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; | |
1e968fdf | 163 | if (unlikely(f2fs_cp_error(sbi))) |
cf779cab | 164 | goto redirty_out; |
127e670a | 165 | |
3cb5ad15 | 166 | f2fs_wait_on_page_writeback(page, META); |
577e3495 JK |
167 | write_meta_page(sbi, page); |
168 | dec_page_count(sbi, F2FS_DIRTY_META); | |
169 | unlock_page(page); | |
170 | return 0; | |
cfb271d4 CY |
171 | |
172 | redirty_out: | |
76f60268 | 173 | redirty_page_for_writepage(wbc, page); |
cfb271d4 | 174 | return AOP_WRITEPAGE_ACTIVATE; |
127e670a JK |
175 | } |
176 | ||
177 | static int f2fs_write_meta_pages(struct address_space *mapping, | |
178 | struct writeback_control *wbc) | |
179 | { | |
180 | struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); | |
50c8cdb3 | 181 | long diff, written; |
127e670a | 182 | |
e5748434 CY |
183 | trace_f2fs_writepages(mapping->host, wbc, META); |
184 | ||
5459aa97 | 185 | /* collect a number of dirty meta pages and write together */ |
50c8cdb3 JK |
186 | if (wbc->for_kupdate || |
187 | get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) | |
d3baf95d | 188 | goto skip_write; |
127e670a JK |
189 | |
190 | /* if mounting is failed, skip writing node pages */ | |
191 | mutex_lock(&sbi->cp_mutex); | |
50c8cdb3 JK |
192 | diff = nr_pages_to_write(sbi, META, wbc); |
193 | written = sync_meta_pages(sbi, META, wbc->nr_to_write); | |
127e670a | 194 | mutex_unlock(&sbi->cp_mutex); |
50c8cdb3 | 195 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); |
127e670a | 196 | return 0; |
d3baf95d JK |
197 | |
198 | skip_write: | |
199 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); | |
200 | return 0; | |
127e670a JK |
201 | } |
202 | ||
203 | long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, | |
204 | long nr_to_write) | |
205 | { | |
9df27d98 | 206 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a JK |
207 | pgoff_t index = 0, end = LONG_MAX; |
208 | struct pagevec pvec; | |
209 | long nwritten = 0; | |
210 | struct writeback_control wbc = { | |
211 | .for_reclaim = 0, | |
212 | }; | |
213 | ||
214 | pagevec_init(&pvec, 0); | |
215 | ||
216 | while (index <= end) { | |
217 | int i, nr_pages; | |
218 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, | |
219 | PAGECACHE_TAG_DIRTY, | |
220 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
cfb271d4 | 221 | if (unlikely(nr_pages == 0)) |
127e670a JK |
222 | break; |
223 | ||
224 | for (i = 0; i < nr_pages; i++) { | |
225 | struct page *page = pvec.pages[i]; | |
203681f6 | 226 | |
127e670a | 227 | lock_page(page); |
203681f6 JK |
228 | |
229 | if (unlikely(page->mapping != mapping)) { | |
230 | continue_unlock: | |
231 | unlock_page(page); | |
232 | continue; | |
233 | } | |
234 | if (!PageDirty(page)) { | |
235 | /* someone wrote it for us */ | |
236 | goto continue_unlock; | |
237 | } | |
238 | ||
239 | if (!clear_page_dirty_for_io(page)) | |
240 | goto continue_unlock; | |
241 | ||
577e3495 JK |
242 | if (f2fs_write_meta_page(page, &wbc)) { |
243 | unlock_page(page); | |
244 | break; | |
245 | } | |
cfb271d4 CY |
246 | nwritten++; |
247 | if (unlikely(nwritten >= nr_to_write)) | |
127e670a JK |
248 | break; |
249 | } | |
250 | pagevec_release(&pvec); | |
251 | cond_resched(); | |
252 | } | |
253 | ||
254 | if (nwritten) | |
458e6197 | 255 | f2fs_submit_merged_bio(sbi, type, WRITE); |
127e670a JK |
256 | |
257 | return nwritten; | |
258 | } | |
259 | ||
260 | static int f2fs_set_meta_page_dirty(struct page *page) | |
261 | { | |
262 | struct address_space *mapping = page->mapping; | |
263 | struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); | |
264 | ||
26c6b887 JK |
265 | trace_f2fs_set_page_dirty(page, META); |
266 | ||
127e670a JK |
267 | SetPageUptodate(page); |
268 | if (!PageDirty(page)) { | |
269 | __set_page_dirty_nobuffers(page); | |
270 | inc_page_count(sbi, F2FS_DIRTY_META); | |
127e670a JK |
271 | return 1; |
272 | } | |
273 | return 0; | |
274 | } | |
275 | ||
276 | const struct address_space_operations f2fs_meta_aops = { | |
277 | .writepage = f2fs_write_meta_page, | |
278 | .writepages = f2fs_write_meta_pages, | |
279 | .set_page_dirty = f2fs_set_meta_page_dirty, | |
280 | }; | |
281 | ||
