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 | ||
4c521f49 JK |
75 | struct page *get_meta_page_ra(struct f2fs_sb_info *sbi, pgoff_t index) |
76 | { | |
77 | bool readahead = false; | |
78 | struct page *page; | |
79 | ||
80 | page = find_get_page(META_MAPPING(sbi), index); | |
81 | if (!page || (page && !PageUptodate(page))) | |
82 | readahead = true; | |
83 | f2fs_put_page(page, 0); | |
84 | ||
85 | if (readahead) | |
90a893c7 | 86 | ra_meta_pages(sbi, index, MAX_BIO_BLOCKS(sbi), META_POR); |
4c521f49 JK |
87 | return get_meta_page(sbi, index); |
88 | } | |
89 | ||
90 | static inline block_t get_max_meta_blks(struct f2fs_sb_info *sbi, int type) | |
662befda CY |
91 | { |
92 | switch (type) { | |
93 | case META_NAT: | |
94 | return NM_I(sbi)->max_nid / NAT_ENTRY_PER_BLOCK; | |
95 | case META_SIT: | |
96 | return SIT_BLK_CNT(sbi); | |
81c1a0f1 | 97 | case META_SSA: |
662befda CY |
98 | case META_CP: |
99 | return 0; | |
4c521f49 | 100 | case META_POR: |
7cd8558b | 101 | return MAX_BLKADDR(sbi); |
662befda CY |
102 | default: |
103 | BUG(); | |
104 | } | |
105 | } | |
106 | ||
107 | /* | |
81c1a0f1 | 108 | * Readahead CP/NAT/SIT/SSA pages |
662befda | 109 | */ |
4c521f49 | 110 | int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, int type) |
662befda CY |
111 | { |
112 | block_t prev_blk_addr = 0; | |
113 | struct page *page; | |
4c521f49 JK |
114 | block_t blkno = start; |
115 | block_t max_blks = get_max_meta_blks(sbi, type); | |
662befda CY |
116 | |
117 | struct f2fs_io_info fio = { | |
118 | .type = META, | |
119 | .rw = READ_SYNC | REQ_META | REQ_PRIO | |
120 | }; | |
121 | ||
122 | for (; nrpages-- > 0; blkno++) { | |
123 | block_t blk_addr; | |
124 | ||
125 | switch (type) { | |
126 | case META_NAT: | |
127 | /* get nat block addr */ | |
128 | if (unlikely(blkno >= max_blks)) | |
129 | blkno = 0; | |
130 | blk_addr = current_nat_addr(sbi, | |
131 | blkno * NAT_ENTRY_PER_BLOCK); | |
132 | break; | |
133 | case META_SIT: | |
134 | /* get sit block addr */ | |
135 | if (unlikely(blkno >= max_blks)) | |
136 | goto out; | |
137 | blk_addr = current_sit_addr(sbi, | |
138 | blkno * SIT_ENTRY_PER_BLOCK); | |
139 | if (blkno != start && prev_blk_addr + 1 != blk_addr) | |
140 | goto out; | |
141 | prev_blk_addr = blk_addr; | |
142 | break; | |
81c1a0f1 | 143 | case META_SSA: |
662befda | 144 | case META_CP: |
4c521f49 JK |
145 | case META_POR: |
146 | if (unlikely(blkno >= max_blks)) | |
147 | goto out; | |
7cd8558b | 148 | if (unlikely(blkno < SEG0_BLKADDR(sbi))) |
4c521f49 | 149 | goto out; |
662befda CY |
150 | blk_addr = blkno; |
151 | break; | |
152 | default: | |
153 | BUG(); | |
154 | } | |
155 | ||
156 | page = grab_cache_page(META_MAPPING(sbi), blk_addr); | |
157 | if (!page) | |
158 | continue; | |
159 | if (PageUptodate(page)) { | |
662befda CY |
160 | f2fs_put_page(page, 1); |
161 | continue; | |
162 | } | |
163 | ||
164 | f2fs_submit_page_mbio(sbi, page, blk_addr, &fio); | |
662befda CY |
165 | f2fs_put_page(page, 0); |
166 | } | |
167 | out: | |
168 | f2fs_submit_merged_bio(sbi, META, READ); | |
169 | return blkno - start; | |
170 | } | |
171 | ||
127e670a JK |
172 | static int f2fs_write_meta_page(struct page *page, |
173 | struct writeback_control *wbc) | |
174 | { | |
4081363f | 175 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
127e670a | 176 | |
ecda0de3 CY |
177 | trace_f2fs_writepage(page, META); |
178 | ||
203681f6 | 179 | if (unlikely(sbi->por_doing)) |
cfb271d4 | 180 | goto redirty_out; |
cfb271d4 CY |
181 | if (wbc->for_reclaim) |
182 | goto redirty_out; | |
1e968fdf | 183 | if (unlikely(f2fs_cp_error(sbi))) |
cf779cab | 184 | goto redirty_out; |
127e670a | 185 | |
3cb5ad15 | 186 | f2fs_wait_on_page_writeback(page, META); |
577e3495 JK |
187 | write_meta_page(sbi, page); |
188 | dec_page_count(sbi, F2FS_DIRTY_META); | |
189 | unlock_page(page); | |
190 | return 0; | |
cfb271d4 CY |
191 | |
192 | redirty_out: | |
76f60268 | 193 | redirty_page_for_writepage(wbc, page); |
cfb271d4 | 194 | return AOP_WRITEPAGE_ACTIVATE; |
127e670a JK |
195 | } |
196 | ||
197 | static int f2fs_write_meta_pages(struct address_space *mapping, | |
198 | struct writeback_control *wbc) | |
199 | { | |
4081363f | 200 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
50c8cdb3 | 201 | long diff, written; |
127e670a | 202 | |
e5748434 CY |
203 | trace_f2fs_writepages(mapping->host, wbc, META); |
204 | ||
5459aa97 | 205 | /* collect a number of dirty meta pages and write together */ |
50c8cdb3 JK |
206 | if (wbc->for_kupdate || |
207 | get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) | |
d3baf95d | 208 | goto skip_write; |
127e670a JK |
209 | |
210 | /* if mounting is failed, skip writing node pages */ | |
