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Commit | Line | Data |
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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 | { | |
4081363f | 154 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
127e670a | 155 | |
ecda0de3 CY |
156 | trace_f2fs_writepage(page, META); |
157 | ||
203681f6 | 158 | if (unlikely(sbi->por_doing)) |
cfb271d4 | 159 | goto redirty_out; |
cfb271d4 CY |
160 | if (wbc->for_reclaim) |
161 | goto redirty_out; | |
1e968fdf | 162 | if (unlikely(f2fs_cp_error(sbi))) |
cf779cab | 163 | goto redirty_out; |
127e670a | 164 | |
3cb5ad15 | 165 | f2fs_wait_on_page_writeback(page, META); |
577e3495 JK |
166 | write_meta_page(sbi, page); |
167 | dec_page_count(sbi, F2FS_DIRTY_META); | |
168 | unlock_page(page); | |
169 | return 0; | |
cfb271d4 CY |
170 | |
171 | redirty_out: | |
76f60268 | 172 | redirty_page_for_writepage(wbc, page); |
cfb271d4 | 173 | return AOP_WRITEPAGE_ACTIVATE; |
127e670a JK |
174 | } |
175 | ||
176 | static int f2fs_write_meta_pages(struct address_space *mapping, | |
177 | struct writeback_control *wbc) | |
178 | { | |
4081363f | 179 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
50c8cdb3 | 180 | long diff, written; |
127e670a | 181 | |
e5748434 CY |
182 | trace_f2fs_writepages(mapping->host, wbc, META); |
183 | ||
5459aa97 | 184 | /* collect a number of dirty meta pages and write together */ |
50c8cdb3 JK |
185 | if (wbc->for_kupdate || |
186 | get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) | |
d3baf95d | 187 | goto skip_write; |
127e670a JK |
188 | |
189 | /* if mounting is failed, skip writing node pages */ | |
190 | mutex_lock(&sbi->cp_mutex); | |
50c8cdb3 JK |
191 | diff = nr_pages_to_write(sbi, META, wbc); |
192 | written = sync_meta_pages(sbi, META, wbc->nr_to_write); | |
127e670a | 193 | mutex_unlock(&sbi->cp_mutex); |
50c8cdb3 | 194 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); |
127e670a | 195 | return 0; |
d3baf95d JK |
196 | |
197 | skip_write: | |
198 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); | |
199 | return 0; | |
127e670a JK |
200 | } |
201 | ||
202 | long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, | |
203 | long nr_to_write) | |
204 | { | |
9df27d98 | 205 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a JK |
206 | pgoff_t index = 0, end = LONG_MAX; |
207 | struct pagevec pvec; | |
208 | long nwritten = 0; | |
209 | struct writeback_control wbc = { | |
210 | .for_reclaim = 0, | |
211 | }; | |
212 | ||
213 | pagevec_init(&pvec, 0); | |
214 | ||
215 | while (index <= end) { | |
216 | int i, nr_pages; | |
217 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, | |
218 | PAGECACHE_TAG_DIRTY, | |
219 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
cfb271d4 | 220 | if (unlikely(nr_pages == 0)) |
127e670a JK |
221 | break; |
222 | ||
223 | for (i = 0; i < nr_pages; i++) { | |
224 | struct page *page = pvec.pages[i]; | |
203681f6 | 225 | |
127e670a | 226 | lock_page(page); |
203681f6 JK |
227 | |
228 | if (unlikely(page->mapping != mapping)) { | |
229 | continue_unlock: | |
230 | unlock_page(page); | |
231 | continue; | |
232 | } | |
233 | if (!PageDirty(page)) { | |
234 | /* someone wrote it for us */ | |
235 | goto continue_unlock; | |
236 | } | |
237 | ||
238 | if (!clear_page_dirty_for_io(page)) | |
239 | goto continue_unlock; | |
240 | ||
577e3495 JK |
241 | if (f2fs_write_meta_page(page, &wbc)) { |
242 | unlock_page(page); | |
243 | break; | |
244 | } | |
cfb271d4 CY |
245 | nwritten++; |
246 | if (unlikely(nwritten >= nr_to_write)) | |
127e670a JK |
247 | break; |
248 | } | |
249 | pagevec_release(&pvec); | |
250 | cond_resched(); | |
251 | } | |
252 | ||
253 | if (nwritten) | |
458e6197 | 254 | f2fs_submit_merged_bio(sbi, type, WRITE); |
127e670a JK |
255 | |
256 | return nwritten; | |
257 | } | |
258 | ||
259 | static int f2fs_set_meta_page_dirty(struct page *page) | |
260 | { | |
26c6b887 JK |
261 | trace_f2fs_set_page_dirty(page, META); |
262 | ||
127e670a JK |
263 | SetPageUptodate(page); |
264 | if (!PageDirty(page)) { | |
265 | __set_page_dirty_nobuffers(page); | |
4081363f | 266 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); |
127e670a JK |
267 | return 1; |
268 | } | |
269 | return 0; | |
270 | } | |
271 | ||