6451e041 | 282 | static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 283 | { |
39efac41 JK |
284 | struct ino_entry *e; |
285 | retry: | |
6451e041 | 286 | spin_lock(&sbi->ino_lock[type]); |
39efac41 JK |
287 | |
288 | e = radix_tree_lookup(&sbi->ino_root[type], ino); | |
289 | if (!e) { | |
290 | e = kmem_cache_alloc(ino_entry_slab, GFP_ATOMIC); | |
291 | if (!e) { | |
6451e041 | 292 | spin_unlock(&sbi->ino_lock[type]); |
39efac41 | 293 | goto retry; |
953e6cc6 | 294 | } |
39efac41 JK |
295 | if (radix_tree_insert(&sbi->ino_root[type], ino, e)) { |
296 | spin_unlock(&sbi->ino_lock[type]); | |
297 | kmem_cache_free(ino_entry_slab, e); | |
298 | goto retry; | |
299 | } | |
300 | memset(e, 0, sizeof(struct ino_entry)); | |
301 | e->ino = ino; | |
953e6cc6 | 302 | |
39efac41 JK |
303 | list_add_tail(&e->list, &sbi->ino_list[type]); |
304 | } | |
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 | 312 | spin_lock(&sbi->ino_lock[type]); |
39efac41 JK |
313 | e = radix_tree_lookup(&sbi->ino_root[type], ino); |
314 | if (e) { | |
315 | list_del(&e->list); | |
316 | radix_tree_delete(&sbi->ino_root[type], ino); | |
317 | if (type == ORPHAN_INO) | |
953e6cc6 | 318 | sbi->n_orphans--; |
39efac41 JK |
319 | spin_unlock(&sbi->ino_lock[type]); |
320 | kmem_cache_free(ino_entry_slab, e); | |
321 | return; | |
953e6cc6 | 322 | } |
6451e041 | 323 | spin_unlock(&sbi->ino_lock[type]); |
953e6cc6 JK |
324 | } |
325 | ||
fff04f90 JK |
326 | void add_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) |
327 | { | |
328 | /* add new dirty ino entry into list */ | |
329 | __add_ino_entry(sbi, ino, type); | |
330 | } | |
331 | ||
332 | void remove_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) | |
333 | { | |
334 | /* remove dirty ino entry from list */ | |
335 | __remove_ino_entry(sbi, ino, type); | |
336 | } | |
337 | ||
338 | /* mode should be APPEND_INO or UPDATE_INO */ | |
339 | bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) | |
340 | { | |
341 | struct ino_entry *e; | |
342 | spin_lock(&sbi->ino_lock[mode]); | |
343 | e = radix_tree_lookup(&sbi->ino_root[mode], ino); | |
344 | spin_unlock(&sbi->ino_lock[mode]); | |
345 | return e ? true : false; | |
346 | } | |
347 | ||
6f12ac25 | 348 | void release_dirty_inode(struct f2fs_sb_info *sbi) |
fff04f90 JK |
349 | { |
350 | struct ino_entry *e, *tmp; | |
351 | int i; | |
352 | ||
353 | for (i = APPEND_INO; i <= UPDATE_INO; i++) { | |
354 | spin_lock(&sbi->ino_lock[i]); | |
355 | list_for_each_entry_safe(e, tmp, &sbi->ino_list[i], list) { | |
356 | list_del(&e->list); | |
357 | radix_tree_delete(&sbi->ino_root[i], e->ino); | |
358 | kmem_cache_free(ino_entry_slab, e); | |
359 | } | |
360 | spin_unlock(&sbi->ino_lock[i]); | |
361 | } | |
362 | } | |
363 | ||
cbd56e7d | 364 | int acquire_orphan_inode(struct f2fs_sb_info *sbi) |
127e670a | 365 | { |
127e670a JK |
366 | int err = 0; |
367 | ||
6451e041 | 368 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
0d47c1ad | 369 | if (unlikely(sbi->n_orphans >= sbi->max_orphans)) |
127e670a | 370 | err = -ENOSPC; |
cbd56e7d JK |
371 | else |
372 | sbi->n_orphans++; | |
6451e041 | 373 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
0d47c1ad | 374 | |
127e670a JK |
375 | return err; |
376 | } | |
377 | ||
cbd56e7d JK |
378 | void release_orphan_inode(struct f2fs_sb_info *sbi) |
379 | { | |
6451e041 | 380 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
5d56b671 | 381 | f2fs_bug_on(sbi->n_orphans == 0); |
cbd56e7d | 382 | sbi->n_orphans--; |
6451e041 | 383 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
cbd56e7d JK |
384 | } |
385 | ||
127e670a JK |
386 | void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
387 | { | |
39efac41 | 388 | /* add new orphan ino entry into list */ |
6451e041 | 389 | __add_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
390 | } |
391 | ||
392 | void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
393 | { | |
953e6cc6 | 394 | /* remove orphan entry from orphan list */ |
6451e041 | 395 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
396 | } |
397 | ||
398 | static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
399 | { | |
400 | struct inode *inode = f2fs_iget(sbi->sb, ino); | |