211 | mutex_lock(&sbi->cp_mutex); | |
50c8cdb3 JK |
212 | diff = nr_pages_to_write(sbi, META, wbc); |
213 | written = sync_meta_pages(sbi, META, wbc->nr_to_write); | |
127e670a | 214 | mutex_unlock(&sbi->cp_mutex); |
50c8cdb3 | 215 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); |
127e670a | 216 | return 0; |
d3baf95d JK |
217 | |
218 | skip_write: | |
219 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); | |
220 | return 0; | |
127e670a JK |
221 | } |
222 | ||
223 | long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, | |
224 | long nr_to_write) | |
225 | { | |
9df27d98 | 226 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a JK |
227 | pgoff_t index = 0, end = LONG_MAX; |
228 | struct pagevec pvec; | |
229 | long nwritten = 0; | |
230 | struct writeback_control wbc = { | |
231 | .for_reclaim = 0, | |
232 | }; | |
233 | ||
234 | pagevec_init(&pvec, 0); | |
235 | ||
236 | while (index <= end) { | |
237 | int i, nr_pages; | |
238 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, | |
239 | PAGECACHE_TAG_DIRTY, | |
240 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
cfb271d4 | 241 | if (unlikely(nr_pages == 0)) |
127e670a JK |
242 | break; |
243 | ||
244 | for (i = 0; i < nr_pages; i++) { | |
245 | struct page *page = pvec.pages[i]; | |
203681f6 | 246 | |
127e670a | 247 | lock_page(page); |
203681f6 JK |
248 | |
249 | if (unlikely(page->mapping != mapping)) { | |
250 | continue_unlock: | |
251 | unlock_page(page); | |
252 | continue; | |
253 | } | |
254 | if (!PageDirty(page)) { | |
255 | /* someone wrote it for us */ | |
256 | goto continue_unlock; | |
257 | } | |
258 | ||
259 | if (!clear_page_dirty_for_io(page)) | |
260 | goto continue_unlock; | |
261 | ||
577e3495 JK |
262 | if (f2fs_write_meta_page(page, &wbc)) { |
263 | unlock_page(page); | |
264 | break; | |
265 | } | |
cfb271d4 CY |
266 | nwritten++; |
267 | if (unlikely(nwritten >= nr_to_write)) | |
127e670a JK |
268 | break; |
269 | } | |
270 | pagevec_release(&pvec); | |
271 | cond_resched(); | |
272 | } | |
273 | ||
274 | if (nwritten) | |
458e6197 | 275 | f2fs_submit_merged_bio(sbi, type, WRITE); |
127e670a JK |
276 | |
277 | return nwritten; | |
278 | } | |
279 | ||
280 | static int f2fs_set_meta_page_dirty(struct page *page) | |
281 | { | |
26c6b887 JK |
282 | trace_f2fs_set_page_dirty(page, META); |
283 | ||
127e670a JK |
284 | SetPageUptodate(page); |
285 | if (!PageDirty(page)) { | |
286 | __set_page_dirty_nobuffers(page); | |
4081363f | 287 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); |
127e670a JK |
288 | return 1; |
289 | } | |
290 | return 0; | |
291 | } | |
292 | ||
293 | const struct address_space_operations f2fs_meta_aops = { | |
294 | .writepage = f2fs_write_meta_page, | |
295 | .writepages = f2fs_write_meta_pages, | |
296 | .set_page_dirty = f2fs_set_meta_page_dirty, | |
297 | }; | |
298 | ||
6451e041 | 299 | static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 300 | { |
39efac41 JK |
301 | struct ino_entry *e; |
302 | retry: | |
6451e041 | 303 | spin_lock(&sbi->ino_lock[type]); |
39efac41 JK |
304 | |
305 | e = radix_tree_lookup(&sbi->ino_root[type], ino); | |
306 | if (!e) { | |
307 | e = kmem_cache_alloc(ino_entry_slab, GFP_ATOMIC); | |
308 | if (!e) { | |
6451e041 | 309 | spin_unlock(&sbi->ino_lock[type]); |
39efac41 | 310 | goto retry; |
953e6cc6 | 311 | } |
39efac41 JK |
312 | if (radix_tree_insert(&sbi->ino_root[type], ino, e)) { |
313 | spin_unlock(&sbi->ino_lock[type]); | |
314 | kmem_cache_free(ino_entry_slab, e); | |
315 | goto retry; | |
316 | } | |
317 | memset(e, 0, sizeof(struct ino_entry)); | |
318 | e->ino = ino; | |
953e6cc6 | 319 | |
39efac41 JK |
320 | list_add_tail(&e->list, &sbi->ino_list[type]); |
321 | } | |
6451e041 | 322 | spin_unlock(&sbi->ino_lock[type]); |
953e6cc6 JK |
323 | } |
324 | ||
6451e041 | 325 | static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 326 | { |
6451e041 | 327 | struct ino_entry *e; |
953e6cc6 | 328 | |
6451e041 | 329 | spin_lock(&sbi->ino_lock[type]); |
39efac41 JK |
330 | e = radix_tree_lookup(&sbi->ino_root[type], ino); |
331 | if (e) { | |
332 | list_del(&e->list); | |
333 | radix_tree_delete(&sbi->ino_root[type], ino); | |
334 | if (type == ORPHAN_INO) | |
953e6cc6 | 335 | sbi->n_orphans--; |
39efac41 JK |
336 | spin_unlock(&sbi->ino_lock[type]); |
337 | kmem_cache_free(ino_entry_slab, e); | |
338 | return; | |
953e6cc6 | 339 | } |
6451e041 | 340 | spin_unlock(&sbi->ino_lock[type]); |
953e6cc6 JK |
341 | } |
342 | ||
fff04f90 JK |
343 | void add_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) |
344 | { | |
345 | /* add new dirty ino entry into list */ | |
346 | __add_ino_entry(sbi, ino, type); | |
347 | } | |
348 | ||
