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" | |
9e4ded3f | 23 | #include "trace.h" |
2af4bd6c | 24 | #include <trace/events/f2fs.h> |
127e670a | 25 | |
6451e041 | 26 | static struct kmem_cache *ino_entry_slab; |
127e670a JK |
27 | static struct kmem_cache *inode_entry_slab; |
28 | ||
0a8165d7 | 29 | /* |
127e670a JK |
30 | * We guarantee no failure on the returned page. |
31 | */ | |
32 | struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) | |
33 | { | |
9df27d98 | 34 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a JK |
35 | struct page *page = NULL; |
36 | repeat: | |
bde44686 | 37 | page = grab_cache_page(mapping, index); |
127e670a JK |
38 | if (!page) { |
39 | cond_resched(); | |
40 | goto repeat; | |
41 | } | |
bde44686 | 42 | f2fs_wait_on_page_writeback(page, META); |
127e670a JK |
43 | SetPageUptodate(page); |
44 | return page; | |
45 | } | |
46 | ||
0a8165d7 | 47 | /* |
127e670a JK |
48 | * We guarantee no failure on the returned page. |
49 | */ | |
50 | struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) | |
51 | { | |
9df27d98 | 52 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a | 53 | struct page *page; |
cf04e8eb JK |
54 | struct f2fs_io_info fio = { |
55 | .type = META, | |
56 | .rw = READ_SYNC | REQ_META | REQ_PRIO, | |
57 | .blk_addr = index, | |
58 | }; | |
127e670a JK |
59 | repeat: |
60 | page = grab_cache_page(mapping, index); | |
61 | if (!page) { | |
62 | cond_resched(); | |
63 | goto repeat; | |
64 | } | |
393ff91f JK |
65 | if (PageUptodate(page)) |
66 | goto out; | |
67 | ||
cf04e8eb | 68 | if (f2fs_submit_page_bio(sbi, page, &fio)) |
127e670a | 69 | goto repeat; |
127e670a | 70 | |
393ff91f | 71 | lock_page(page); |
6bacf52f | 72 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
73 | f2fs_put_page(page, 1); |
74 | goto repeat; | |
75 | } | |
393ff91f | 76 | out: |
127e670a JK |
77 | return page; |
78 | } | |
79 | ||
66b00c18 CY |
80 | static inline bool is_valid_blkaddr(struct f2fs_sb_info *sbi, |
81 | block_t blkaddr, int type) | |
662befda CY |
82 | { |
83 | switch (type) { | |
84 | case META_NAT: | |
66b00c18 | 85 | break; |
662befda | 86 | case META_SIT: |
66b00c18 CY |
87 | if (unlikely(blkaddr >= SIT_BLK_CNT(sbi))) |
88 | return false; | |
89 | break; | |
81c1a0f1 | 90 | case META_SSA: |
66b00c18 CY |
91 | if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) || |
92 | blkaddr < SM_I(sbi)->ssa_blkaddr)) | |
93 | return false; | |
94 | break; | |
662befda | 95 | case META_CP: |
66b00c18 CY |
96 | if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr || |
97 | blkaddr < __start_cp_addr(sbi))) | |
98 | return false; | |
99 | break; | |
4c521f49 | 100 | case META_POR: |
66b00c18 CY |
101 | if (unlikely(blkaddr >= MAX_BLKADDR(sbi) || |
102 | blkaddr < MAIN_BLKADDR(sbi))) | |
103 | return false; | |
104 | break; | |
662befda CY |
105 | default: |
106 | BUG(); | |
107 | } | |
66b00c18 CY |
108 | |
109 | return true; | |
662befda CY |
110 | } |
111 | ||
112 | /* | |
81c1a0f1 | 113 | * Readahead CP/NAT/SIT/SSA pages |
662befda | 114 | */ |
4c521f49 | 115 | int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, int type) |
662befda CY |
116 | { |
117 | block_t prev_blk_addr = 0; | |
118 | struct page *page; | |
4c521f49 | 119 | block_t blkno = start; |
662befda CY |
120 | struct f2fs_io_info fio = { |
121 | .type = META, | |
122 | .rw = READ_SYNC | REQ_META | REQ_PRIO | |
123 | }; | |
124 | ||
125 | for (; nrpages-- > 0; blkno++) { | |
662befda | 126 | |
66b00c18 CY |
127 | if (!is_valid_blkaddr(sbi, blkno, type)) |
128 | goto out; | |
129 | ||
662befda CY |
130 | switch (type) { |
131 | case META_NAT: | |
66b00c18 CY |
132 | if (unlikely(blkno >= |
133 | NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid))) | |
662befda | 134 | blkno = 0; |
66b00c18 | 135 | /* get nat block addr */ |
cf04e8eb | 136 | fio.blk_addr = current_nat_addr(sbi, |
662befda CY |
137 | blkno * NAT_ENTRY_PER_BLOCK); |
138 | break; | |
139 | case META_SIT: | |
140 | /* get sit block addr */ | |
cf04e8eb | 141 | fio.blk_addr = current_sit_addr(sbi, |
662befda | 142 | blkno * SIT_ENTRY_PER_BLOCK); |
cf04e8eb | 143 | if (blkno != start && prev_blk_addr + 1 != fio.blk_addr) |
662befda | 144 | goto out; |
cf04e8eb | 145 | prev_blk_addr = fio.blk_addr; |
662befda | 146 | break; |
81c1a0f1 | 147 | case META_SSA: |
662befda | 148 | case META_CP: |
4c521f49 | 149 | case META_POR: |
cf04e8eb | 150 | fio.blk_addr = blkno; |
662befda CY |
151 | break; |
152 | default: | |
153 | BUG(); | |
154 | } | |
155 | ||
cf04e8eb | 156 | page = grab_cache_page(META_MAPPING(sbi), fio.blk_addr); |
662befda CY |
157 | if (!page) |
158 | continue; | |
159 | if (PageUptodate(page)) { | |
662befda CY |
160 | f2fs_put_page(page, 1); |
161 | continue; | |
162 | } | |
163 | ||
cf04e8eb | 164 | f2fs_submit_page_mbio(sbi, page, &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 | ||
635aee1f CY |
172 | void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index) |
173 | { | |
174 | struct page *page; | |
175 | bool readahead = false; | |
176 | ||