5d56b671 | 401 | f2fs_bug_on(IS_ERR(inode)); |
127e670a JK |
402 | clear_nlink(inode); |
403 | ||
404 | /* truncate all the data during iput */ | |
405 | iput(inode); | |
406 | } | |
407 | ||
8f99a946 | 408 | void recover_orphan_inodes(struct f2fs_sb_info *sbi) |
127e670a JK |
409 | { |
410 | block_t start_blk, orphan_blkaddr, i, j; | |
411 | ||
25ca923b | 412 | if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG)) |
8f99a946 | 413 | return; |
127e670a | 414 | |
aabe5136 | 415 | sbi->por_doing = true; |
1dbe4152 CL |
416 | |
417 | start_blk = __start_cp_addr(sbi) + 1 + | |
418 | le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); | |
127e670a JK |
419 | orphan_blkaddr = __start_sum_addr(sbi) - 1; |
420 | ||
662befda CY |
421 | ra_meta_pages(sbi, start_blk, orphan_blkaddr, META_CP); |
422 | ||
127e670a JK |
423 | for (i = 0; i < orphan_blkaddr; i++) { |
424 | struct page *page = get_meta_page(sbi, start_blk + i); | |
425 | struct f2fs_orphan_block *orphan_blk; | |
426 | ||
427 | orphan_blk = (struct f2fs_orphan_block *)page_address(page); | |
428 | for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { | |
429 | nid_t ino = le32_to_cpu(orphan_blk->ino[j]); | |
430 | recover_orphan_inode(sbi, ino); | |
431 | } | |
432 | f2fs_put_page(page, 1); | |
433 | } | |
434 | /* clear Orphan Flag */ | |
25ca923b | 435 | clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG); |
aabe5136 | 436 | sbi->por_doing = false; |
8f99a946 | 437 | return; |
127e670a JK |
438 | } |
439 | ||
440 | static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) | |
441 | { | |
502c6e0b | 442 | struct list_head *head; |
127e670a | 443 | struct f2fs_orphan_block *orphan_blk = NULL; |
127e670a | 444 | unsigned int nentries = 0; |
4531929e GZ |
445 | unsigned short index; |
446 | unsigned short orphan_blocks = (unsigned short)((sbi->n_orphans + | |
447 | (F2FS_ORPHANS_PER_BLOCK - 1)) / F2FS_ORPHANS_PER_BLOCK); | |
448 | struct page *page = NULL; | |
6451e041 | 449 | struct ino_entry *orphan = NULL; |
127e670a | 450 | |
4531929e | 451 | for (index = 0; index < orphan_blocks; index++) |
63f5384c | 452 | grab_meta_page(sbi, start_blk + index); |
127e670a | 453 | |
4531929e | 454 | index = 1; |
6451e041 JK |
455 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
456 | head = &sbi->ino_list[ORPHAN_INO]; | |
127e670a JK |
457 | |
458 | /* loop for each orphan inode entry and write them in Jornal block */ | |
502c6e0b GZ |
459 | list_for_each_entry(orphan, head, list) { |
460 | if (!page) { | |
63f5384c GZ |
461 | page = find_get_page(META_MAPPING(sbi), start_blk++); |
462 | f2fs_bug_on(!page); | |
502c6e0b GZ |
463 | orphan_blk = |
464 | (struct f2fs_orphan_block *)page_address(page); | |
465 | memset(orphan_blk, 0, sizeof(*orphan_blk)); | |
63f5384c | 466 | f2fs_put_page(page, 0); |
502c6e0b | 467 | } |
127e670a | 468 | |
36795567 | 469 | orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
127e670a | 470 | |
36795567 | 471 | if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
127e670a JK |
472 | /* |
473 | * an orphan block is full of 1020 entries, | |
474 | * then we need to flush current orphan blocks | |
475 | * and bring another one in memory | |
476 | */ | |
477 | orphan_blk->blk_addr = cpu_to_le16(index); | |
478 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
479 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
480 | set_page_dirty(page); | |
481 | f2fs_put_page(page, 1); | |
482 | index++; | |
127e670a JK |
483 | nentries = 0; |
484 | page = NULL; | |
485 | } | |
502c6e0b | 486 | } |
127e670a | 487 | |
502c6e0b GZ |
488 | if (page) { |
489 | orphan_blk->blk_addr = cpu_to_le16(index); | |
490 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
491 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
492 | set_page_dirty(page); | |
493 | f2fs_put_page(page, 1); | |
127e670a | 494 | } |
502c6e0b | 495 | |
6451e041 | 496 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
127e670a JK |
497 | } |
498 | ||
499 | static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, | |
500 | block_t cp_addr, unsigned long long *version) | |
501 | { | |
502 | struct page *cp_page_1, *cp_page_2 = NULL; | |
