
778 | /* | |
779 | * modify checkpoint | |
780 | * version number is already updated | |
781 | */ | |
782 | ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi)); | |
783 | ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); | |
784 | ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); | |
785 | for (i = 0; i < 3; i++) { | |
786 | ckpt->cur_node_segno[i] = | |
787 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); | |
788 | ckpt->cur_node_blkoff[i] = | |
789 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); | |
790 | ckpt->alloc_type[i + CURSEG_HOT_NODE] = | |
791 | curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); | |
792 | } | |
793 | for (i = 0; i < 3; i++) { | |
794 | ckpt->cur_data_segno[i] = | |
795 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); | |
796 | ckpt->cur_data_blkoff[i] = | |
797 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); | |
798 | ckpt->alloc_type[i + CURSEG_HOT_DATA] = | |
799 | curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); | |
800 | } | |
801 | ||
802 | ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); | |
803 | ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); | |
804 | ckpt->next_free_nid = cpu_to_le32(last_nid); | |
805 | ||
806 | /* 2 cp + n data seg summary + orphan inode blocks */ | |
807 | data_sum_blocks = npages_for_summary_flush(sbi); | |
808 | if (data_sum_blocks < 3) | |
25ca923b | 809 | set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 810 | else |
25ca923b | 811 | clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a JK |
812 | |
813 | orphan_blocks = (sbi->n_orphans + F2FS_ORPHANS_PER_BLOCK - 1) | |
814 | / F2FS_ORPHANS_PER_BLOCK; | |
1dbe4152 CL |
815 | ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
816 | orphan_blocks); | |
127e670a JK |
817 | |
818 | if (is_umount) { | |
25ca923b JK |
819 | set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
820 | ckpt->cp_pack_total_block_count = cpu_to_le32(2 + | |
1dbe4152 CL |
821 | cp_payload_blks + data_sum_blocks + |
822 | orphan_blocks + NR_CURSEG_NODE_TYPE); | |
127e670a | 823 | } else { |
25ca923b JK |
824 | clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
825 | ckpt->cp_pack_total_block_count = cpu_to_le32(2 + | |
1dbe4152 CL |
826 | cp_payload_blks + data_sum_blocks + |
827 | orphan_blocks); | |
127e670a JK |
828 | } |
829 | ||
830 | if (sbi->n_orphans) | |
25ca923b | 831 | set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 832 | else |
25ca923b | 833 | clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a JK |
834 | |
835 | /* update SIT/NAT bitmap */ | |
836 | get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); | |
837 | get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); | |
838 | ||
839 | crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset)); | |
7e586fa0 JK |
840 | *((__le32 *)((unsigned char *)ckpt + |
841 | le32_to_cpu(ckpt->checksum_offset))) | |
127e670a JK |
842 | = cpu_to_le32(crc32); |
843 | ||
844 | start_blk = __start_cp_addr(sbi); | |
845 | ||
846 | /* write out checkpoint buffer at block 0 */ | |
847 | cp_page = grab_meta_page(sbi, start_blk++); | |
848 | kaddr = page_address(cp_page); | |
849 | memcpy(kaddr, ckpt, (1 << sbi->log_blocksize)); | |
850 | set_page_dirty(cp_page); | |
851 | f2fs_put_page(cp_page, 1); | |
852 | ||
1dbe4152 CL |
853 | for (i = 1; i < 1 + cp_payload_blks; i++) { |
854 | cp_page = grab_meta_page(sbi, start_blk++); | |
855 | kaddr = page_address(cp_page); | |
856 | memcpy(kaddr, (char *)ckpt + i * F2FS_BLKSIZE, | |
857 | (1 << sbi->log_blocksize)); | |
858 | set_page_dirty(cp_page); | |
859 | f2fs_put_page(cp_page, 1); | |
860 | } | |
861 | ||
127e670a JK |
862 | if (sbi->n_orphans) { |
863 | write_orphan_inodes(sbi, start_blk); | |
864 | start_blk += orphan_blocks; | |
865 | } | |
866 | ||
867 | write_data_summaries(sbi, start_blk); | |
868 | start_blk += data_sum_blocks; | |
869 | if (is_umount) { | |
870 | write_node_summaries(sbi, start_blk); | |
871 | start_blk += NR_CURSEG_NODE_TYPE; | |
872 | } | |
873 | ||
874 | /* writeout checkpoint block */ | |
875 | cp_page = grab_meta_page(sbi, start_blk); | |
876 | kaddr = page_address(cp_page); | |