177 | page = find_get_page(META_MAPPING(sbi), index); | |
178 | if (!page || (page && !PageUptodate(page))) | |
179 | readahead = true; | |
180 | f2fs_put_page(page, 0); | |
181 | ||
182 | if (readahead) | |
183 | ra_meta_pages(sbi, index, MAX_BIO_BLOCKS(sbi), META_POR); | |
184 | } | |
185 | ||
127e670a JK |
186 | static int f2fs_write_meta_page(struct page *page, |
187 | struct writeback_control *wbc) | |
188 | { | |
4081363f | 189 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
127e670a | 190 | |
ecda0de3 CY |
191 | trace_f2fs_writepage(page, META); |
192 | ||
203681f6 | 193 | if (unlikely(sbi->por_doing)) |
cfb271d4 | 194 | goto redirty_out; |
857dc4e0 | 195 | if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0)) |
cfb271d4 | 196 | goto redirty_out; |
1e968fdf | 197 | if (unlikely(f2fs_cp_error(sbi))) |
cf779cab | 198 | goto redirty_out; |
127e670a | 199 | |
3cb5ad15 | 200 | f2fs_wait_on_page_writeback(page, META); |
577e3495 JK |
201 | write_meta_page(sbi, page); |
202 | dec_page_count(sbi, F2FS_DIRTY_META); | |
203 | unlock_page(page); | |
857dc4e0 JK |
204 | |
205 | if (wbc->for_reclaim) | |
206 | f2fs_submit_merged_bio(sbi, META, WRITE); | |
577e3495 | 207 | return 0; |
cfb271d4 CY |
208 | |
209 | redirty_out: | |
76f60268 | 210 | redirty_page_for_writepage(wbc, page); |
cfb271d4 | 211 | return AOP_WRITEPAGE_ACTIVATE; |
127e670a JK |
212 | } |
213 | ||
214 | static int f2fs_write_meta_pages(struct address_space *mapping, | |
215 | struct writeback_control *wbc) | |
216 | { | |
4081363f | 217 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
50c8cdb3 | 218 | long diff, written; |
127e670a | 219 | |
e5748434 CY |
220 | trace_f2fs_writepages(mapping->host, wbc, META); |
221 | ||
5459aa97 | 222 | /* collect a number of dirty meta pages and write together */ |
50c8cdb3 JK |
223 | if (wbc->for_kupdate || |
224 | get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) | |
d3baf95d | 225 | goto skip_write; |
127e670a JK |
226 | |
227 | /* if mounting is failed, skip writing node pages */ | |
228 | mutex_lock(&sbi->cp_mutex); | |
50c8cdb3 JK |
229 | diff = nr_pages_to_write(sbi, META, wbc); |
230 | written = sync_meta_pages(sbi, META, wbc->nr_to_write); | |
127e670a | 231 | mutex_unlock(&sbi->cp_mutex); |
50c8cdb3 | 232 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); |
127e670a | 233 | return 0; |
d3baf95d JK |
234 | |
235 | skip_write: | |
236 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); | |
237 | return 0; | |
127e670a JK |
238 | } |
239 | ||
240 | long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, | |
241 | long nr_to_write) | |
242 | { | |
9df27d98 | 243 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a JK |
244 | pgoff_t index = 0, end = LONG_MAX; |
245 | struct pagevec pvec; | |
246 | long nwritten = 0; | |
247 | struct writeback_control wbc = { | |
248 | .for_reclaim = 0, | |
249 | }; | |
250 | ||
251 | pagevec_init(&pvec, 0); | |
252 | ||
253 | while (index <= end) { | |
254 | int i, nr_pages; | |
255 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, | |
256 | PAGECACHE_TAG_DIRTY, | |
257 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
cfb271d4 | 258 | if (unlikely(nr_pages == 0)) |
127e670a JK |
259 | break; |
260 | ||
261 | for (i = 0; i < nr_pages; i++) { | |
262 | struct page *page = pvec.pages[i]; | |
203681f6 | 263 | |
127e670a | 264 | lock_page(page); |
203681f6 JK |
265 | |
266 | if (unlikely(page->mapping != mapping)) { | |
267 | continue_unlock: | |
268 | unlock_page(page); | |
269 | continue; | |
270 | } | |
271 | if (!PageDirty(page)) { | |
272 | /* someone wrote it for us */ | |
273 | goto continue_unlock; | |
274 | } | |
275 | ||
276 | if (!clear_page_dirty_for_io(page)) | |
277 | goto continue_unlock; | |
278 | ||
577e3495 JK |
279 | if (f2fs_write_meta_page(page, &wbc)) { |
280 | unlock_page(page); | |
281 | break; | |
282 | } | |
cfb271d4 CY |
283 | nwritten++; |
284 | if (unlikely(nwritten >= nr_to_write)) | |
127e670a JK |
285 | break; |
286 | } | |
287 | pagevec_release(&pvec); | |
288 | cond_resched(); | |
289 | } | |
290 | ||
291 | if (nwritten) | |
458e6197 | 292 | f2fs_submit_merged_bio(sbi, type, WRITE); |
127e670a JK |
293 | |
294 | return nwritten; | |
295 | } | |
296 | ||
297 | static int f2fs_set_meta_page_dirty(struct page *page) | |
298 | { | |
26c6b887 JK |
299 | trace_f2fs_set_page_dirty(page, META); |
300 | ||
127e670a JK |
301 | SetPageUptodate(page); |
302 | if (!PageDirty(page)) { | |
303 | __set_page_dirty_nobuffers(page); | |
4081363f | 304 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); |
9e4ded3f | 305 | f2fs_trace_pid(page); |
127e670a JK |
306 | return 1; |
307 | } | |
308 | return 0; | |
309 | } | |
310 | ||
311 | const struct address_space_operations f2fs_meta_aops = { | |
312 | .writepage = f2fs_write_meta_page, | |
313 | .writepages = f2fs_write_meta_pages, | |
314 | .set_page_dirty = f2fs_set_meta_page_dirty, | |
315 | }; | |
316 | ||
6451e041 | 317 | static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 318 | { |
67298804 | 319 | struct inode_management *im = &sbi->im[type]; |