503 | unsigned long blk_size = sbi->blocksize; | |
504 | struct f2fs_checkpoint *cp_block; | |
505 | unsigned long long cur_version = 0, pre_version = 0; | |
127e670a | 506 | size_t crc_offset; |
7e586fa0 | 507 | __u32 crc = 0; |
127e670a JK |
508 | |
509 | /* Read the 1st cp block in this CP pack */ | |
510 | cp_page_1 = get_meta_page(sbi, cp_addr); | |
511 | ||
512 | /* get the version number */ | |
513 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1); | |
514 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
515 | if (crc_offset >= blk_size) | |
516 | goto invalid_cp1; | |
517 | ||
7e586fa0 | 518 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
519 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
520 | goto invalid_cp1; | |
521 | ||
d71b5564 | 522 | pre_version = cur_cp_version(cp_block); |
127e670a JK |
523 | |
524 | /* Read the 2nd cp block in this CP pack */ | |
25ca923b | 525 | cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1; |
127e670a JK |
526 | cp_page_2 = get_meta_page(sbi, cp_addr); |
527 | ||
528 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2); | |
529 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
530 | if (crc_offset >= blk_size) | |
531 | goto invalid_cp2; | |
532 | ||
7e586fa0 | 533 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
534 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
535 | goto invalid_cp2; | |
536 | ||
d71b5564 | 537 | cur_version = cur_cp_version(cp_block); |
127e670a JK |
538 | |
539 | if (cur_version == pre_version) { | |
540 | *version = cur_version; | |
541 | f2fs_put_page(cp_page_2, 1); | |
542 | return cp_page_1; | |
543 | } | |
544 | invalid_cp2: | |
545 | f2fs_put_page(cp_page_2, 1); | |
546 | invalid_cp1: | |
547 | f2fs_put_page(cp_page_1, 1); | |
548 | return NULL; | |
549 | } | |
550 | ||
551 | int get_valid_checkpoint(struct f2fs_sb_info *sbi) | |
552 | { | |
553 | struct f2fs_checkpoint *cp_block; | |
554 | struct f2fs_super_block *fsb = sbi->raw_super; | |
555 | struct page *cp1, *cp2, *cur_page; | |
556 | unsigned long blk_size = sbi->blocksize; | |
557 | unsigned long long cp1_version = 0, cp2_version = 0; | |
558 | unsigned long long cp_start_blk_no; | |
1dbe4152 CL |
559 | unsigned int cp_blks = 1 + le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
560 | block_t cp_blk_no; | |
561 | int i; | |
127e670a | 562 | |
1dbe4152 | 563 | sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL); |
127e670a JK |
564 | if (!sbi->ckpt) |
565 | return -ENOMEM; | |
566 | /* | |
567 | * Finding out valid cp block involves read both | |
568 | * sets( cp pack1 and cp pack 2) | |
569 | */ | |
570 | cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
571 | cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); | |
572 | ||
573 | /* The second checkpoint pack should start at the next segment */ | |
f9a4e6df JK |
574 | cp_start_blk_no += ((unsigned long long)1) << |
575 | le32_to_cpu(fsb->log_blocks_per_seg); | |
127e670a JK |
576 | cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
577 | ||
578 | if (cp1 && cp2) { | |
579 | if (ver_after(cp2_version, cp1_version)) | |
580 | cur_page = cp2; | |
581 | else | |
582 | cur_page = cp1; | |
583 | } else if (cp1) { | |
584 | cur_page = cp1; | |
585 | } else if (cp2) { | |
586 | cur_page = cp2; | |
587 | } else { | |
588 | goto fail_no_cp; | |
589 | } | |
590 | ||
591 | cp_block = (struct f2fs_checkpoint *)page_address(cur_page); | |
592 | memcpy(sbi->ckpt, cp_block, blk_size); | |
593 | ||
1dbe4152 CL |
594 | if (cp_blks <= 1) |
595 | goto done; | |
596 | ||
597 | cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
598 | if (cur_page == cp2) | |
599 | cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); | |
600 | ||
601 | for (i = 1; i < cp_blks; i++) { | |
602 | void *sit_bitmap_ptr; | |
603 | unsigned char *ckpt = (unsigned char *)sbi->ckpt; | |
604 | ||
605 | cur_page = get_meta_page(sbi, cp_blk_no + i); | |
606 | sit_bitmap_ptr = page_address(cur_page); | |
607 | memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); | |
608 | f2fs_put_page(cur_page, 1); | |
609 | } | |
610 | done: | |
127e670a JK |
611 | f2fs_put_page(cp1, 1); |
612 | f2fs_put_page(cp2, 1); | |
613 | return 0; | |