349 | void remove_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) | |
350 | { | |
351 | /* remove dirty ino entry from list */ | |
352 | __remove_ino_entry(sbi, ino, type); | |
353 | } | |
354 | ||
355 | /* mode should be APPEND_INO or UPDATE_INO */ | |
356 | bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) | |
357 | { | |
358 | struct ino_entry *e; | |
359 | spin_lock(&sbi->ino_lock[mode]); | |
360 | e = radix_tree_lookup(&sbi->ino_root[mode], ino); | |
361 | spin_unlock(&sbi->ino_lock[mode]); | |
362 | return e ? true : false; | |
363 | } | |
364 | ||
6f12ac25 | 365 | void release_dirty_inode(struct f2fs_sb_info *sbi) |
fff04f90 JK |
366 | { |
367 | struct ino_entry *e, *tmp; | |
368 | int i; | |
369 | ||
370 | for (i = APPEND_INO; i <= UPDATE_INO; i++) { | |
371 | spin_lock(&sbi->ino_lock[i]); | |
372 | list_for_each_entry_safe(e, tmp, &sbi->ino_list[i], list) { | |
373 | list_del(&e->list); | |
374 | radix_tree_delete(&sbi->ino_root[i], e->ino); | |
375 | kmem_cache_free(ino_entry_slab, e); | |
376 | } | |
377 | spin_unlock(&sbi->ino_lock[i]); | |
378 | } | |
379 | } | |
380 | ||
cbd56e7d | 381 | int acquire_orphan_inode(struct f2fs_sb_info *sbi) |
127e670a | 382 | { |
127e670a JK |
383 | int err = 0; |
384 | ||
6451e041 | 385 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
0d47c1ad | 386 | if (unlikely(sbi->n_orphans >= sbi->max_orphans)) |
127e670a | 387 | err = -ENOSPC; |
cbd56e7d JK |
388 | else |
389 | sbi->n_orphans++; | |
6451e041 | 390 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
0d47c1ad | 391 | |
127e670a JK |
392 | return err; |
393 | } | |
394 | ||
cbd56e7d JK |
395 | void release_orphan_inode(struct f2fs_sb_info *sbi) |
396 | { | |
6451e041 | 397 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
9850cf4a | 398 | f2fs_bug_on(sbi, sbi->n_orphans == 0); |
cbd56e7d | 399 | sbi->n_orphans--; |
6451e041 | 400 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
cbd56e7d JK |
401 | } |
402 | ||
127e670a JK |
403 | void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
404 | { | |
39efac41 | 405 | /* add new orphan ino entry into list */ |
6451e041 | 406 | __add_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
407 | } |
408 | ||
409 | void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
410 | { | |
953e6cc6 | 411 | /* remove orphan entry from orphan list */ |
6451e041 | 412 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
413 | } |
414 | ||
415 | static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
416 | { | |
417 | struct inode *inode = f2fs_iget(sbi->sb, ino); | |
9850cf4a | 418 | f2fs_bug_on(sbi, IS_ERR(inode)); |
127e670a JK |
419 | clear_nlink(inode); |
420 | ||
421 | /* truncate all the data during iput */ | |
422 | iput(inode); | |
423 | } | |
424 | ||
8f99a946 | 425 | void recover_orphan_inodes(struct f2fs_sb_info *sbi) |
127e670a JK |
426 | { |
427 | block_t start_blk, orphan_blkaddr, i, j; | |
428 | ||
25ca923b | 429 | if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG)) |
8f99a946 | 430 | return; |
127e670a | 431 | |
aabe5136 | 432 | sbi->por_doing = true; |
1dbe4152 CL |
433 | |
434 | start_blk = __start_cp_addr(sbi) + 1 + | |
435 | le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); | |
127e670a JK |
436 | orphan_blkaddr = __start_sum_addr(sbi) - 1; |
437 | ||
662befda CY |
438 | ra_meta_pages(sbi, start_blk, orphan_blkaddr, META_CP); |
439 | ||
127e670a JK |
440 | for (i = 0; i < orphan_blkaddr; i++) { |
441 | struct page *page = get_meta_page(sbi, start_blk + i); | |
442 | struct f2fs_orphan_block *orphan_blk; | |
443 | ||
444 | orphan_blk = (struct f2fs_orphan_block *)page_address(page); | |
445 | for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { | |
446 | nid_t ino = le32_to_cpu(orphan_blk->ino[j]); | |
447 | recover_orphan_inode(sbi, ino); | |
448 | } | |
449 | f2fs_put_page(page, 1); | |
450 | } | |
451 | /* clear Orphan Flag */ | |
25ca923b | 452 | clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG); |
aabe5136 | 453 | sbi->por_doing = false; |
8f99a946 | 454 | return; |
127e670a JK |
455 | } |
456 | ||
457 | static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) | |
458 | { | |
502c6e0b | 459 | struct list_head *head; |
127e670a | 460 | struct f2fs_orphan_block *orphan_blk = NULL; |
127e670a | 461 | unsigned int nentries = 0; |
4531929e | 462 | unsigned short index; |
b5b82205 CY |
463 | unsigned short orphan_blocks = |
464 | (unsigned short)GET_ORPHAN_BLOCKS(sbi->n_orphans); | |
4531929e | 465 | struct page *page = NULL; |
6451e041 | 466 | struct ino_entry *orphan = NULL; |
127e670a | 467 | |
4531929e | 468 | for (index = 0; index < orphan_blocks; index++) |
63f5384c | 469 | grab_meta_page(sbi, start_blk + index); |