272 | const struct address_space_operations f2fs_meta_aops = { | |
273 | .writepage = f2fs_write_meta_page, | |
274 | .writepages = f2fs_write_meta_pages, | |
275 | .set_page_dirty = f2fs_set_meta_page_dirty, | |
276 | }; | |
277 | ||
6451e041 | 278 | static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 279 | { |
39efac41 JK |
280 | struct ino_entry *e; |
281 | retry: | |
6451e041 | 282 | spin_lock(&sbi->ino_lock[type]); |
39efac41 JK |
283 | |
284 | e = radix_tree_lookup(&sbi->ino_root[type], ino); | |
285 | if (!e) { | |
286 | e = kmem_cache_alloc(ino_entry_slab, GFP_ATOMIC); | |
287 | if (!e) { | |
6451e041 | 288 | spin_unlock(&sbi->ino_lock[type]); |
39efac41 | 289 | goto retry; |
953e6cc6 | 290 | } |
39efac41 JK |
291 | if (radix_tree_insert(&sbi->ino_root[type], ino, e)) { |
292 | spin_unlock(&sbi->ino_lock[type]); | |
293 | kmem_cache_free(ino_entry_slab, e); | |
294 | goto retry; | |
295 | } | |
296 | memset(e, 0, sizeof(struct ino_entry)); | |
297 | e->ino = ino; | |
953e6cc6 | 298 | |
39efac41 JK |
299 | list_add_tail(&e->list, &sbi->ino_list[type]); |
300 | } | |
6451e041 | 301 | spin_unlock(&sbi->ino_lock[type]); |
953e6cc6 JK |
302 | } |
303 | ||
6451e041 | 304 | static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 305 | { |
6451e041 | 306 | struct ino_entry *e; |
953e6cc6 | 307 | |
6451e041 | 308 | spin_lock(&sbi->ino_lock[type]); |
39efac41 JK |
309 | e = radix_tree_lookup(&sbi->ino_root[type], ino); |
310 | if (e) { | |
311 | list_del(&e->list); | |
312 | radix_tree_delete(&sbi->ino_root[type], ino); | |
313 | if (type == ORPHAN_INO) | |
953e6cc6 | 314 | sbi->n_orphans--; |
39efac41 JK |
315 | spin_unlock(&sbi->ino_lock[type]); |
316 | kmem_cache_free(ino_entry_slab, e); | |
317 | return; | |
953e6cc6 | 318 | } |
6451e041 | 319 | spin_unlock(&sbi->ino_lock[type]); |
953e6cc6 JK |
320 | } |
321 | ||
fff04f90 JK |
322 | void add_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) |
323 | { | |
324 | /* add new dirty ino entry into list */ | |
325 | __add_ino_entry(sbi, ino, type); | |
326 | } | |
327 | ||
328 | void remove_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) | |
329 | { | |
330 | /* remove dirty ino entry from list */ | |
331 | __remove_ino_entry(sbi, ino, type); | |
332 | } | |
333 | ||
334 | /* mode should be APPEND_INO or UPDATE_INO */ | |
335 | bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) | |
336 | { | |
337 | struct ino_entry *e; | |
338 | spin_lock(&sbi->ino_lock[mode]); | |
339 | e = radix_tree_lookup(&sbi->ino_root[mode], ino); | |
340 | spin_unlock(&sbi->ino_lock[mode]); | |
341 | return e ? true : false; | |
342 | } | |
343 | ||
6f12ac25 | 344 | void release_dirty_inode(struct f2fs_sb_info *sbi) |
fff04f90 JK |
345 | { |
346 | struct ino_entry *e, *tmp; | |
347 | int i; | |
348 | ||
349 | for (i = APPEND_INO; i <= UPDATE_INO; i++) { | |
350 | spin_lock(&sbi->ino_lock[i]); | |
351 | list_for_each_entry_safe(e, tmp, &sbi->ino_list[i], list) { | |
352 | list_del(&e->list); | |
353 | radix_tree_delete(&sbi->ino_root[i], e->ino); | |
354 | kmem_cache_free(ino_entry_slab, e); | |
355 | } | |
356 | spin_unlock(&sbi->ino_lock[i]); | |
357 | } | |
358 | } | |
359 | ||
cbd56e7d | 360 | int acquire_orphan_inode(struct f2fs_sb_info *sbi) |
127e670a | 361 | { |
127e670a JK |
362 | int err = 0; |
363 | ||
6451e041 | 364 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
0d47c1ad | 365 | if (unlikely(sbi->n_orphans >= sbi->max_orphans)) |
127e670a | 366 | err = -ENOSPC; |
cbd56e7d JK |
367 | else |
368 | sbi->n_orphans++; | |
6451e041 | 369 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
0d47c1ad | 370 | |
127e670a JK |
371 | return err; |
372 | } | |
373 | ||
cbd56e7d JK |
374 | void release_orphan_inode(struct f2fs_sb_info *sbi) |
375 | { | |
6451e041 | 376 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
9850cf4a | 377 | f2fs_bug_on(sbi, sbi->n_orphans == 0); |
cbd56e7d | 378 | sbi->n_orphans--; |
6451e041 | 379 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
cbd56e7d JK |
380 | } |
381 | ||
127e670a JK |
382 | void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
383 | { | |
39efac41 | 384 | /* add new orphan ino entry into list */ |
6451e041 | 385 | __add_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
386 | } |
387 | ||