614 | ||
615 | fail_no_cp: | |
616 | kfree(sbi->ckpt); | |
617 | return -EINVAL; | |
618 | } | |
619 | ||
5deb8267 | 620 | static int __add_dirty_inode(struct inode *inode, struct dir_inode_entry *new) |
127e670a JK |
621 | { |
622 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
127e670a | 623 | |
ed57c27f JK |
624 | if (is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) |
625 | return -EEXIST; | |
2d7b822a | 626 | |
ed57c27f JK |
627 | set_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); |
628 | F2FS_I(inode)->dirty_dir = new; | |
629 | list_add_tail(&new->list, &sbi->dir_inode_list); | |
dcdfff65 | 630 | stat_inc_dirty_dir(sbi); |
5deb8267 JK |
631 | return 0; |
632 | } | |
633 | ||
634 | void set_dirty_dir_page(struct inode *inode, struct page *page) | |
635 | { | |
636 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
637 | struct dir_inode_entry *new; | |
cf0ee0f0 | 638 | int ret = 0; |
5deb8267 | 639 | |
127e670a JK |
640 | if (!S_ISDIR(inode->i_mode)) |
641 | return; | |
7bd59381 GZ |
642 | |
643 | new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); | |
127e670a JK |
644 | new->inode = inode; |
645 | INIT_LIST_HEAD(&new->list); | |
646 | ||
647 | spin_lock(&sbi->dir_inode_lock); | |
cf0ee0f0 | 648 | ret = __add_dirty_inode(inode, new); |
127e670a JK |
649 | inode_inc_dirty_dents(inode); |
650 | SetPagePrivate(page); | |
5deb8267 | 651 | spin_unlock(&sbi->dir_inode_lock); |
cf0ee0f0 CY |
652 | |
653 | if (ret) | |
654 | kmem_cache_free(inode_entry_slab, new); | |
5deb8267 JK |
655 | } |
656 | ||
657 | void add_dirty_dir_inode(struct inode *inode) | |
658 | { | |
659 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
7bd59381 GZ |
660 | struct dir_inode_entry *new = |
661 | f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); | |
cf0ee0f0 | 662 | int ret = 0; |
7bd59381 | 663 | |
5deb8267 JK |
664 | new->inode = inode; |
665 | INIT_LIST_HEAD(&new->list); | |
127e670a | 666 | |
5deb8267 | 667 | spin_lock(&sbi->dir_inode_lock); |
cf0ee0f0 | 668 | ret = __add_dirty_inode(inode, new); |
127e670a | 669 | spin_unlock(&sbi->dir_inode_lock); |
cf0ee0f0 CY |
670 | |
671 | if (ret) | |
672 | kmem_cache_free(inode_entry_slab, new); | |
127e670a JK |
673 | } |
674 | ||
675 | void remove_dirty_dir_inode(struct inode *inode) | |
676 | { | |
677 | struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); | |
2d7b822a | 678 | struct dir_inode_entry *entry; |
127e670a JK |
679 | |
680 | if (!S_ISDIR(inode->i_mode)) | |
681 | return; | |
682 | ||
683 | spin_lock(&sbi->dir_inode_lock); | |
ed57c27f JK |
684 | if (get_dirty_dents(inode) || |
685 | !is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) { | |
3b10b1fd JK |
686 | spin_unlock(&sbi->dir_inode_lock); |
687 | return; | |
688 | } | |
127e670a | 689 | |
ed57c27f JK |
690 | entry = F2FS_I(inode)->dirty_dir; |
691 | list_del(&entry->list); | |
692 | F2FS_I(inode)->dirty_dir = NULL; | |
693 | clear_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); | |
694 | stat_dec_dirty_dir(sbi); | |
127e670a | 695 | spin_unlock(&sbi->dir_inode_lock); |
ed57c27f | 696 | kmem_cache_free(inode_entry_slab, entry); |
74d0b917 JK |
697 | |
698 | /* Only from the recovery routine */ | |
afc3eda2 JK |
699 | if (is_inode_flag_set(F2FS_I(inode), FI_DELAY_IPUT)) { |
700 | clear_inode_flag(F2FS_I(inode), FI_DELAY_IPUT); | |
74d0b917 | 701 | iput(inode); |
afc3eda2 | 702 | } |
74d0b917 JK |
703 | } |
704 | ||
127e670a JK |
705 | void sync_dirty_dir_inodes(struct f2fs_sb_info *sbi) |
706 | { | |
ce3b7d80 | 707 | struct list_head *head; |
127e670a JK |
708 | struct dir_inode_entry *entry; |
709 | struct inode *inode; | |
710 | retry: | |
711 | spin_lock(&sbi->dir_inode_lock); | |
ce3b7d80 GZ |
712 | |
713 | head = &sbi->dir_inode_list; | |
127e670a JK |
714 | if (list_empty(head)) { |
715 | spin_unlock(&sbi->dir_inode_lock); | |
716 | return; | |
717 | } | |
718 | entry = list_entry(head->next, struct dir_inode_entry, list); | |
719 | inode = igrab(entry->inode); | |
720 | spin_unlock(&sbi->dir_inode_lock); | |
721 | if (inode) { | |
87d6f890 | 722 | filemap_fdatawrite(inode->i_mapping); |
127e670a JK |
723 | iput(inode); |
724 | } else { | |
725 | /* | |