39efac41 JK |
320 | struct ino_entry *e; |
321 | retry: | |
769ec6e5 JK |
322 | if (radix_tree_preload(GFP_NOFS)) { |
323 | cond_resched(); | |
324 | goto retry; | |
325 | } | |
326 | ||
67298804 | 327 | spin_lock(&im->ino_lock); |
39efac41 | 328 | |
67298804 | 329 | e = radix_tree_lookup(&im->ino_root, ino); |
39efac41 JK |
330 | if (!e) { |
331 | e = kmem_cache_alloc(ino_entry_slab, GFP_ATOMIC); | |
332 | if (!e) { | |
67298804 | 333 | spin_unlock(&im->ino_lock); |
769ec6e5 | 334 | radix_tree_preload_end(); |
39efac41 | 335 | goto retry; |
953e6cc6 | 336 | } |
67298804 CY |
337 | if (radix_tree_insert(&im->ino_root, ino, e)) { |
338 | spin_unlock(&im->ino_lock); | |
39efac41 | 339 | kmem_cache_free(ino_entry_slab, e); |
769ec6e5 | 340 | radix_tree_preload_end(); |
39efac41 JK |
341 | goto retry; |
342 | } | |
343 | memset(e, 0, sizeof(struct ino_entry)); | |
344 | e->ino = ino; | |
953e6cc6 | 345 | |
67298804 | 346 | list_add_tail(&e->list, &im->ino_list); |
8c402946 | 347 | if (type != ORPHAN_INO) |
67298804 | 348 | im->ino_num++; |
39efac41 | 349 | } |
67298804 | 350 | spin_unlock(&im->ino_lock); |
769ec6e5 | 351 | radix_tree_preload_end(); |
953e6cc6 JK |
352 | } |
353 | ||
6451e041 | 354 | static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 355 | { |
67298804 | 356 | struct inode_management *im = &sbi->im[type]; |
6451e041 | 357 | struct ino_entry *e; |
953e6cc6 | 358 | |
67298804 CY |
359 | spin_lock(&im->ino_lock); |
360 | e = radix_tree_lookup(&im->ino_root, ino); | |
39efac41 JK |
361 | if (e) { |
362 | list_del(&e->list); | |
67298804 CY |
363 | radix_tree_delete(&im->ino_root, ino); |
364 | im->ino_num--; | |
365 | spin_unlock(&im->ino_lock); | |
39efac41 JK |
366 | kmem_cache_free(ino_entry_slab, e); |
367 | return; | |
953e6cc6 | 368 | } |
67298804 | 369 | spin_unlock(&im->ino_lock); |
953e6cc6 JK |
370 | } |
371 | ||
fff04f90 JK |
372 | void add_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) |
373 | { | |
374 | /* add new dirty ino entry into list */ | |
375 | __add_ino_entry(sbi, ino, type); | |
376 | } | |
377 | ||
378 | void remove_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type) | |
379 | { | |
380 | /* remove dirty ino entry from list */ | |
381 | __remove_ino_entry(sbi, ino, type); | |
382 | } | |
383 | ||
384 | /* mode should be APPEND_INO or UPDATE_INO */ | |
385 | bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) | |
386 | { | |
67298804 | 387 | struct inode_management *im = &sbi->im[mode]; |
fff04f90 | 388 | struct ino_entry *e; |
67298804 CY |
389 | |
390 | spin_lock(&im->ino_lock); | |
391 | e = radix_tree_lookup(&im->ino_root, ino); | |
392 | spin_unlock(&im->ino_lock); | |
fff04f90 JK |
393 | return e ? true : false; |
394 | } | |
395 | ||
6f12ac25 | 396 | void release_dirty_inode(struct f2fs_sb_info *sbi) |
fff04f90 JK |
397 | { |
398 | struct ino_entry *e, *tmp; | |
399 | int i; | |
400 | ||
401 | for (i = APPEND_INO; i <= UPDATE_INO; i++) { | |
67298804 CY |
402 | struct inode_management *im = &sbi->im[i]; |
403 | ||
404 | spin_lock(&im->ino_lock); | |
405 | list_for_each_entry_safe(e, tmp, &im->ino_list, list) { | |
fff04f90 | 406 | list_del(&e->list); |
67298804 | 407 | radix_tree_delete(&im->ino_root, e->ino); |
fff04f90 | 408 | kmem_cache_free(ino_entry_slab, e); |
67298804 | 409 | im->ino_num--; |
fff04f90 | 410 | } |
67298804 | 411 | spin_unlock(&im->ino_lock); |
fff04f90 JK |
412 | } |
413 | } | |
414 | ||
cbd56e7d | 415 | int acquire_orphan_inode(struct f2fs_sb_info *sbi) |
127e670a | 416 | { |
67298804 | 417 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
127e670a JK |
418 | int err = 0; |
419 | ||
67298804 CY |
420 | spin_lock(&im->ino_lock); |
421 | if (unlikely(im->ino_num >= sbi->max_orphans)) | |
127e670a | 422 | err = -ENOSPC; |
cbd56e7d | 423 | else |
67298804 CY |
424 | im->ino_num++; |
425 | spin_unlock(&im->ino_lock); | |
0d47c1ad | 426 | |
127e670a JK |
427 | return err; |
428 | } | |
429 | ||
cbd56e7d JK |
430 | void release_orphan_inode(struct f2fs_sb_info *sbi) |
431 | { | |
67298804 CY |
432 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
433 | ||
434 | spin_lock(&im->ino_lock); | |
435 | f2fs_bug_on(sbi, im->ino_num == 0); | |
436 | im->ino_num--; | |
437 | spin_unlock(&im->ino_lock); | |
cbd56e7d JK |
438 | } |
439 | ||
127e670a JK |
440 | void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
441 | { | |
39efac41 | 442 | /* add new orphan ino entry into list */ |
6451e041 | 443 | __add_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
444 | } |
445 | ||
446 | void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
447 | { | |
953e6cc6 | 448 | /* remove orphan entry from orphan list */ |
6451e041 | 449 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
450 | } |
451 | ||
452 | static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) | |
453 | { | |
454 | struct inode *inode = f2fs_iget(sbi->sb, ino); | |
9850cf4a | 455 | f2fs_bug_on(sbi, IS_ERR(inode)); |
127e670a JK |
456 | clear_nlink(inode); |
457 | ||
458 | /* truncate all the data during iput */ | |
459 | iput(inode); | |