388 | void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
389 | { | |
953e6cc6 | 390 | /* remove orphan entry from orphan list */ |
6451e041 | 391 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
392 | } |
393 | ||
394 | static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
395 | { | |
396 | struct inode *inode = f2fs_iget(sbi->sb, ino); | |
9850cf4a | 397 | f2fs_bug_on(sbi, IS_ERR(inode)); |
127e670a JK |
398 | clear_nlink(inode); |
399 | ||
400 | /* truncate all the data during iput */ | |
401 | iput(inode); | |
402 | } | |
403 | ||
8f99a946 | 404 | void recover_orphan_inodes(struct f2fs_sb_info *sbi) |
127e670a JK |
405 | { |
406 | block_t start_blk, orphan_blkaddr, i, j; | |
407 | ||
25ca923b | 408 | if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG)) |
8f99a946 | 409 | return; |
127e670a | 410 | |
aabe5136 | 411 | sbi->por_doing = true; |
1dbe4152 CL |
412 | |
413 | start_blk = __start_cp_addr(sbi) + 1 + | |
414 | le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); | |
127e670a JK |
415 | orphan_blkaddr = __start_sum_addr(sbi) - 1; |
416 | ||
662befda CY |
417 | ra_meta_pages(sbi, start_blk, orphan_blkaddr, META_CP); |
418 | ||
127e670a JK |
419 | for (i = 0; i < orphan_blkaddr; i++) { |
420 | struct page *page = get_meta_page(sbi, start_blk + i); | |
421 | struct f2fs_orphan_block *orphan_blk; | |
422 | ||
423 | orphan_blk = (struct f2fs_orphan_block *)page_address(page); | |
424 | for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { | |
425 | nid_t ino = le32_to_cpu(orphan_blk->ino[j]); | |
426 | recover_orphan_inode(sbi, ino); | |
427 | } | |
428 | f2fs_put_page(page, 1); | |
429 | } | |
430 | /* clear Orphan Flag */ | |
25ca923b | 431 | clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG); |
aabe5136 | 432 | sbi->por_doing = false; |
8f99a946 | 433 | return; |
127e670a JK |
434 | } |
435 | ||
436 | static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) | |
437 | { | |
502c6e0b | 438 | struct list_head *head; |
127e670a | 439 | struct f2fs_orphan_block *orphan_blk = NULL; |
127e670a | 440 | unsigned int nentries = 0; |
4531929e | 441 | unsigned short index; |
b5b82205 CY |
442 | unsigned short orphan_blocks = |
443 | (unsigned short)GET_ORPHAN_BLOCKS(sbi->n_orphans); | |
4531929e | 444 | struct page *page = NULL; |
6451e041 | 445 | struct ino_entry *orphan = NULL; |
127e670a | 446 | |
4531929e | 447 | for (index = 0; index < orphan_blocks; index++) |
63f5384c | 448 | grab_meta_page(sbi, start_blk + index); |
127e670a | 449 | |
4531929e | 450 | index = 1; |
6451e041 JK |
451 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
452 | head = &sbi->ino_list[ORPHAN_INO]; | |
127e670a JK |
453 | |
454 | /* loop for each orphan inode entry and write them in Jornal block */ | |
502c6e0b GZ |
455 | list_for_each_entry(orphan, head, list) { |
456 | if (!page) { | |
63f5384c | 457 | page = find_get_page(META_MAPPING(sbi), start_blk++); |
9850cf4a | 458 | f2fs_bug_on(sbi, !page); |
502c6e0b GZ |
459 | orphan_blk = |
460 | (struct f2fs_orphan_block *)page_address(page); | |
461 | memset(orphan_blk, 0, sizeof(*orphan_blk)); | |
63f5384c | 462 | f2fs_put_page(page, 0); |
502c6e0b | 463 | } |
127e670a | 464 | |
36795567 | 465 | orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
127e670a | 466 | |
36795567 | 467 | if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
127e670a JK |
468 | /* |
469 | * an orphan block is full of 1020 entries, | |
470 | * then we need to flush current orphan blocks | |
471 | * and bring another one in memory | |
472 | */ | |
473 | orphan_blk->blk_addr = cpu_to_le16(index); | |
474 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
475 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
476 | set_page_dirty(page); | |
477 | f2fs_put_page(page, 1); | |
478 | index++; | |
127e670a JK |
479 | nentries = 0; |
480 | page = NULL; | |
481 | } | |
502c6e0b | 482 | } |
127e670a | 483 | |
502c6e0b GZ |
484 | if (page) { |
485 | orphan_blk->blk_addr = cpu_to_le16(index); | |
486 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
487 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
488 | set_page_dirty(page); | |
489 | f2fs_put_page(page, 1); | |
127e670a | 490 | } |
502c6e0b | 491 | |
6451e041 | 492 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
127e670a JK |