726 | * We should submit bio, since it exists several | |
727 | * wribacking dentry pages in the freeing inode. | |
728 | */ | |
458e6197 | 729 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
127e670a JK |
730 | } |
731 | goto retry; | |
732 | } | |
733 | ||
0a8165d7 | 734 | /* |
127e670a JK |
735 | * Freeze all the FS-operations for checkpoint. |
736 | */ | |
cf779cab | 737 | static int block_operations(struct f2fs_sb_info *sbi) |
127e670a | 738 | { |
127e670a JK |
739 | struct writeback_control wbc = { |
740 | .sync_mode = WB_SYNC_ALL, | |
741 | .nr_to_write = LONG_MAX, | |
742 | .for_reclaim = 0, | |
743 | }; | |
c718379b | 744 | struct blk_plug plug; |
cf779cab | 745 | int err = 0; |
c718379b JK |
746 | |
747 | blk_start_plug(&plug); | |
748 | ||
39936837 | 749 | retry_flush_dents: |
e479556b | 750 | f2fs_lock_all(sbi); |
127e670a | 751 | /* write all the dirty dentry pages */ |
127e670a | 752 | if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
e479556b | 753 | f2fs_unlock_all(sbi); |
39936837 | 754 | sync_dirty_dir_inodes(sbi); |
cf779cab JK |
755 | if (unlikely(f2fs_cp_error(sbi))) { |
756 | err = -EIO; | |
757 | goto out; | |
758 | } | |
39936837 | 759 | goto retry_flush_dents; |
127e670a JK |
760 | } |
761 | ||
127e670a | 762 | /* |
e1c42045 | 763 | * POR: we should ensure that there are no dirty node pages |
127e670a JK |
764 | * until finishing nat/sit flush. |
765 | */ | |
39936837 | 766 | retry_flush_nodes: |
b3582c68 | 767 | down_write(&sbi->node_write); |
127e670a JK |
768 | |
769 | if (get_pages(sbi, F2FS_DIRTY_NODES)) { | |
b3582c68 | 770 | up_write(&sbi->node_write); |
39936837 | 771 | sync_node_pages(sbi, 0, &wbc); |
cf779cab JK |
772 | if (unlikely(f2fs_cp_error(sbi))) { |
773 | f2fs_unlock_all(sbi); | |
774 | err = -EIO; | |
775 | goto out; | |
776 | } | |
39936837 | 777 | goto retry_flush_nodes; |
127e670a | 778 | } |
cf779cab | 779 | out: |
c718379b | 780 | blk_finish_plug(&plug); |
cf779cab | 781 | return err; |
127e670a JK |
782 | } |
783 | ||
784 | static void unblock_operations(struct f2fs_sb_info *sbi) | |
785 | { | |
b3582c68 | 786 | up_write(&sbi->node_write); |
e479556b | 787 | f2fs_unlock_all(sbi); |
127e670a JK |
788 | } |
789 | ||
fb51b5ef CL |
790 | static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) |
791 | { | |
792 | DEFINE_WAIT(wait); | |
793 | ||
794 | for (;;) { | |
795 | prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); | |
796 | ||
797 | if (!get_pages(sbi, F2FS_WRITEBACK)) | |
798 | break; | |
799 | ||
800 | io_schedule(); | |
801 | } | |
802 | finish_wait(&sbi->cp_wait, &wait); | |
803 | } | |
804 | ||
127e670a JK |
805 | static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) |
806 | { | |
807 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
cf2271e7 | 808 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
127e670a JK |
809 | nid_t last_nid = 0; |
810 | block_t start_blk; | |
811 | struct page *cp_page; | |
812 | unsigned int data_sum_blocks, orphan_blocks; | |
7e586fa0 | 813 | __u32 crc32 = 0; |
127e670a | 814 | void *kaddr; |
127e670a | 815 | int i; |
1dbe4152 | 816 | int cp_payload_blks = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
127e670a | 817 | |
1e87a78d JK |
818 | /* |
819 | * This avoids to conduct wrong roll-forward operations and uses | |
820 | * metapages, so should be called prior to sync_meta_pages below. | |
821 | */ | |
cf2271e7 | 822 | discard_next_dnode(sbi, NEXT_FREE_BLKADDR(sbi, curseg)); |
127e670a JK |
823 | |
824 | /* Flush all the NAT/SIT pages */ | |
cf779cab | 825 | while (get_pages(sbi, F2FS_DIRTY_META)) { |
127e670a | 826 | sync_meta_pages(sbi, META, LONG_MAX); |
cf779cab JK |
827 | if (unlikely(f2fs_cp_error(sbi))) |
828 | return; | |
829 | } | |
127e670a JK |
830 | |
831 | next_free_nid(sbi, &last_nid); | |
832 | ||
833 | /* | |
834 | * modify checkpoint | |
835 | * version number is already updated | |
836 | */ | |
837 | ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi)); | |
838 | ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); | |
839 | ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); | |
840 | for (i = 0; i < 3; i++) { | |
841 | ckpt->cur_node_segno[i] = | |