127e670a | 470 | |
4531929e | 471 | index = 1; |
6451e041 JK |
472 | spin_lock(&sbi->ino_lock[ORPHAN_INO]); |
473 | head = &sbi->ino_list[ORPHAN_INO]; | |
127e670a JK |
474 | |
475 | /* loop for each orphan inode entry and write them in Jornal block */ | |
502c6e0b GZ |
476 | list_for_each_entry(orphan, head, list) { |
477 | if (!page) { | |
63f5384c | 478 | page = find_get_page(META_MAPPING(sbi), start_blk++); |
9850cf4a | 479 | f2fs_bug_on(sbi, !page); |
502c6e0b GZ |
480 | orphan_blk = |
481 | (struct f2fs_orphan_block *)page_address(page); | |
482 | memset(orphan_blk, 0, sizeof(*orphan_blk)); | |
63f5384c | 483 | f2fs_put_page(page, 0); |
502c6e0b | 484 | } |
127e670a | 485 | |
36795567 | 486 | orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
127e670a | 487 | |
36795567 | 488 | if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
127e670a JK |
489 | /* |
490 | * an orphan block is full of 1020 entries, | |
491 | * then we need to flush current orphan blocks | |
492 | * and bring another one in memory | |
493 | */ | |
494 | orphan_blk->blk_addr = cpu_to_le16(index); | |
495 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
496 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
497 | set_page_dirty(page); | |
498 | f2fs_put_page(page, 1); | |
499 | index++; | |
127e670a JK |
500 | nentries = 0; |
501 | page = NULL; | |
502 | } | |
502c6e0b | 503 | } |
127e670a | 504 | |
502c6e0b GZ |
505 | if (page) { |
506 | orphan_blk->blk_addr = cpu_to_le16(index); | |
507 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
508 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
509 | set_page_dirty(page); | |
510 | f2fs_put_page(page, 1); | |
127e670a | 511 | } |
502c6e0b | 512 | |
6451e041 | 513 | spin_unlock(&sbi->ino_lock[ORPHAN_INO]); |
127e670a JK |
514 | } |
515 | ||
516 | static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, | |
517 | block_t cp_addr, unsigned long long *version) | |
518 | { | |
519 | struct page *cp_page_1, *cp_page_2 = NULL; | |
520 | unsigned long blk_size = sbi->blocksize; | |
521 | struct f2fs_checkpoint *cp_block; | |
522 | unsigned long long cur_version = 0, pre_version = 0; | |
127e670a | 523 | size_t crc_offset; |
7e586fa0 | 524 | __u32 crc = 0; |
127e670a JK |
525 | |
526 | /* Read the 1st cp block in this CP pack */ | |
527 | cp_page_1 = get_meta_page(sbi, cp_addr); | |
528 | ||
529 | /* get the version number */ | |
530 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1); | |
531 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
532 | if (crc_offset >= blk_size) | |
533 | goto invalid_cp1; | |
534 | ||
7e586fa0 | 535 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
536 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
537 | goto invalid_cp1; | |
538 | ||
d71b5564 | 539 | pre_version = cur_cp_version(cp_block); |
127e670a JK |
540 | |
541 | /* Read the 2nd cp block in this CP pack */ | |
25ca923b | 542 | cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1; |
127e670a JK |
543 | cp_page_2 = get_meta_page(sbi, cp_addr); |
544 | ||
545 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2); | |
546 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
547 | if (crc_offset >= blk_size) | |
548 | goto invalid_cp2; | |
549 | ||
7e586fa0 | 550 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
551 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
552 | goto invalid_cp2; | |
553 | ||
d71b5564 | 554 | cur_version = cur_cp_version(cp_block); |
127e670a JK |
555 | |
556 | if (cur_version == pre_version) { | |
557 | *version = cur_version; | |
558 | f2fs_put_page(cp_page_2, 1); | |
559 | return cp_page_1; | |
560 | } | |
561 | invalid_cp2: | |
562 | f2fs_put_page(cp_page_2, 1); | |
563 | invalid_cp1: | |
564 | f2fs_put_page(cp_page_1, 1); | |
565 | return NULL; | |
566 | } | |
567 | ||
568 | int get_valid_checkpoint(struct f2fs_sb_info *sbi) | |
569 | { | |
570 | struct f2fs_checkpoint *cp_block; | |
571 | struct f2fs_super_block *fsb = sbi->raw_super; | |
572 | struct page *cp1, *cp2, *cur_page; | |
573 | unsigned long blk_size = sbi->blocksize; | |
574 | unsigned long long cp1_version = 0, cp2_version = 0; | |
575 | unsigned long long cp_start_blk_no; | |
1dbe4152 CL |
576 | unsigned int cp_blks = 1 + le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
577 | block_t cp_blk_no; | |
578 | int i; | |
127e670a | 579 | |
1dbe4152 | 580 | sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL); |
127e670a JK |
581 | if (!sbi->ckpt) |
582 | return -ENOMEM; | |
583 | /* | |
584 | * Finding out valid cp block involves read both | |
585 | * sets( cp pack1 and cp pack 2) | |
586 | */ | |
587 | cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