493 | } |
494 | ||
495 | static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, | |
496 | block_t cp_addr, unsigned long long *version) | |
497 | { | |
498 | struct page *cp_page_1, *cp_page_2 = NULL; | |
499 | unsigned long blk_size = sbi->blocksize; | |
500 | struct f2fs_checkpoint *cp_block; | |
501 | unsigned long long cur_version = 0, pre_version = 0; | |
127e670a | 502 | size_t crc_offset; |
7e586fa0 | 503 | __u32 crc = 0; |
127e670a JK |
504 | |
505 | /* Read the 1st cp block in this CP pack */ | |
506 | cp_page_1 = get_meta_page(sbi, cp_addr); | |
507 | ||
508 | /* get the version number */ | |
509 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1); | |
510 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
511 | if (crc_offset >= blk_size) | |
512 | goto invalid_cp1; | |
513 | ||
7e586fa0 | 514 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
515 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
516 | goto invalid_cp1; | |
517 | ||
d71b5564 | 518 | pre_version = cur_cp_version(cp_block); |
127e670a JK |
519 | |
520 | /* Read the 2nd cp block in this CP pack */ | |
25ca923b | 521 | cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1; |
127e670a JK |
522 | cp_page_2 = get_meta_page(sbi, cp_addr); |
523 | ||
524 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2); | |
525 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
526 | if (crc_offset >= blk_size) | |
527 | goto invalid_cp2; | |
528 | ||
7e586fa0 | 529 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
530 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
531 | goto invalid_cp2; | |
532 | ||
d71b5564 | 533 | cur_version = cur_cp_version(cp_block); |
127e670a JK |
534 | |
535 | if (cur_version == pre_version) { | |
536 | *version = cur_version; | |
537 | f2fs_put_page(cp_page_2, 1); | |
538 | return cp_page_1; | |
539 | } | |
540 | invalid_cp2: | |
541 | f2fs_put_page(cp_page_2, 1); | |
542 | invalid_cp1: | |
543 | f2fs_put_page(cp_page_1, 1); | |
544 | return NULL; | |
545 | } | |
546 | ||
547 | int get_valid_checkpoint(struct f2fs_sb_info *sbi) | |
548 | { | |
549 | struct f2fs_checkpoint *cp_block; | |
550 | struct f2fs_super_block *fsb = sbi->raw_super; | |
551 | struct page *cp1, *cp2, *cur_page; | |
552 | unsigned long blk_size = sbi->blocksize; | |
553 | unsigned long long cp1_version = 0, cp2_version = 0; | |
554 | unsigned long long cp_start_blk_no; | |
1dbe4152 CL |
555 | unsigned int cp_blks = 1 + le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
556 | block_t cp_blk_no; | |
557 | int i; | |
127e670a | 558 | |
1dbe4152 | 559 | sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL); |
127e670a JK |
560 | if (!sbi->ckpt) |
561 | return -ENOMEM; | |
562 | /* | |
563 | * Finding out valid cp block involves read both | |
564 | * sets( cp pack1 and cp pack 2) | |
565 | */ | |
566 | cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
567 | cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); | |
568 | ||
569 | /* The second checkpoint pack should start at the next segment */ | |
f9a4e6df JK |
570 | cp_start_blk_no += ((unsigned long long)1) << |
571 | le32_to_cpu(fsb->log_blocks_per_seg); | |
127e670a JK |
572 | cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
573 | ||
574 | if (cp1 && cp2) { | |
575 | if (ver_after(cp2_version, cp1_version)) | |
576 | cur_page = cp2; | |
577 | else | |
578 | cur_page = cp1; | |
579 | } else if (cp1) { | |
580 | cur_page = cp1; | |
581 | } else if (cp2) { | |
582 | cur_page = cp2; | |
583 | } else { | |
584 | goto fail_no_cp; | |
585 | } | |
586 | ||
587 | cp_block = (struct f2fs_checkpoint *)page_address(cur_page); | |
588 | memcpy(sbi->ckpt, cp_block, blk_size); | |
589 | ||
1dbe4152 CL |
590 | if (cp_blks <= 1) |
591 | goto done; | |
592 | ||
593 | cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
594 | if (cur_page == cp2) | |
595 | cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); | |
596 | ||
597 | for (i = 1; i < cp_blks; i++) { | |
598 | void *sit_bitmap_ptr; | |
599 | unsigned char *ckpt = (unsigned char *)sbi->ckpt; | |
600 | ||
601 | cur_page = get_meta_page(sbi, cp_blk_no + i); | |
602 | sit_bitmap_ptr = page_address(cur_page); | |
603 | memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); | |
604 | f2fs_put_page(cur_page, 1); | |