842 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); | |
843 | ckpt->cur_node_blkoff[i] = | |
844 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); | |
845 | ckpt->alloc_type[i + CURSEG_HOT_NODE] = | |
846 | curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); | |
847 | } | |
848 | for (i = 0; i < 3; i++) { | |
849 | ckpt->cur_data_segno[i] = | |
850 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); | |
851 | ckpt->cur_data_blkoff[i] = | |
852 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); | |
853 | ckpt->alloc_type[i + CURSEG_HOT_DATA] = | |
854 | curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); | |
855 | } | |
856 | ||
857 | ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); | |
858 | ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); | |
859 | ckpt->next_free_nid = cpu_to_le32(last_nid); | |
860 | ||
861 | /* 2 cp + n data seg summary + orphan inode blocks */ | |
862 | data_sum_blocks = npages_for_summary_flush(sbi); | |
863 | if (data_sum_blocks < 3) | |
25ca923b | 864 | set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 865 | else |
25ca923b | 866 | clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a JK |
867 | |
868 | orphan_blocks = (sbi->n_orphans + F2FS_ORPHANS_PER_BLOCK - 1) | |
869 | / F2FS_ORPHANS_PER_BLOCK; | |
1dbe4152 CL |
870 | ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
871 | orphan_blocks); | |
127e670a JK |
872 | |
873 | if (is_umount) { | |
25ca923b JK |
874 | set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
875 | ckpt->cp_pack_total_block_count = cpu_to_le32(2 + | |
1dbe4152 CL |
876 | cp_payload_blks + data_sum_blocks + |
877 | orphan_blocks + NR_CURSEG_NODE_TYPE); | |
127e670a | 878 | } else { |
25ca923b JK |
879 | clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
880 | ckpt->cp_pack_total_block_count = cpu_to_le32(2 + | |
1dbe4152 CL |
881 | cp_payload_blks + data_sum_blocks + |
882 | orphan_blocks); | |
127e670a JK |
883 | } |
884 | ||
885 | if (sbi->n_orphans) | |
25ca923b | 886 | set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 887 | else |
25ca923b | 888 | clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a JK |
889 | |
890 | /* update SIT/NAT bitmap */ | |
891 | get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); | |
892 | get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); | |
893 | ||
894 | crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset)); | |
7e586fa0 JK |
895 | *((__le32 *)((unsigned char *)ckpt + |
896 | le32_to_cpu(ckpt->checksum_offset))) | |
127e670a JK |
897 | = cpu_to_le32(crc32); |
898 | ||
899 | start_blk = __start_cp_addr(sbi); | |
900 | ||
901 | /* write out checkpoint buffer at block 0 */ | |
902 | cp_page = grab_meta_page(sbi, start_blk++); | |
903 | kaddr = page_address(cp_page); | |
904 | memcpy(kaddr, ckpt, (1 << sbi->log_blocksize)); | |
905 | set_page_dirty(cp_page); | |
906 | f2fs_put_page(cp_page, 1); | |
907 | ||
1dbe4152 CL |
908 | for (i = 1; i < 1 + cp_payload_blks; i++) { |
909 | cp_page = grab_meta_page(sbi, start_blk++); | |
910 | kaddr = page_address(cp_page); | |
911 | memcpy(kaddr, (char *)ckpt + i * F2FS_BLKSIZE, | |
912 | (1 << sbi->log_blocksize)); | |
913 | set_page_dirty(cp_page); | |
914 | f2fs_put_page(cp_page, 1); | |
915 | } | |
916 | ||
127e670a JK |
917 | if (sbi->n_orphans) { |
918 | write_orphan_inodes(sbi, start_blk); | |
919 | start_blk += orphan_blocks; | |
920 | } | |
921 | ||
922 | write_data_summaries(sbi, start_blk); | |
923 | start_blk += data_sum_blocks; | |
924 | if (is_umount) { | |
925 | write_node_summaries(sbi, start_blk); | |
926 | start_blk += NR_CURSEG_NODE_TYPE; | |
927 | } | |
928 | ||
929 | /* writeout checkpoint block */ | |
930 | cp_page = grab_meta_page(sbi, start_blk); | |
931 | kaddr = page_address(cp_page); | |
932 | memcpy(kaddr, ckpt, (1 << sbi->log_blocksize)); | |
933 | set_page_dirty(cp_page); | |
934 | f2fs_put_page(cp_page, 1); | |
935 | ||
936 | /* wait for previous submitted node/meta pages writeback */ | |
fb51b5ef | 937 | wait_on_all_pages_writeback(sbi); |
127e670a | 938 | |
cf779cab JK |
939 | if (unlikely(f2fs_cp_error(sbi))) |
940 | return; | |
941 | ||
4ef51a8f | 942 | filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX); |