460 | } | |
461 | ||
8f99a946 | 462 | void recover_orphan_inodes(struct f2fs_sb_info *sbi) |
127e670a JK |
463 | { |
464 | block_t start_blk, orphan_blkaddr, i, j; | |
465 | ||
25ca923b | 466 | if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG)) |
8f99a946 | 467 | return; |
127e670a | 468 | |
aabe5136 | 469 | sbi->por_doing = true; |
1dbe4152 CL |
470 | |
471 | start_blk = __start_cp_addr(sbi) + 1 + | |
472 | le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); | |
127e670a JK |
473 | orphan_blkaddr = __start_sum_addr(sbi) - 1; |
474 | ||
662befda CY |
475 | ra_meta_pages(sbi, start_blk, orphan_blkaddr, META_CP); |
476 | ||
127e670a JK |
477 | for (i = 0; i < orphan_blkaddr; i++) { |
478 | struct page *page = get_meta_page(sbi, start_blk + i); | |
479 | struct f2fs_orphan_block *orphan_blk; | |
480 | ||
481 | orphan_blk = (struct f2fs_orphan_block *)page_address(page); | |
482 | for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { | |
483 | nid_t ino = le32_to_cpu(orphan_blk->ino[j]); | |
484 | recover_orphan_inode(sbi, ino); | |
485 | } | |
486 | f2fs_put_page(page, 1); | |
487 | } | |
488 | /* clear Orphan Flag */ | |
25ca923b | 489 | clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG); |
aabe5136 | 490 | sbi->por_doing = false; |
8f99a946 | 491 | return; |
127e670a JK |
492 | } |
493 | ||
494 | static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) | |
495 | { | |
502c6e0b | 496 | struct list_head *head; |
127e670a | 497 | struct f2fs_orphan_block *orphan_blk = NULL; |
127e670a | 498 | unsigned int nentries = 0; |
4531929e | 499 | unsigned short index; |
8c402946 | 500 | unsigned short orphan_blocks; |
4531929e | 501 | struct page *page = NULL; |
6451e041 | 502 | struct ino_entry *orphan = NULL; |
67298804 | 503 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
127e670a | 504 | |
67298804 | 505 | orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num); |
8c402946 | 506 | |
4531929e | 507 | for (index = 0; index < orphan_blocks; index++) |
63f5384c | 508 | grab_meta_page(sbi, start_blk + index); |
127e670a | 509 | |
4531929e | 510 | index = 1; |
67298804 CY |
511 | spin_lock(&im->ino_lock); |
512 | head = &im->ino_list; | |
127e670a JK |
513 | |
514 | /* loop for each orphan inode entry and write them in Jornal block */ | |
502c6e0b GZ |
515 | list_for_each_entry(orphan, head, list) { |
516 | if (!page) { | |
63f5384c | 517 | page = find_get_page(META_MAPPING(sbi), start_blk++); |
9850cf4a | 518 | f2fs_bug_on(sbi, !page); |
502c6e0b GZ |
519 | orphan_blk = |
520 | (struct f2fs_orphan_block *)page_address(page); | |
521 | memset(orphan_blk, 0, sizeof(*orphan_blk)); | |
63f5384c | 522 | f2fs_put_page(page, 0); |
502c6e0b | 523 | } |
127e670a | 524 | |
36795567 | 525 | orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
127e670a | 526 | |
36795567 | 527 | if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
127e670a JK |
528 | /* |
529 | * an orphan block is full of 1020 entries, | |
530 | * then we need to flush current orphan blocks | |
531 | * and bring another one in memory | |
532 | */ | |
533 | orphan_blk->blk_addr = cpu_to_le16(index); | |
534 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
535 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
536 | set_page_dirty(page); | |
537 | f2fs_put_page(page, 1); | |
538 | index++; | |
127e670a JK |
539 | nentries = 0; |
540 | page = NULL; | |
541 | } | |
502c6e0b | 542 | } |
127e670a | 543 | |
502c6e0b GZ |
544 | if (page) { |
545 | orphan_blk->blk_addr = cpu_to_le16(index); | |
546 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
547 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
548 | set_page_dirty(page); | |
549 | f2fs_put_page(page, 1); | |
127e670a | 550 | } |
502c6e0b | 551 | |
67298804 | 552 | spin_unlock(&im->ino_lock); |
127e670a JK |
553 | } |
554 | ||
555 | static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, | |
556 | block_t cp_addr, unsigned long long *version) | |
557 | { | |
558 | struct page *cp_page_1, *cp_page_2 = NULL; | |
559 | unsigned long blk_size = sbi->blocksize; | |
560 | struct f2fs_checkpoint *cp_block; | |
561 | unsigned long long cur_version = 0, pre_version = 0; | |
127e670a | 562 | size_t crc_offset; |
7e586fa0 | 563 | __u32 crc = 0; |
127e670a JK |
564 | |
565 | /* Read the 1st cp block in this CP pack */ | |
566 | cp_page_1 = get_meta_page(sbi, cp_addr); | |
567 | ||
568 | /* get the version number */ | |
569 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_1); | |
570 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
571 | if (crc_offset >= blk_size) | |
572 | goto invalid_cp1; | |
573 | ||
7e586fa0 | 574 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
575 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
576 | goto invalid_cp1; | |
577 | ||
d71b5564 | 578 | pre_version = cur_cp_version(cp_block); |
127e670a JK |
579 | |
580 | /* Read the 2nd cp block in this CP pack */ | |
25ca923b | 581 | cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1; |
127e670a JK |
582 | cp_page_2 = get_meta_page(sbi, cp_addr); |