605 | } | |
606 | done: | |
127e670a JK |
607 | f2fs_put_page(cp1, 1); |
608 | f2fs_put_page(cp2, 1); | |
609 | return 0; | |
610 | ||
611 | fail_no_cp: | |
612 | kfree(sbi->ckpt); | |
613 | return -EINVAL; | |
614 | } | |
615 | ||
5deb8267 | 616 | static int __add_dirty_inode(struct inode *inode, struct dir_inode_entry *new) |
127e670a | 617 | { |
4081363f | 618 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
127e670a | 619 | |
ed57c27f JK |
620 | if (is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) |
621 | return -EEXIST; | |
2d7b822a | 622 | |
ed57c27f JK |
623 | set_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); |
624 | F2FS_I(inode)->dirty_dir = new; | |
625 | list_add_tail(&new->list, &sbi->dir_inode_list); | |
dcdfff65 | 626 | stat_inc_dirty_dir(sbi); |
5deb8267 JK |
627 | return 0; |
628 | } | |
629 | ||
630 | void set_dirty_dir_page(struct inode *inode, struct page *page) | |
631 | { | |
4081363f | 632 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
5deb8267 | 633 | struct dir_inode_entry *new; |
cf0ee0f0 | 634 | int ret = 0; |
5deb8267 | 635 | |
127e670a JK |
636 | if (!S_ISDIR(inode->i_mode)) |
637 | return; | |
7bd59381 GZ |
638 | |
639 | new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); | |
127e670a JK |
640 | new->inode = inode; |
641 | INIT_LIST_HEAD(&new->list); | |
642 | ||
643 | spin_lock(&sbi->dir_inode_lock); | |
cf0ee0f0 | 644 | ret = __add_dirty_inode(inode, new); |
127e670a JK |
645 | inode_inc_dirty_dents(inode); |
646 | SetPagePrivate(page); | |
5deb8267 | 647 | spin_unlock(&sbi->dir_inode_lock); |
cf0ee0f0 CY |
648 | |
649 | if (ret) | |
650 | kmem_cache_free(inode_entry_slab, new); | |
5deb8267 JK |
651 | } |
652 | ||
653 | void add_dirty_dir_inode(struct inode *inode) | |
654 | { | |
4081363f | 655 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
7bd59381 GZ |
656 | struct dir_inode_entry *new = |
657 | f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); | |
cf0ee0f0 | 658 | int ret = 0; |
7bd59381 | 659 | |
5deb8267 JK |
660 | new->inode = inode; |
661 | INIT_LIST_HEAD(&new->list); | |
127e670a | 662 | |
5deb8267 | 663 | spin_lock(&sbi->dir_inode_lock); |
cf0ee0f0 | 664 | ret = __add_dirty_inode(inode, new); |
127e670a | 665 | spin_unlock(&sbi->dir_inode_lock); |
cf0ee0f0 CY |
666 | |
667 | if (ret) | |
668 | kmem_cache_free(inode_entry_slab, new); | |
127e670a JK |
669 | } |
670 | ||
671 | void remove_dirty_dir_inode(struct inode *inode) | |
672 | { | |
4081363f | 673 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2d7b822a | 674 | struct dir_inode_entry *entry; |
127e670a JK |
675 | |
676 | if (!S_ISDIR(inode->i_mode)) | |
677 | return; | |
678 | ||
679 | spin_lock(&sbi->dir_inode_lock); | |
ed57c27f JK |
680 | if (get_dirty_dents(inode) || |
681 | !is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) { | |
3b10b1fd JK |
682 | spin_unlock(&sbi->dir_inode_lock); |
683 | return; | |
684 | } | |
127e670a | 685 | |
ed57c27f JK |
686 | entry = F2FS_I(inode)->dirty_dir; |
687 | list_del(&entry->list); | |
688 | F2FS_I(inode)->dirty_dir = NULL; | |
689 | clear_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); | |
690 | stat_dec_dirty_dir(sbi); | |
127e670a | 691 | spin_unlock(&sbi->dir_inode_lock); |
ed57c27f | 692 | kmem_cache_free(inode_entry_slab, entry); |
74d0b917 JK |
693 | |
694 | /* Only from the recovery routine */ | |
afc3eda2 JK |
695 | if (is_inode_flag_set(F2FS_I(inode), FI_DELAY_IPUT)) { |
696 | clear_inode_flag(F2FS_I(inode), FI_DELAY_IPUT); | |
74d0b917 | 697 | iput(inode); |
afc3eda2 | 698 | } |
74d0b917 JK |
699 | } |
700 | ||
127e670a JK |
701 | void sync_dirty_dir_inodes(struct f2fs_sb_info *sbi) |
702 | { | |
ce3b7d80 | 703 | struct list_head *head; |
127e670a JK |
704 | struct dir_inode_entry *entry; |
705 | struct inode *inode; | |
706 | retry: | |
707 | spin_lock(&sbi->dir_inode_lock); | |
ce3b7d80 GZ |
708 | |
709 | head = &sbi->dir_inode_list; | |
127e670a JK |
710 | if (list_empty(head)) { |
711 | spin_unlock(&sbi->dir_inode_lock); | |
712 | return; | |
713 | } | |
714 | entry = list_entry(head->next, struct dir_inode_entry, list); | |
715 | inode = igrab(entry->inode); | |
716 | spin_unlock(&sbi->dir_inode_lock); | |
717 | if (inode) { | |
87d6f890 | 718 | filemap_fdatawrite(inode->i_mapping); |
127e670a JK |