9df27d98 | 943 | filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX); |
127e670a JK |
944 | |
945 | /* update user_block_counts */ | |
946 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
947 | sbi->alloc_valid_block_count = 0; | |
948 | ||
949 | /* Here, we only have one bio having CP pack */ | |
577e3495 | 950 | sync_meta_pages(sbi, META_FLUSH, LONG_MAX); |
127e670a | 951 | |
cf779cab JK |
952 | release_dirty_inode(sbi); |
953 | ||
954 | if (unlikely(f2fs_cp_error(sbi))) | |
955 | return; | |
956 | ||
957 | clear_prefree_segments(sbi); | |
958 | F2FS_RESET_SB_DIRT(sbi); | |
127e670a JK |
959 | } |
960 | ||
0a8165d7 | 961 | /* |
e1c42045 | 962 | * We guarantee that this checkpoint procedure will not fail. |
127e670a | 963 | */ |
43727527 | 964 | void write_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) |
127e670a JK |
965 | { |
966 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
967 | unsigned long long ckpt_ver; | |
968 | ||
2af4bd6c NJ |
969 | trace_f2fs_write_checkpoint(sbi->sb, is_umount, "start block_ops"); |
970 | ||
43727527 | 971 | mutex_lock(&sbi->cp_mutex); |
8501017e JK |
972 | |
973 | if (!sbi->s_dirty) | |
974 | goto out; | |
cf779cab JK |
975 | if (unlikely(f2fs_cp_error(sbi))) |
976 | goto out; | |
977 | if (block_operations(sbi)) | |
978 | goto out; | |
127e670a | 979 | |
2af4bd6c NJ |
980 | trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish block_ops"); |
981 | ||
458e6197 JK |
982 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
983 | f2fs_submit_merged_bio(sbi, NODE, WRITE); | |
984 | f2fs_submit_merged_bio(sbi, META, WRITE); | |
127e670a JK |
985 | |
986 | /* | |
987 | * update checkpoint pack index | |
988 | * Increase the version number so that | |
989 | * SIT entries and seg summaries are written at correct place | |
990 | */ | |
d71b5564 | 991 | ckpt_ver = cur_cp_version(ckpt); |
127e670a JK |
992 | ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
993 | ||
994 | /* write cached NAT/SIT entries to NAT/SIT area */ | |
995 | flush_nat_entries(sbi); | |
996 | flush_sit_entries(sbi); | |
997 | ||
127e670a JK |
998 | /* unlock all the fs_lock[] in do_checkpoint() */ |
999 | do_checkpoint(sbi, is_umount); | |
1000 | ||
1001 | unblock_operations(sbi); | |
942e0be6 | 1002 | stat_inc_cp_count(sbi->stat_info); |
8501017e JK |
1003 | out: |
1004 | mutex_unlock(&sbi->cp_mutex); | |
2af4bd6c | 1005 | trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish checkpoint"); |
127e670a JK |
1006 | } |
1007 | ||
6451e041 | 1008 | void init_ino_entry_info(struct f2fs_sb_info *sbi) |
127e670a | 1009 | { |
6451e041 JK |
1010 | int i; |
1011 | ||
1012 | for (i = 0; i < MAX_INO_ENTRY; i++) { | |
39efac41 | 1013 | INIT_RADIX_TREE(&sbi->ino_root[i], GFP_ATOMIC); |
6451e041 JK |
1014 | spin_lock_init(&sbi->ino_lock[i]); |
1015 | INIT_LIST_HEAD(&sbi->ino_list[i]); | |
1016 | } | |
1017 | ||
0d47c1ad GZ |
1018 | /* |
1019 | * considering 512 blocks in a segment 8 blocks are needed for cp | |
1020 | * and log segment summaries. Remaining blocks are used to keep | |
1021 | * orphan entries with the limitation one reserved segment | |
1022 | * for cp pack we can have max 1020*504 orphan entries | |
1023 | */ | |
6451e041 | 1024 | sbi->n_orphans = 0; |
0d47c1ad GZ |
1025 | sbi->max_orphans = (sbi->blocks_per_seg - 2 - NR_CURSEG_TYPE) |
1026 | * F2FS_ORPHANS_PER_BLOCK; | |
127e670a JK |
1027 | } |
1028 | ||
6e6093a8 | 1029 | int __init create_checkpoint_caches(void) |
127e670a | 1030 | { |
6451e041 JK |
1031 | ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
1032 | sizeof(struct ino_entry)); | |
1033 | if (!ino_entry_slab) | |
127e670a JK |
1034 | return -ENOMEM; |
1035 | inode_entry_slab = f2fs_kmem_cache_create("f2fs_dirty_dir_entry", | |
e8512d2e | 1036 | sizeof(struct dir_inode_entry)); |
6bacf52f | 1037 | if (!inode_entry_slab) { |
6451e041 | 1038 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1039 | return -ENOMEM; |
1040 | } | |
1041 | return 0; | |
1042 | } | |
1043 | ||
1044 | void destroy_checkpoint_caches(void) | |
1045 | { | |
6451e041 | 1046 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1047 | kmem_cache_destroy(inode_entry_slab); |
1048 | } |