583 | ||
584 | cp_block = (struct f2fs_checkpoint *)page_address(cp_page_2); | |
585 | crc_offset = le32_to_cpu(cp_block->checksum_offset); | |
586 | if (crc_offset >= blk_size) | |
587 | goto invalid_cp2; | |
588 | ||
7e586fa0 | 589 | crc = le32_to_cpu(*((__u32 *)((unsigned char *)cp_block + crc_offset))); |
127e670a JK |
590 | if (!f2fs_crc_valid(crc, cp_block, crc_offset)) |
591 | goto invalid_cp2; | |
592 | ||
d71b5564 | 593 | cur_version = cur_cp_version(cp_block); |
127e670a JK |
594 | |
595 | if (cur_version == pre_version) { | |
596 | *version = cur_version; | |
597 | f2fs_put_page(cp_page_2, 1); | |
598 | return cp_page_1; | |
599 | } | |
600 | invalid_cp2: | |
601 | f2fs_put_page(cp_page_2, 1); | |
602 | invalid_cp1: | |
603 | f2fs_put_page(cp_page_1, 1); | |
604 | return NULL; | |
605 | } | |
606 | ||
607 | int get_valid_checkpoint(struct f2fs_sb_info *sbi) | |
608 | { | |
609 | struct f2fs_checkpoint *cp_block; | |
610 | struct f2fs_super_block *fsb = sbi->raw_super; | |
611 | struct page *cp1, *cp2, *cur_page; | |
612 | unsigned long blk_size = sbi->blocksize; | |
613 | unsigned long long cp1_version = 0, cp2_version = 0; | |
614 | unsigned long long cp_start_blk_no; | |
1dbe4152 CL |
615 | unsigned int cp_blks = 1 + le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
616 | block_t cp_blk_no; | |
617 | int i; | |
127e670a | 618 | |
1dbe4152 | 619 | sbi->ckpt = kzalloc(cp_blks * blk_size, GFP_KERNEL); |
127e670a JK |
620 | if (!sbi->ckpt) |
621 | return -ENOMEM; | |
622 | /* | |
623 | * Finding out valid cp block involves read both | |
624 | * sets( cp pack1 and cp pack 2) | |
625 | */ | |
626 | cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
627 | cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); | |
628 | ||
629 | /* The second checkpoint pack should start at the next segment */ | |
f9a4e6df JK |
630 | cp_start_blk_no += ((unsigned long long)1) << |
631 | le32_to_cpu(fsb->log_blocks_per_seg); | |
127e670a JK |
632 | cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
633 | ||
634 | if (cp1 && cp2) { | |
635 | if (ver_after(cp2_version, cp1_version)) | |
636 | cur_page = cp2; | |
637 | else | |
638 | cur_page = cp1; | |
639 | } else if (cp1) { | |
640 | cur_page = cp1; | |
641 | } else if (cp2) { | |
642 | cur_page = cp2; | |
643 | } else { | |
644 | goto fail_no_cp; | |
645 | } | |
646 | ||
647 | cp_block = (struct f2fs_checkpoint *)page_address(cur_page); | |
648 | memcpy(sbi->ckpt, cp_block, blk_size); | |
649 | ||
1dbe4152 CL |
650 | if (cp_blks <= 1) |
651 | goto done; | |
652 | ||
653 | cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
654 | if (cur_page == cp2) | |
655 | cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); | |
656 | ||
657 | for (i = 1; i < cp_blks; i++) { | |
658 | void *sit_bitmap_ptr; | |
659 | unsigned char *ckpt = (unsigned char *)sbi->ckpt; | |
660 | ||
661 | cur_page = get_meta_page(sbi, cp_blk_no + i); | |
662 | sit_bitmap_ptr = page_address(cur_page); | |
663 | memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); | |
664 | f2fs_put_page(cur_page, 1); | |
665 | } | |
666 | done: | |
127e670a JK |
667 | f2fs_put_page(cp1, 1); |
668 | f2fs_put_page(cp2, 1); | |
669 | return 0; | |
670 | ||
671 | fail_no_cp: | |
672 | kfree(sbi->ckpt); | |
673 | return -EINVAL; | |
674 | } | |
675 | ||
5deb8267 | 676 | static int __add_dirty_inode(struct inode *inode, struct dir_inode_entry *new) |
127e670a | 677 | { |
4081363f | 678 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
127e670a | 679 | |
ed57c27f JK |
680 | if (is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) |
681 | return -EEXIST; | |
2d7b822a | 682 | |
ed57c27f JK |
683 | set_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); |
684 | F2FS_I(inode)->dirty_dir = new; | |
685 | list_add_tail(&new->list, &sbi->dir_inode_list); | |
dcdfff65 | 686 | stat_inc_dirty_dir(sbi); |
5deb8267 JK |
687 | return 0; |
688 | } | |
689 | ||
a7ffdbe2 | 690 | void update_dirty_page(struct inode *inode, struct page *page) |
5deb8267 | 691 | { |
4081363f | 692 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
5deb8267 | 693 | struct dir_inode_entry *new; |
cf0ee0f0 | 694 | int ret = 0; |
5deb8267 | 695 | |
a7ffdbe2 | 696 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)) |
127e670a | 697 | return; |
7bd59381 | 698 | |
a7ffdbe2 JK |
699 | if (!S_ISDIR(inode->i_mode)) { |
700 | inode_inc_dirty_pages(inode); | |
701 | goto out; | |
702 | } | |
703 | ||
7bd59381 | 704 | new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); |
127e670a JK |
705 | new->inode = inode; |
706 | INIT_LIST_HEAD(&new->list); | |
707 | ||
708 | spin_lock(&sbi->dir_inode_lock); | |
cf0ee0f0 | 709 | ret = __add_dirty_inode(inode, new); |
a7ffdbe2 | 710 | inode_inc_dirty_pages(inode); |
5deb8267 | 711 | spin_unlock(&sbi->dir_inode_lock); |
cf0ee0f0 CY |
712 | |
713 | if (ret) | |
714 | kmem_cache_free(inode_entry_slab, new); | |
a7ffdbe2 JK |
715 | out: |
716 | SetPagePrivate(page); | |
9e4ded3f | 717 | f2fs_trace_pid(page); |
5deb8267 JK |
718 | } |
719 | ||