588 | cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); | |
589 | ||
590 | /* The second checkpoint pack should start at the next segment */ | |
f9a4e6df JK |
591 | cp_start_blk_no += ((unsigned long long)1) << |
592 | le32_to_cpu(fsb->log_blocks_per_seg); | |
127e670a JK |
593 | cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
594 | ||
595 | if (cp1 && cp2) { | |
596 | if (ver_after(cp2_version, cp1_version)) | |
597 | cur_page = cp2; | |
598 | else | |
599 | cur_page = cp1; | |
600 | } else if (cp1) { | |
601 | cur_page = cp1; | |
602 | } else if (cp2) { | |
603 | cur_page = cp2; | |
604 | } else { | |
605 | goto fail_no_cp; | |
606 | } | |
607 | ||
608 | cp_block = (struct f2fs_checkpoint *)page_address(cur_page); | |
609 | memcpy(sbi->ckpt, cp_block, blk_size); | |
610 | ||
1dbe4152 CL |
611 | if (cp_blks <= 1) |
612 | goto done; | |
613 | ||
614 | cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
615 | if (cur_page == cp2) | |
616 | cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); | |
617 | ||
618 | for (i = 1; i < cp_blks; i++) { | |
619 | void *sit_bitmap_ptr; | |
620 | unsigned char *ckpt = (unsigned char *)sbi->ckpt; | |
621 | ||
622 | cur_page = get_meta_page(sbi, cp_blk_no + i); | |
623 | sit_bitmap_ptr = page_address(cur_page); | |
624 | memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); | |
625 | f2fs_put_page(cur_page, 1); | |
626 | } | |
627 | done: | |
127e670a JK |
628 | f2fs_put_page(cp1, 1); |
629 | f2fs_put_page(cp2, 1); | |
630 | return 0; | |
631 | ||
632 | fail_no_cp: | |
633 | kfree(sbi->ckpt); | |
634 | return -EINVAL; | |
635 | } | |
636 | ||
5deb8267 | 637 | static int __add_dirty_inode(struct inode *inode, struct dir_inode_entry *new) |
127e670a | 638 | { |
4081363f | 639 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
127e670a | 640 | |
ed57c27f JK |
641 | if (is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) |
642 | return -EEXIST; | |
2d7b822a | 643 | |
ed57c27f JK |
644 | set_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); |
645 | F2FS_I(inode)->dirty_dir = new; | |
646 | list_add_tail(&new->list, &sbi->dir_inode_list); | |
dcdfff65 | 647 | stat_inc_dirty_dir(sbi); |
5deb8267 JK |
648 | return 0; |
649 | } | |
650 | ||
a7ffdbe2 | 651 | void update_dirty_page(struct inode *inode, struct page *page) |
5deb8267 | 652 | { |
4081363f | 653 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
5deb8267 | 654 | struct dir_inode_entry *new; |
cf0ee0f0 | 655 | int ret = 0; |
5deb8267 | 656 | |
a7ffdbe2 | 657 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)) |
127e670a | 658 | return; |
7bd59381 | 659 | |
a7ffdbe2 JK |
660 | if (!S_ISDIR(inode->i_mode)) { |
661 | inode_inc_dirty_pages(inode); | |
662 | goto out; | |
663 | } | |
664 | ||
7bd59381 | 665 | new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); |
127e670a JK |
666 | new->inode = inode; |
667 | INIT_LIST_HEAD(&new->list); | |
668 | ||
669 | spin_lock(&sbi->dir_inode_lock); | |
cf0ee0f0 | 670 | ret = __add_dirty_inode(inode, new); |
a7ffdbe2 | 671 | inode_inc_dirty_pages(inode); |
5deb8267 | 672 | spin_unlock(&sbi->dir_inode_lock); |
cf0ee0f0 CY |
673 | |
674 | if (ret) | |
675 | kmem_cache_free(inode_entry_slab, new); | |
a7ffdbe2 JK |
676 | out: |
677 | SetPagePrivate(page); | |
5deb8267 JK |
678 | } |
679 | ||
680 | void add_dirty_dir_inode(struct inode *inode) | |
681 | { | |
4081363f | 682 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
7bd59381 GZ |
683 | struct dir_inode_entry *new = |
684 | f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); | |
cf0ee0f0 | 685 | int ret = 0; |
7bd59381 | 686 | |
5deb8267 JK |
687 | new->inode = inode; |
688 | INIT_LIST_HEAD(&new->list); | |
127e670a | 689 | |
5deb8267 | 690 | spin_lock(&sbi->dir_inode_lock); |
cf0ee0f0 | 691 | ret = __add_dirty_inode(inode, new); |
127e670a | 692 | spin_unlock(&sbi->dir_inode_lock); |
cf0ee0f0 CY |
693 | |
694 | if (ret) | |
695 | kmem_cache_free(inode_entry_slab, new); | |
127e670a JK |
696 | } |
697 | ||
698 | void remove_dirty_dir_inode(struct inode *inode) | |
699 | { | |
4081363f | 700 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2d7b822a | 701 | struct dir_inode_entry *entry; |
127e670a JK |
702 | |
703 | if (!S_ISDIR(inode->i_mode)) | |
704 | return; | |
705 | ||
706 | spin_lock(&sbi->dir_inode_lock); | |
a7ffdbe2 | 707 | if (get_dirty_pages(inode) || |
ed57c27f | 708 | !is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) { |
3b10b1fd JK |
709 | spin_unlock(&sbi->dir_inode_lock); |
710 | return; | |
711 | } | |
127e670a | 712 | |
ed57c27f JK |
713 | entry = F2FS_I(inode)->dirty_dir; |
714 | list_del(&entry->list); | |
715 | F2FS_I(inode)->dirty_dir = NULL; | |