719 | iput(inode); |
720 | } else { | |
721 | /* | |
722 | * We should submit bio, since it exists several | |
723 | * wribacking dentry pages in the freeing inode. | |
724 | */ | |
458e6197 | 725 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
127e670a JK |
726 | } |
727 | goto retry; | |
728 | } | |
729 | ||
0a8165d7 | 730 | /* |
127e670a JK |
731 | * Freeze all the FS-operations for checkpoint. |
732 | */ | |
cf779cab | 733 | static int block_operations(struct f2fs_sb_info *sbi) |
127e670a | 734 | { |
127e670a JK |
735 | struct writeback_control wbc = { |
736 | .sync_mode = WB_SYNC_ALL, | |
737 | .nr_to_write = LONG_MAX, | |
738 | .for_reclaim = 0, | |
739 | }; | |
c718379b | 740 | struct blk_plug plug; |
cf779cab | 741 | int err = 0; |
c718379b JK |
742 | |
743 | blk_start_plug(&plug); | |
744 | ||
39936837 | 745 | retry_flush_dents: |
e479556b | 746 | f2fs_lock_all(sbi); |
127e670a | 747 | /* write all the dirty dentry pages */ |
127e670a | 748 | if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
e479556b | 749 | f2fs_unlock_all(sbi); |
39936837 | 750 | sync_dirty_dir_inodes(sbi); |
cf779cab JK |
751 | if (unlikely(f2fs_cp_error(sbi))) { |
752 | err = -EIO; | |
753 | goto out; | |
754 | } | |
39936837 | 755 | goto retry_flush_dents; |
127e670a JK |
756 | } |
757 | ||
127e670a | 758 | /* |
e1c42045 | 759 | * POR: we should ensure that there are no dirty node pages |
127e670a JK |
760 | * until finishing nat/sit flush. |
761 | */ | |
39936837 | 762 | retry_flush_nodes: |
b3582c68 | 763 | down_write(&sbi->node_write); |
127e670a JK |
764 | |
765 | if (get_pages(sbi, F2FS_DIRTY_NODES)) { | |
b3582c68 | 766 | up_write(&sbi->node_write); |
39936837 | 767 | sync_node_pages(sbi, 0, &wbc); |
cf779cab JK |
768 | if (unlikely(f2fs_cp_error(sbi))) { |
769 | f2fs_unlock_all(sbi); | |
770 | err = -EIO; | |
771 | goto out; | |
772 | } | |
39936837 | 773 | goto retry_flush_nodes; |
127e670a | 774 | } |
cf779cab | 775 | out: |
c718379b | 776 | blk_finish_plug(&plug); |
cf779cab | 777 | return err; |
127e670a JK |
778 | } |
779 | ||
780 | static void unblock_operations(struct f2fs_sb_info *sbi) | |
781 | { | |
b3582c68 | 782 | up_write(&sbi->node_write); |
e479556b | 783 | f2fs_unlock_all(sbi); |
127e670a JK |
784 | } |
785 | ||
fb51b5ef CL |
786 | static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) |
787 | { | |
788 | DEFINE_WAIT(wait); | |
789 | ||
790 | for (;;) { | |
791 | prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); | |
792 | ||
793 | if (!get_pages(sbi, F2FS_WRITEBACK)) | |
794 | break; | |
795 | ||
796 | io_schedule(); | |
797 | } | |
798 | finish_wait(&sbi->cp_wait, &wait); | |
799 | } | |
800 | ||
127e670a JK |
801 | static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) |
802 | { | |
803 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
cf2271e7 | 804 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
127e670a JK |
805 | nid_t last_nid = 0; |
806 | block_t start_blk; | |
807 | struct page *cp_page; | |
808 | unsigned int data_sum_blocks, orphan_blocks; | |
7e586fa0 | 809 | __u32 crc32 = 0; |
127e670a | 810 | void *kaddr; |
127e670a | 811 | int i; |
1dbe4152 | 812 | int cp_payload_blks = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
127e670a | 813 | |
1e87a78d JK |
814 | /* |
815 | * This avoids to conduct wrong roll-forward operations and uses | |
816 | * metapages, so should be called prior to sync_meta_pages below. | |
817 | */ | |
cf2271e7 | 818 | discard_next_dnode(sbi, NEXT_FREE_BLKADDR(sbi, curseg)); |
127e670a JK |
819 | |
820 | /* Flush all the NAT/SIT pages */ | |
cf779cab | 821 | while (get_pages(sbi, F2FS_DIRTY_META)) { |
127e670a | 822 | sync_meta_pages(sbi, META, LONG_MAX); |
cf779cab JK |
823 | if (unlikely(f2fs_cp_error(sbi))) |
824 | return; | |
825 | } | |
127e670a JK |
826 | |
827 | next_free_nid(sbi, &last_nid); | |
828 | ||
829 | /* | |
830 | * modify checkpoint | |
831 | * version number is already updated | |
832 | */ | |
833 | ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi)); | |
834 | ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); | |
835 | ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); | |
b5b82205 | 836 | for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { |
127e670a JK |
837 | ckpt->cur_node_segno[i] = |