720 | void add_dirty_dir_inode(struct inode *inode) | |
721 | { | |
4081363f | 722 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
7bd59381 GZ |
723 | struct dir_inode_entry *new = |
724 | f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); | |
cf0ee0f0 | 725 | int ret = 0; |
7bd59381 | 726 | |
5deb8267 JK |
727 | new->inode = inode; |
728 | INIT_LIST_HEAD(&new->list); | |
127e670a | 729 | |
5deb8267 | 730 | spin_lock(&sbi->dir_inode_lock); |
cf0ee0f0 | 731 | ret = __add_dirty_inode(inode, new); |
127e670a | 732 | spin_unlock(&sbi->dir_inode_lock); |
cf0ee0f0 CY |
733 | |
734 | if (ret) | |
735 | kmem_cache_free(inode_entry_slab, new); | |
127e670a JK |
736 | } |
737 | ||
738 | void remove_dirty_dir_inode(struct inode *inode) | |
739 | { | |
4081363f | 740 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2d7b822a | 741 | struct dir_inode_entry *entry; |
127e670a JK |
742 | |
743 | if (!S_ISDIR(inode->i_mode)) | |
744 | return; | |
745 | ||
746 | spin_lock(&sbi->dir_inode_lock); | |
a7ffdbe2 | 747 | if (get_dirty_pages(inode) || |
ed57c27f | 748 | !is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) { |
3b10b1fd JK |
749 | spin_unlock(&sbi->dir_inode_lock); |
750 | return; | |
751 | } | |
127e670a | 752 | |
ed57c27f JK |
753 | entry = F2FS_I(inode)->dirty_dir; |
754 | list_del(&entry->list); | |
755 | F2FS_I(inode)->dirty_dir = NULL; | |
756 | clear_inode_flag(F2FS_I(inode), FI_DIRTY_DIR); | |
757 | stat_dec_dirty_dir(sbi); | |
127e670a | 758 | spin_unlock(&sbi->dir_inode_lock); |
ed57c27f | 759 | kmem_cache_free(inode_entry_slab, entry); |
74d0b917 JK |
760 | |
761 | /* Only from the recovery routine */ | |
afc3eda2 JK |
762 | if (is_inode_flag_set(F2FS_I(inode), FI_DELAY_IPUT)) { |
763 | clear_inode_flag(F2FS_I(inode), FI_DELAY_IPUT); | |
74d0b917 | 764 | iput(inode); |
afc3eda2 | 765 | } |
74d0b917 JK |
766 | } |
767 | ||
127e670a JK |
768 | void sync_dirty_dir_inodes(struct f2fs_sb_info *sbi) |
769 | { | |
ce3b7d80 | 770 | struct list_head *head; |
127e670a JK |
771 | struct dir_inode_entry *entry; |
772 | struct inode *inode; | |
773 | retry: | |
af41d3ee JK |
774 | if (unlikely(f2fs_cp_error(sbi))) |
775 | return; | |
776 | ||
127e670a | 777 | spin_lock(&sbi->dir_inode_lock); |
ce3b7d80 GZ |
778 | |
779 | head = &sbi->dir_inode_list; | |
127e670a JK |
780 | if (list_empty(head)) { |
781 | spin_unlock(&sbi->dir_inode_lock); | |
782 | return; | |
783 | } | |
784 | entry = list_entry(head->next, struct dir_inode_entry, list); | |
785 | inode = igrab(entry->inode); | |
786 | spin_unlock(&sbi->dir_inode_lock); | |
787 | if (inode) { | |
87d6f890 | 788 | filemap_fdatawrite(inode->i_mapping); |
127e670a JK |
789 | iput(inode); |
790 | } else { | |
791 | /* | |
792 | * We should submit bio, since it exists several | |
793 | * wribacking dentry pages in the freeing inode. | |
794 | */ | |
458e6197 | 795 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
127e670a JK |
796 | } |
797 | goto retry; | |
798 | } | |
799 | ||
0a8165d7 | 800 | /* |
127e670a JK |
801 | * Freeze all the FS-operations for checkpoint. |
802 | */ | |
cf779cab | 803 | static int block_operations(struct f2fs_sb_info *sbi) |
127e670a | 804 | { |
127e670a JK |
805 | struct writeback_control wbc = { |
806 | .sync_mode = WB_SYNC_ALL, | |
807 | .nr_to_write = LONG_MAX, | |
808 | .for_reclaim = 0, | |
809 | }; | |
c718379b | 810 | struct blk_plug plug; |
cf779cab | 811 | int err = 0; |
c718379b JK |
812 | |
813 | blk_start_plug(&plug); | |
814 | ||
39936837 | 815 | retry_flush_dents: |
e479556b | 816 | f2fs_lock_all(sbi); |
127e670a | 817 | /* write all the dirty dentry pages */ |
127e670a | 818 | if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
e479556b | 819 | f2fs_unlock_all(sbi); |
39936837 | 820 | sync_dirty_dir_inodes(sbi); |
cf779cab JK |
821 | if (unlikely(f2fs_cp_error(sbi))) { |
822 | err = -EIO; | |
823 | goto out; | |
824 | } | |
39936837 | 825 | goto retry_flush_dents; |
127e670a JK |
826 | } |
827 | ||
127e670a | 828 | /* |
e1c42045 | 829 | * POR: we should ensure that there are no dirty node pages |
127e670a JK |
830 | * until finishing nat/sit flush. |
831 | */ | |
39936837 | 832 | retry_flush_nodes: |
b3582c68 | 833 | down_write(&sbi->node_write); |
127e670a JK |
834 | |
835 | if (get_pages(sbi, F2FS_DIRTY_NODES)) { | |
b3582c68 | 836 | up_write(&sbi->node_write); |
39936837 | 837 | sync_node_pages(sbi, 0, &wbc); |
cf779cab JK |
838 | if (unlikely(f2fs_cp_error(sbi))) { |
839 | f2fs_unlock_all(sbi); | |
840 | err = -EIO; | |
841 | goto out; | |
842 | } | |
39936837 | 843 | goto retry_flush_nodes; |
127e670a | 844 | } |
cf779cab | 845 | out: |
c718379b | 846 | blk_finish_plug(&plug); |
cf779cab | 847 | return err; |
127e670a JK |
848 | } |
849 | ||
850 | static void unblock_operations(struct f2fs_sb_info *sbi) | |
851 | { | |
b3582c68 | 852 | up_write(&sbi->node_write); |
e479556b | 853 | f2fs_unlock_all(sbi); |
127e670a JK |
854 | } |
855 | ||
fb51b5ef CL |
856 | static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) |
857 | { | |
858 | DEFINE_WAIT(wait); | |
859 | ||
860 | for (;;) { | |