716 | clear_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); | |
717 | stat_dec_dirty_dir(sbi); | |
127e670a | 718 | spin_unlock(&sbi->dir_inode_lock); |
ed57c27f | 719 | kmem_cache_free(inode_entry_slab, entry); |
74d0b917 JK |
720 | |
721 | /* Only from the recovery routine */ | |
afc3eda2 JK |
722 | if (is_inode_flag_set(F2FS_I(inode), FI_DELAY_IPUT)) { |
723 | clear_inode_flag(F2FS_I(inode), FI_DELAY_IPUT); | |
74d0b917 | 724 | iput(inode); |
afc3eda2 | 725 | } |
74d0b917 JK |
726 | } |
727 | ||
127e670a JK |
728 | void sync_dirty_dir_inodes(struct f2fs_sb_info *sbi) |
729 | { | |
ce3b7d80 | 730 | struct list_head *head; |
127e670a JK |
731 | struct dir_inode_entry *entry; |
732 | struct inode *inode; | |
733 | retry: | |
734 | spin_lock(&sbi->dir_inode_lock); | |
ce3b7d80 GZ |
735 | |
736 | head = &sbi->dir_inode_list; | |
127e670a JK |
737 | if (list_empty(head)) { |
738 | spin_unlock(&sbi->dir_inode_lock); | |
739 | return; | |
740 | } | |
741 | entry = list_entry(head->next, struct dir_inode_entry, list); | |
742 | inode = igrab(entry->inode); | |
743 | spin_unlock(&sbi->dir_inode_lock); | |
744 | if (inode) { | |
87d6f890 | 745 | filemap_fdatawrite(inode->i_mapping); |
127e670a JK |
746 | iput(inode); |
747 | } else { | |
748 | /* | |
749 | * We should submit bio, since it exists several | |
750 | * wribacking dentry pages in the freeing inode. | |
751 | */ | |
458e6197 | 752 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
127e670a JK |
753 | } |
754 | goto retry; | |
755 | } | |
756 | ||
0a8165d7 | 757 | /* |
127e670a JK |
758 | * Freeze all the FS-operations for checkpoint. |
759 | */ | |
cf779cab | 760 | static int block_operations(struct f2fs_sb_info *sbi) |
127e670a | 761 | { |
127e670a JK |
762 | struct writeback_control wbc = { |
763 | .sync_mode = WB_SYNC_ALL, | |
764 | .nr_to_write = LONG_MAX, | |
765 | .for_reclaim = 0, | |
766 | }; | |
c718379b | 767 | struct blk_plug plug; |
cf779cab | 768 | int err = 0; |
c718379b JK |
769 | |
770 | blk_start_plug(&plug); | |
771 | ||
39936837 | 772 | retry_flush_dents: |
e479556b | 773 | f2fs_lock_all(sbi); |
127e670a | 774 | /* write all the dirty dentry pages */ |
127e670a | 775 | if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
e479556b | 776 | f2fs_unlock_all(sbi); |
39936837 | 777 | sync_dirty_dir_inodes(sbi); |
cf779cab JK |
778 | if (unlikely(f2fs_cp_error(sbi))) { |
779 | err = -EIO; | |
780 | goto out; | |
781 | } | |
39936837 | 782 | goto retry_flush_dents; |
127e670a JK |
783 | } |
784 | ||
127e670a | 785 | /* |
e1c42045 | 786 | * POR: we should ensure that there are no dirty node pages |
127e670a JK |
787 | * until finishing nat/sit flush. |
788 | */ | |
39936837 | 789 | retry_flush_nodes: |
b3582c68 | 790 | down_write(&sbi->node_write); |
127e670a JK |
791 | |
792 | if (get_pages(sbi, F2FS_DIRTY_NODES)) { | |
b3582c68 | 793 | up_write(&sbi->node_write); |
39936837 | 794 | sync_node_pages(sbi, 0, &wbc); |
cf779cab JK |
795 | if (unlikely(f2fs_cp_error(sbi))) { |
796 | f2fs_unlock_all(sbi); | |
797 | err = -EIO; | |
798 | goto out; | |
799 | } | |
39936837 | 800 | goto retry_flush_nodes; |
127e670a | 801 | } |
cf779cab | 802 | out: |
c718379b | 803 | blk_finish_plug(&plug); |
cf779cab | 804 | return err; |
127e670a JK |
805 | } |
806 | ||
807 | static void unblock_operations(struct f2fs_sb_info *sbi) | |
808 | { | |
b3582c68 | 809 | up_write(&sbi->node_write); |
e479556b | 810 | f2fs_unlock_all(sbi); |
127e670a JK |
811 | } |
812 | ||
fb51b5ef CL |
813 | static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) |
814 | { | |
815 | DEFINE_WAIT(wait); | |
816 | ||
817 | for (;;) { | |
818 | prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); | |
819 | ||
820 | if (!get_pages(sbi, F2FS_WRITEBACK)) | |
821 | break; | |
822 | ||
823 | io_schedule(); | |
824 | } | |
825 | finish_wait(&sbi->cp_wait, &wait); | |
826 | } | |
827 | ||
75ab4cb8 | 828 | static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
829 | { |
830 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
cf2271e7 | 831 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
77041823 HY |
832 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
833 | nid_t last_nid = nm_i->next_scan_nid; | |
127e670a JK |
834 | block_t start_blk; |
835 | struct page *cp_page; | |
836 | unsigned int data_sum_blocks, orphan_blocks; | |
7e586fa0 | 837 | __u32 crc32 = 0; |
127e670a | 838 | void *kaddr; |
127e670a | 839 | int i; |
1dbe4152 | 840 | int cp_payload_blks = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
127e670a | 841 | |
1e87a78d JK |
842 | /* |
843 | * This avoids to conduct wrong roll-forward operations and uses | |
844 | * metapages, so should be called prior to sync_meta_pages below. | |