838 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); | |
839 | ckpt->cur_node_blkoff[i] = | |
840 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); | |
841 | ckpt->alloc_type[i + CURSEG_HOT_NODE] = | |
842 | curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); | |
843 | } | |
b5b82205 | 844 | for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { |
127e670a JK |
845 | ckpt->cur_data_segno[i] = |
846 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); | |
847 | ckpt->cur_data_blkoff[i] = | |
848 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); | |
849 | ckpt->alloc_type[i + CURSEG_HOT_DATA] = | |
850 | curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); | |
851 | } | |
852 | ||
853 | ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); | |
854 | ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); | |
855 | ckpt->next_free_nid = cpu_to_le32(last_nid); | |
856 | ||
857 | /* 2 cp + n data seg summary + orphan inode blocks */ | |
858 | data_sum_blocks = npages_for_summary_flush(sbi); | |
b5b82205 | 859 | if (data_sum_blocks < NR_CURSEG_DATA_TYPE) |
25ca923b | 860 | set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 861 | else |
25ca923b | 862 | clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 863 | |
b5b82205 | 864 | orphan_blocks = GET_ORPHAN_BLOCKS(sbi->n_orphans); |
1dbe4152 CL |
865 | ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
866 | orphan_blocks); | |
127e670a JK |
867 | |
868 | if (is_umount) { | |
25ca923b | 869 | set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
b5b82205 | 870 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+ |
1dbe4152 CL |
871 | cp_payload_blks + data_sum_blocks + |
872 | orphan_blocks + NR_CURSEG_NODE_TYPE); | |
127e670a | 873 | } else { |
25ca923b | 874 | clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
b5b82205 | 875 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + |
1dbe4152 CL |
876 | cp_payload_blks + data_sum_blocks + |
877 | orphan_blocks); | |
127e670a JK |
878 | } |
879 | ||
880 | if (sbi->n_orphans) | |
25ca923b | 881 | set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 882 | else |
25ca923b | 883 | clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 884 | |
2ae4c673 JK |
885 | if (sbi->need_fsck) |
886 | set_ckpt_flags(ckpt, CP_FSCK_FLAG); | |
887 | ||
127e670a JK |
888 | /* update SIT/NAT bitmap */ |
889 | get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); | |
890 | get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); | |
891 | ||
892 | crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset)); | |
7e586fa0 JK |
893 | *((__le32 *)((unsigned char *)ckpt + |
894 | le32_to_cpu(ckpt->checksum_offset))) | |
127e670a JK |
895 | = cpu_to_le32(crc32); |
896 | ||
897 | start_blk = __start_cp_addr(sbi); | |
898 | ||
899 | /* write out checkpoint buffer at block 0 */ | |
900 | cp_page = grab_meta_page(sbi, start_blk++); | |
901 | kaddr = page_address(cp_page); | |
902 | memcpy(kaddr, ckpt, (1 << sbi->log_blocksize)); | |
903 | set_page_dirty(cp_page); | |
904 | f2fs_put_page(cp_page, 1); | |
905 | ||
1dbe4152 CL |
906 | for (i = 1; i < 1 + cp_payload_blks; i++) { |
907 | cp_page = grab_meta_page(sbi, start_blk++); | |
908 | kaddr = page_address(cp_page); | |
909 | memcpy(kaddr, (char *)ckpt + i * F2FS_BLKSIZE, | |
910 | (1 << sbi->log_blocksize)); | |
911 | set_page_dirty(cp_page); | |
912 | f2fs_put_page(cp_page, 1); | |
913 | } | |
914 | ||
127e670a JK |
915 | if (sbi->n_orphans) { |
916 | write_orphan_inodes(sbi, start_blk); | |
917 | start_blk += orphan_blocks; | |
918 | } | |
919 | ||
920 | write_data_summaries(sbi, start_blk); | |
921 | start_blk += data_sum_blocks; | |
922 | if (is_umount) { | |
923 | write_node_summaries(sbi, start_blk); | |
924 | start_blk += NR_CURSEG_NODE_TYPE; | |
925 | } | |
926 | ||
927 | /* writeout checkpoint block */ | |
928 | cp_page = grab_meta_page(sbi, start_blk); | |
929 | kaddr = page_address(cp_page); | |
930 | memcpy(kaddr, ckpt, (1 << sbi->log_blocksize)); | |
931 | set_page_dirty(cp_page); | |
932 | f2fs_put_page(cp_page, 1); | |
933 | ||
934 | /* wait for previous submitted node/meta pages writeback */ | |
fb51b5ef | 935 | wait_on_all_pages_writeback(sbi); |
127e670a | 936 | |
cf779cab JK |
937 | if (unlikely(f2fs_cp_error(sbi))) |