861 | prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); | |
862 | ||
863 | if (!get_pages(sbi, F2FS_WRITEBACK)) | |
864 | break; | |
865 | ||
866 | io_schedule(); | |
867 | } | |
868 | finish_wait(&sbi->cp_wait, &wait); | |
869 | } | |
870 | ||
75ab4cb8 | 871 | static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
872 | { |
873 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
cf2271e7 | 874 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
77041823 | 875 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
67298804 | 876 | unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num; |
77041823 | 877 | nid_t last_nid = nm_i->next_scan_nid; |
127e670a JK |
878 | block_t start_blk; |
879 | struct page *cp_page; | |
880 | unsigned int data_sum_blocks, orphan_blocks; | |
7e586fa0 | 881 | __u32 crc32 = 0; |
127e670a | 882 | void *kaddr; |
127e670a | 883 | int i; |
1dbe4152 | 884 | int cp_payload_blks = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
127e670a | 885 | |
1e87a78d JK |
886 | /* |
887 | * This avoids to conduct wrong roll-forward operations and uses | |
888 | * metapages, so should be called prior to sync_meta_pages below. | |
889 | */ | |
cf2271e7 | 890 | discard_next_dnode(sbi, NEXT_FREE_BLKADDR(sbi, curseg)); |
127e670a JK |
891 | |
892 | /* Flush all the NAT/SIT pages */ | |
cf779cab | 893 | while (get_pages(sbi, F2FS_DIRTY_META)) { |
127e670a | 894 | sync_meta_pages(sbi, META, LONG_MAX); |
cf779cab JK |
895 | if (unlikely(f2fs_cp_error(sbi))) |
896 | return; | |
897 | } | |
127e670a JK |
898 | |
899 | next_free_nid(sbi, &last_nid); | |
900 | ||
901 | /* | |
902 | * modify checkpoint | |
903 | * version number is already updated | |
904 | */ | |
905 | ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi)); | |
906 | ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); | |
907 | ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); | |
b5b82205 | 908 | for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { |
127e670a JK |
909 | ckpt->cur_node_segno[i] = |
910 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); | |
911 | ckpt->cur_node_blkoff[i] = | |
912 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); | |
913 | ckpt->alloc_type[i + CURSEG_HOT_NODE] = | |
914 | curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); | |
915 | } | |
b5b82205 | 916 | for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { |
127e670a JK |
917 | ckpt->cur_data_segno[i] = |
918 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); | |
919 | ckpt->cur_data_blkoff[i] = | |
920 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); | |
921 | ckpt->alloc_type[i + CURSEG_HOT_DATA] = | |
922 | curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); | |
923 | } | |
924 | ||
925 | ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); | |
926 | ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); | |
927 | ckpt->next_free_nid = cpu_to_le32(last_nid); | |
928 | ||
929 | /* 2 cp + n data seg summary + orphan inode blocks */ | |
3fa06d7b | 930 | data_sum_blocks = npages_for_summary_flush(sbi, false); |
b5b82205 | 931 | if (data_sum_blocks < NR_CURSEG_DATA_TYPE) |
25ca923b | 932 | set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 933 | else |
25ca923b | 934 | clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 935 | |
67298804 | 936 | orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num); |
1dbe4152 CL |
937 | ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
938 | orphan_blocks); | |
127e670a | 939 | |
75ab4cb8 | 940 | if (cpc->reason == CP_UMOUNT) { |
25ca923b | 941 | set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
b5b82205 | 942 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+ |
1dbe4152 CL |
943 | cp_payload_blks + data_sum_blocks + |
944 | orphan_blocks + NR_CURSEG_NODE_TYPE); | |
127e670a | 945 | } else { |
25ca923b | 946 | clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
b5b82205 | 947 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + |
1dbe4152 CL |
948 | cp_payload_blks + data_sum_blocks + |
949 | orphan_blocks); | |
127e670a JK |
950 | } |
951 | ||
67298804 | 952 | if (orphan_num) |
25ca923b | 953 | set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 954 | else |
25ca923b | 955 | clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); |
127e670a | 956 | |
2ae4c673 JK |
957 | if (sbi->need_fsck) |
958 | set_ckpt_flags(ckpt, CP_FSCK_FLAG); | |
959 | ||
127e670a JK |
960 | /* update SIT/NAT bitmap */ |
961 | get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); | |
962 | get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); | |
963 | ||
964 | crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset)); | |
7e586fa0 JK |
965 | *((__le32 *)((unsigned char *)ckpt + |
966 | le32_to_cpu(ckpt->checksum_offset))) | |
127e670a JK |
967 | = cpu_to_le32(crc32); |
968 | ||
969 | start_blk = __start_cp_addr(sbi); | |
970 | ||
971 | /* write out checkpoint buffer at block 0 */ | |
972 | cp_page = grab_meta_page(sbi, start_blk++); | |
973 | kaddr = page_address(cp_page); | |
974 | memcpy(kaddr, ckpt, (1 << sbi->log_blocksize)); | |