845 | */ | |
cf2271e7 | 846 | discard_next_dnode(sbi, NEXT_FREE_BLKADDR(sbi, curseg)); |
127e670a JK |
847 | |
848 | /* Flush all the NAT/SIT pages */ | |
cf779cab | 849 | while (get_pages(sbi, F2FS_DIRTY_META)) { |
127e670a | 850 | sync_meta_pages(sbi, META, LONG_MAX); |
cf779cab JK |
851 | if (unlikely(f2fs_cp_error(sbi))) |
852 | return; | |
853 | } | |
127e670a JK |
854 | |
855 | next_free_nid(sbi, &last_nid); | |
856 | ||
857 | /* | |
858 | * modify checkpoint | |
859 | * version number is already updated | |
860 | */ | |
861 | ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi)); | |
862 | ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); | |
863 | ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); | |
b5b82205 | 864 | for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { |
127e670a JK |
865 | ckpt->cur_node_segno[i] = |
866 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); | |
867 | ckpt->cur_node_blkoff[i] = | |
868 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); | |
869 | ckpt->alloc_type[i + CURSEG_HOT_NODE] = | |
870 | curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); | |
871 | } | |
b5b82205 | 872 | for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { |
127e670a JK |
873 | ckpt->cur_data_segno[i] = |
874 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); | |
875 | ckpt->cur_data_blkoff[i] = | |
876 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); | |
877 | ckpt->alloc_type[i + CURSEG_HOT_DATA] = | |
878 | curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); | |
879 | } | |
880 | ||
881 | ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); | |
882 | ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); | |
883 | ckpt->next_free_nid = cpu_to_le32(last_nid); | |
884 | ||
885 | /* 2 cp + n data seg summary + orphan inode blocks */ | |
886 | data_sum_blocks = npages_for_summary_flush(sbi); | |
b5b82205 | 887 | if (data_sum_blocks < NR_CURSEG_DATA_TYPE) |
25ca923b | 888 | set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 889 | else |
25ca923b | 890 | clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 891 | |
b5b82205 | 892 | orphan_blocks = GET_ORPHAN_BLOCKS(sbi->n_orphans); |
1dbe4152 CL |
893 | ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
894 | orphan_blocks); | |
127e670a | 895 | |
75ab4cb8 | 896 | if (cpc->reason == CP_UMOUNT) { |
25ca923b | 897 | set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
b5b82205 | 898 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+ |
1dbe4152 CL |
899 | cp_payload_blks + data_sum_blocks + |
900 | orphan_blocks + NR_CURSEG_NODE_TYPE); | |
127e670a | 901 | } else { |
25ca923b | 902 | clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
b5b82205 | 903 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + |
1dbe4152 CL |
904 | cp_payload_blks + data_sum_blocks + |
905 | orphan_blocks); | |
127e670a JK |
906 | } |
907 | ||
908 | if (sbi->n_orphans) | |
25ca923b | 909 | set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 910 | else |
25ca923b | 911 | clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 912 | |
2ae4c673 JK |
913 | if (sbi->need_fsck) |
914 | set_ckpt_flags(ckpt, CP_FSCK_FLAG); | |
915 | ||
127e670a JK |
916 | /* update SIT/NAT bitmap */ |
917 | get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); | |
918 | get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); | |
919 | ||
920 | crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset)); | |
7e586fa0 JK |
921 | *((__le32 *)((unsigned char *)ckpt + |
922 | le32_to_cpu(ckpt->checksum_offset))) | |
127e670a JK |
923 | = cpu_to_le32(crc32); |
924 | ||
925 | start_blk = __start_cp_addr(sbi); | |
926 | ||
927 | /* write out checkpoint buffer at block 0 */ | |
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 | ||
1dbe4152 CL |
934 | for (i = 1; i < 1 + cp_payload_blks; i++) { |
935 | cp_page = grab_meta_page(sbi, start_blk++); | |
936 | kaddr = page_address(cp_page); | |
937 | memcpy(kaddr, (char *)ckpt + i * F2FS_BLKSIZE, | |
938 | (1 << sbi->log_blocksize)); | |
939 | set_page_dirty(cp_page); | |
940 | f2fs_put_page(cp_page, 1); | |
941 | } | |
942 | ||
127e670a JK |
943 | if (sbi->n_orphans) { |
944 | write_orphan_inodes(sbi, start_blk); | |
945 | start_blk += orphan_blocks; | |
946 | } | |
947 | ||
948 | write_data_summaries(sbi, start_blk); | |
949 | start_blk += data_sum_blocks; | |
75ab4cb8 | 950 | if (cpc->reason == CP_UMOUNT) { |
127e670a JK |
951 | write_node_summaries(sbi, start_blk); |
952 | start_blk += NR_CURSEG_NODE_TYPE; | |
953 | } | |
954 | ||
955 | /* writeout checkpoint block */ | |
956 | cp_page = grab_meta_page(sbi, start_blk); | |
957 | kaddr = page_address(cp_page); | |