938 | return; | |
939 | ||
4ef51a8f | 940 | filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX); |
9df27d98 | 941 | filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX); |
127e670a JK |
942 | |
943 | /* update user_block_counts */ | |
944 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
945 | sbi->alloc_valid_block_count = 0; | |
946 | ||
947 | /* Here, we only have one bio having CP pack */ | |
577e3495 | 948 | sync_meta_pages(sbi, META_FLUSH, LONG_MAX); |
127e670a | 949 | |
cf779cab JK |
950 | release_dirty_inode(sbi); |
951 | ||
952 | if (unlikely(f2fs_cp_error(sbi))) | |
953 | return; | |
954 | ||
955 | clear_prefree_segments(sbi); | |
956 | F2FS_RESET_SB_DIRT(sbi); | |
127e670a JK |
957 | } |
958 | ||
0a8165d7 | 959 | /* |
e1c42045 | 960 | * We guarantee that this checkpoint procedure will not fail. |
127e670a | 961 | */ |
43727527 | 962 | void write_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) |
127e670a JK |
963 | { |
964 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
965 | unsigned long long ckpt_ver; | |
966 | ||
2af4bd6c NJ |
967 | trace_f2fs_write_checkpoint(sbi->sb, is_umount, "start block_ops"); |
968 | ||
43727527 | 969 | mutex_lock(&sbi->cp_mutex); |
8501017e JK |
970 | |
971 | if (!sbi->s_dirty) | |
972 | goto out; | |
cf779cab JK |
973 | if (unlikely(f2fs_cp_error(sbi))) |
974 | goto out; | |
975 | if (block_operations(sbi)) | |
976 | goto out; | |
127e670a | 977 | |
2af4bd6c NJ |
978 | trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish block_ops"); |
979 | ||
458e6197 JK |
980 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
981 | f2fs_submit_merged_bio(sbi, NODE, WRITE); | |
982 | f2fs_submit_merged_bio(sbi, META, WRITE); | |
127e670a JK |
983 | |
984 | /* | |
985 | * update checkpoint pack index | |
986 | * Increase the version number so that | |
987 | * SIT entries and seg summaries are written at correct place | |
988 | */ | |
d71b5564 | 989 | ckpt_ver = cur_cp_version(ckpt); |
127e670a JK |
990 | ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
991 | ||
992 | /* write cached NAT/SIT entries to NAT/SIT area */ | |
993 | flush_nat_entries(sbi); | |
994 | flush_sit_entries(sbi); | |
995 | ||
127e670a JK |
996 | /* unlock all the fs_lock[] in do_checkpoint() */ |
997 | do_checkpoint(sbi, is_umount); | |
998 | ||
999 | unblock_operations(sbi); | |
942e0be6 | 1000 | stat_inc_cp_count(sbi->stat_info); |
8501017e JK |
1001 | out: |
1002 | mutex_unlock(&sbi->cp_mutex); | |
2af4bd6c | 1003 | trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish checkpoint"); |
127e670a JK |
1004 | } |
1005 | ||
6451e041 | 1006 | void init_ino_entry_info(struct f2fs_sb_info *sbi) |
127e670a | 1007 | { |
6451e041 JK |
1008 | int i; |
1009 | ||
1010 | for (i = 0; i < MAX_INO_ENTRY; i++) { | |
39efac41 | 1011 | INIT_RADIX_TREE(&sbi->ino_root[i], GFP_ATOMIC); |
6451e041 JK |
1012 | spin_lock_init(&sbi->ino_lock[i]); |
1013 | INIT_LIST_HEAD(&sbi->ino_list[i]); | |
1014 | } | |
1015 | ||
0d47c1ad GZ |
1016 | /* |
1017 | * considering 512 blocks in a segment 8 blocks are needed for cp | |
1018 | * and log segment summaries. Remaining blocks are used to keep | |
1019 | * orphan entries with the limitation one reserved segment | |
1020 | * for cp pack we can have max 1020*504 orphan entries | |
1021 | */ | |
6451e041 | 1022 | sbi->n_orphans = 0; |
b5b82205 CY |
1023 | sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS - |
1024 | NR_CURSEG_TYPE) * F2FS_ORPHANS_PER_BLOCK; | |
127e670a JK |
1025 | } |
1026 | ||
6e6093a8 | 1027 | int __init create_checkpoint_caches(void) |
127e670a | 1028 | { |
6451e041 JK |
1029 | ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
1030 | sizeof(struct ino_entry)); | |
1031 | if (!ino_entry_slab) | |
127e670a JK |
1032 | return -ENOMEM; |
1033 | inode_entry_slab = f2fs_kmem_cache_create("f2fs_dirty_dir_entry", | |
e8512d2e | 1034 | sizeof(struct dir_inode_entry)); |
6bacf52f | 1035 | if (!inode_entry_slab) { |
6451e041 | 1036 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1037 | return -ENOMEM; |
1038 | } | |
1039 | return 0; | |
1040 | } | |
1041 | ||
1042 | void destroy_checkpoint_caches(void) | |
1043 | { | |
6451e041 | 1044 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1045 | kmem_cache_destroy(inode_entry_slab); |
1046 | } |