877 | memcpy(kaddr, ckpt, (1 << sbi->log_blocksize)); | |
878 | set_page_dirty(cp_page); | |
879 | f2fs_put_page(cp_page, 1); | |
880 | ||
881 | /* wait for previous submitted node/meta pages writeback */ | |
fb51b5ef | 882 | wait_on_all_pages_writeback(sbi); |
127e670a | 883 | |
4ef51a8f | 884 | filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX); |
9df27d98 | 885 | filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX); |
127e670a JK |
886 | |
887 | /* update user_block_counts */ | |
888 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
889 | sbi->alloc_valid_block_count = 0; | |
890 | ||
891 | /* Here, we only have one bio having CP pack */ | |
577e3495 | 892 | sync_meta_pages(sbi, META_FLUSH, LONG_MAX); |
127e670a | 893 | |
6bacf52f | 894 | if (unlikely(!is_set_ckpt_flags(ckpt, CP_ERROR_FLAG))) { |
577e3495 JK |
895 | clear_prefree_segments(sbi); |
896 | F2FS_RESET_SB_DIRT(sbi); | |
897 | } | |
127e670a JK |
898 | } |
899 | ||
0a8165d7 | 900 | /* |
127e670a JK |
901 | * We guarantee that this checkpoint procedure should not fail. |
902 | */ | |
43727527 | 903 | void write_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) |
127e670a JK |
904 | { |
905 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
906 | unsigned long long ckpt_ver; | |
907 | ||
2af4bd6c NJ |
908 | trace_f2fs_write_checkpoint(sbi->sb, is_umount, "start block_ops"); |
909 | ||
43727527 JK |
910 | mutex_lock(&sbi->cp_mutex); |
911 | block_operations(sbi); | |
127e670a | 912 | |
2af4bd6c NJ |
913 | trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish block_ops"); |
914 | ||
458e6197 JK |
915 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
916 | f2fs_submit_merged_bio(sbi, NODE, WRITE); | |
917 | f2fs_submit_merged_bio(sbi, META, WRITE); | |
127e670a JK |
918 | |
919 | /* | |
920 | * update checkpoint pack index | |
921 | * Increase the version number so that | |
922 | * SIT entries and seg summaries are written at correct place | |
923 | */ | |
d71b5564 | 924 | ckpt_ver = cur_cp_version(ckpt); |
127e670a JK |
925 | ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
926 | ||
927 | /* write cached NAT/SIT entries to NAT/SIT area */ | |
928 | flush_nat_entries(sbi); | |
929 | flush_sit_entries(sbi); | |
930 | ||
127e670a JK |
931 | /* unlock all the fs_lock[] in do_checkpoint() */ |
932 | do_checkpoint(sbi, is_umount); | |
933 | ||
934 | unblock_operations(sbi); | |
935 | mutex_unlock(&sbi->cp_mutex); | |
2af4bd6c | 936 | |
942e0be6 | 937 | stat_inc_cp_count(sbi->stat_info); |
2af4bd6c | 938 | trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish checkpoint"); |
127e670a JK |
939 | } |
940 | ||
6451e041 | 941 | void init_ino_entry_info(struct f2fs_sb_info *sbi) |
127e670a | 942 | { |
6451e041 JK |
943 | int i; |
944 | ||
945 | for (i = 0; i < MAX_INO_ENTRY; i++) { | |
946 | spin_lock_init(&sbi->ino_lock[i]); | |
947 | INIT_LIST_HEAD(&sbi->ino_list[i]); | |
948 | } | |
949 | ||
0d47c1ad GZ |
950 | /* |
951 | * considering 512 blocks in a segment 8 blocks are needed for cp | |
952 | * and log segment summaries. Remaining blocks are used to keep | |
953 | * orphan entries with the limitation one reserved segment | |
954 | * for cp pack we can have max 1020*504 orphan entries | |
955 | */ | |
6451e041 | 956 | sbi->n_orphans = 0; |
0d47c1ad GZ |
957 | sbi->max_orphans = (sbi->blocks_per_seg - 2 - NR_CURSEG_TYPE) |
958 | * F2FS_ORPHANS_PER_BLOCK; | |
127e670a JK |
959 | } |
960 | ||
6e6093a8 | 961 | int __init create_checkpoint_caches(void) |
127e670a | 962 | { |
6451e041 JK |
963 | ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
964 | sizeof(struct ino_entry)); | |
965 | if (!ino_entry_slab) | |
127e670a JK |
966 | return -ENOMEM; |
967 | inode_entry_slab = f2fs_kmem_cache_create("f2fs_dirty_dir_entry", | |
e8512d2e | 968 | sizeof(struct dir_inode_entry)); |
6bacf52f | 969 | if (!inode_entry_slab) { |
6451e041 | 970 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
971 | return -ENOMEM; |
972 | } | |
973 | return 0; | |
974 | } | |
975 | ||
976 | void destroy_checkpoint_caches(void) | |
977 | { | |
6451e041 | 978 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
979 | kmem_cache_destroy(inode_entry_slab); |
980 | } |