958 | memcpy(kaddr, ckpt, (1 << sbi->log_blocksize)); | |
959 | set_page_dirty(cp_page); | |
960 | f2fs_put_page(cp_page, 1); | |
961 | ||
962 | /* wait for previous submitted node/meta pages writeback */ | |
fb51b5ef | 963 | wait_on_all_pages_writeback(sbi); |
127e670a | 964 | |
cf779cab JK |
965 | if (unlikely(f2fs_cp_error(sbi))) |
966 | return; | |
967 | ||
4ef51a8f | 968 | filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX); |
9df27d98 | 969 | filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX); |
127e670a JK |
970 | |
971 | /* update user_block_counts */ | |
972 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
973 | sbi->alloc_valid_block_count = 0; | |
974 | ||
975 | /* Here, we only have one bio having CP pack */ | |
577e3495 | 976 | sync_meta_pages(sbi, META_FLUSH, LONG_MAX); |
127e670a | 977 | |
cf779cab JK |
978 | release_dirty_inode(sbi); |
979 | ||
980 | if (unlikely(f2fs_cp_error(sbi))) | |
981 | return; | |
982 | ||
983 | clear_prefree_segments(sbi); | |
984 | F2FS_RESET_SB_DIRT(sbi); | |
127e670a JK |
985 | } |
986 | ||
0a8165d7 | 987 | /* |
e1c42045 | 988 | * We guarantee that this checkpoint procedure will not fail. |
127e670a | 989 | */ |
75ab4cb8 | 990 | void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
991 | { |
992 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
993 | unsigned long long ckpt_ver; | |
994 | ||
75ab4cb8 | 995 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops"); |
2af4bd6c | 996 | |
43727527 | 997 | mutex_lock(&sbi->cp_mutex); |
8501017e | 998 | |
4b2fecc8 | 999 | if (!sbi->s_dirty && cpc->reason != CP_DISCARD) |
8501017e | 1000 | goto out; |
cf779cab JK |
1001 | if (unlikely(f2fs_cp_error(sbi))) |
1002 | goto out; | |
1003 | if (block_operations(sbi)) | |
1004 | goto out; | |
127e670a | 1005 | |
75ab4cb8 | 1006 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops"); |
2af4bd6c | 1007 | |
458e6197 JK |
1008 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
1009 | f2fs_submit_merged_bio(sbi, NODE, WRITE); | |
1010 | f2fs_submit_merged_bio(sbi, META, WRITE); | |
127e670a JK |
1011 | |
1012 | /* | |
1013 | * update checkpoint pack index | |
1014 | * Increase the version number so that | |
1015 | * SIT entries and seg summaries are written at correct place | |
1016 | */ | |
d71b5564 | 1017 | ckpt_ver = cur_cp_version(ckpt); |
127e670a JK |
1018 | ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
1019 | ||
1020 | /* write cached NAT/SIT entries to NAT/SIT area */ | |
1021 | flush_nat_entries(sbi); | |
4b2fecc8 | 1022 | flush_sit_entries(sbi, cpc); |
127e670a | 1023 | |
127e670a | 1024 | /* unlock all the fs_lock[] in do_checkpoint() */ |
75ab4cb8 | 1025 | do_checkpoint(sbi, cpc); |
127e670a JK |
1026 | |
1027 | unblock_operations(sbi); | |
942e0be6 | 1028 | stat_inc_cp_count(sbi->stat_info); |
8501017e JK |
1029 | out: |
1030 | mutex_unlock(&sbi->cp_mutex); | |
75ab4cb8 | 1031 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint"); |
127e670a JK |
1032 | } |
1033 | ||
6451e041 | 1034 | void init_ino_entry_info(struct f2fs_sb_info *sbi) |
127e670a | 1035 | { |
6451e041 JK |
1036 | int i; |
1037 | ||
1038 | for (i = 0; i < MAX_INO_ENTRY; i++) { | |
39efac41 | 1039 | INIT_RADIX_TREE(&sbi->ino_root[i], GFP_ATOMIC); |
6451e041 JK |
1040 | spin_lock_init(&sbi->ino_lock[i]); |
1041 | INIT_LIST_HEAD(&sbi->ino_list[i]); | |
1042 | } | |
1043 | ||
0d47c1ad GZ |
1044 | /* |
1045 | * considering 512 blocks in a segment 8 blocks are needed for cp | |
1046 | * and log segment summaries. Remaining blocks are used to keep | |
1047 | * orphan entries with the limitation one reserved segment | |
1048 | * for cp pack we can have max 1020*504 orphan entries | |
1049 | */ | |
6451e041 | 1050 | sbi->n_orphans = 0; |
b5b82205 CY |
1051 | sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS - |
1052 | NR_CURSEG_TYPE) * F2FS_ORPHANS_PER_BLOCK; | |
127e670a JK |
1053 | } |
1054 | ||
6e6093a8 | 1055 | int __init create_checkpoint_caches(void) |
127e670a | 1056 | { |
6451e041 JK |
1057 | ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
1058 | sizeof(struct ino_entry)); | |
1059 | if (!ino_entry_slab) | |
127e670a JK |
1060 | return -ENOMEM; |
1061 | inode_entry_slab = f2fs_kmem_cache_create("f2fs_dirty_dir_entry", | |
e8512d2e | 1062 | sizeof(struct dir_inode_entry)); |
6bacf52f | 1063 | if (!inode_entry_slab) { |
6451e041 | 1064 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1065 | return -ENOMEM; |
1066 | } | |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | void destroy_checkpoint_caches(void) | |
1071 | { | |
6451e041 | 1072 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1073 | kmem_cache_destroy(inode_entry_slab); |
1074 | } |