975 | set_page_dirty(cp_page); | |
976 | f2fs_put_page(cp_page, 1); | |
977 | ||
1dbe4152 CL |
978 | for (i = 1; i < 1 + cp_payload_blks; i++) { |
979 | cp_page = grab_meta_page(sbi, start_blk++); | |
980 | kaddr = page_address(cp_page); | |
981 | memcpy(kaddr, (char *)ckpt + i * F2FS_BLKSIZE, | |
982 | (1 << sbi->log_blocksize)); | |
983 | set_page_dirty(cp_page); | |
984 | f2fs_put_page(cp_page, 1); | |
985 | } | |
986 | ||
67298804 | 987 | if (orphan_num) { |
127e670a JK |
988 | write_orphan_inodes(sbi, start_blk); |
989 | start_blk += orphan_blocks; | |
990 | } | |
991 | ||
992 | write_data_summaries(sbi, start_blk); | |
993 | start_blk += data_sum_blocks; | |
75ab4cb8 | 994 | if (cpc->reason == CP_UMOUNT) { |
127e670a JK |
995 | write_node_summaries(sbi, start_blk); |
996 | start_blk += NR_CURSEG_NODE_TYPE; | |
997 | } | |
998 | ||
999 | /* writeout checkpoint block */ | |
1000 | cp_page = grab_meta_page(sbi, start_blk); | |
1001 | kaddr = page_address(cp_page); | |
1002 | memcpy(kaddr, ckpt, (1 << sbi->log_blocksize)); | |
1003 | set_page_dirty(cp_page); | |
1004 | f2fs_put_page(cp_page, 1); | |
1005 | ||
1006 | /* wait for previous submitted node/meta pages writeback */ | |
fb51b5ef | 1007 | wait_on_all_pages_writeback(sbi); |
127e670a | 1008 | |
cf779cab JK |
1009 | if (unlikely(f2fs_cp_error(sbi))) |
1010 | return; | |
1011 | ||
4ef51a8f | 1012 | filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX); |
9df27d98 | 1013 | filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX); |
127e670a JK |
1014 | |
1015 | /* update user_block_counts */ | |
1016 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
1017 | sbi->alloc_valid_block_count = 0; | |
1018 | ||
1019 | /* Here, we only have one bio having CP pack */ | |
577e3495 | 1020 | sync_meta_pages(sbi, META_FLUSH, LONG_MAX); |
127e670a | 1021 | |
6a8f8ca5 JK |
1022 | /* wait for previous submitted meta pages writeback */ |
1023 | wait_on_all_pages_writeback(sbi); | |
1024 | ||
cf779cab JK |
1025 | release_dirty_inode(sbi); |
1026 | ||
1027 | if (unlikely(f2fs_cp_error(sbi))) | |
1028 | return; | |
1029 | ||
1030 | clear_prefree_segments(sbi); | |
1031 | F2FS_RESET_SB_DIRT(sbi); | |
127e670a JK |
1032 | } |
1033 | ||
0a8165d7 | 1034 | /* |
e1c42045 | 1035 | * We guarantee that this checkpoint procedure will not fail. |
127e670a | 1036 | */ |
75ab4cb8 | 1037 | void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
1038 | { |
1039 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1040 | unsigned long long ckpt_ver; | |
1041 | ||
75ab4cb8 | 1042 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops"); |
2af4bd6c | 1043 | |
43727527 | 1044 | mutex_lock(&sbi->cp_mutex); |
8501017e | 1045 | |
4b2fecc8 | 1046 | if (!sbi->s_dirty && cpc->reason != CP_DISCARD) |
8501017e | 1047 | goto out; |
cf779cab JK |
1048 | if (unlikely(f2fs_cp_error(sbi))) |
1049 | goto out; | |
1050 | if (block_operations(sbi)) | |
1051 | goto out; | |
127e670a | 1052 | |
75ab4cb8 | 1053 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops"); |
2af4bd6c | 1054 | |
458e6197 JK |
1055 | f2fs_submit_merged_bio(sbi, DATA, WRITE); |
1056 | f2fs_submit_merged_bio(sbi, NODE, WRITE); | |
1057 | f2fs_submit_merged_bio(sbi, META, WRITE); | |
127e670a JK |
1058 | |
1059 | /* | |
1060 | * update checkpoint pack index | |
1061 | * Increase the version number so that | |
1062 | * SIT entries and seg summaries are written at correct place | |
1063 | */ | |
d71b5564 | 1064 | ckpt_ver = cur_cp_version(ckpt); |
127e670a JK |
1065 | ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
1066 | ||
1067 | /* write cached NAT/SIT entries to NAT/SIT area */ | |
1068 | flush_nat_entries(sbi); | |
4b2fecc8 | 1069 | flush_sit_entries(sbi, cpc); |
127e670a | 1070 | |
127e670a | 1071 | /* unlock all the fs_lock[] in do_checkpoint() */ |
75ab4cb8 | 1072 | do_checkpoint(sbi, cpc); |
127e670a JK |
1073 | |
1074 | unblock_operations(sbi); | |
942e0be6 | 1075 | stat_inc_cp_count(sbi->stat_info); |
8501017e JK |
1076 | out: |
1077 | mutex_unlock(&sbi->cp_mutex); | |
75ab4cb8 | 1078 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint"); |
127e670a JK |
1079 | } |
1080 | ||
6451e041 | 1081 | void init_ino_entry_info(struct f2fs_sb_info *sbi) |
127e670a | 1082 | { |
6451e041 JK |
1083 | int i; |
1084 | ||
1085 | for (i = 0; i < MAX_INO_ENTRY; i++) { | |
67298804 CY |
1086 | struct inode_management *im = &sbi->im[i]; |
1087 | ||
1088 | INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC); | |
1089 | spin_lock_init(&im->ino_lock); | |
1090 | INIT_LIST_HEAD(&im->ino_list); | |
1091 | im->ino_num = 0; | |
6451e041 JK |
1092 | } |
1093 | ||
0d47c1ad GZ |
1094 | /* |
1095 | * considering 512 blocks in a segment 8 blocks are needed for cp | |
1096 | * and log segment summaries. Remaining blocks are used to keep | |
1097 | * orphan entries with the limitation one reserved segment | |
1098 | * for cp pack we can have max 1020*504 orphan entries | |
1099 | */ | |
b5b82205 CY |
1100 | sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS - |
1101 | NR_CURSEG_TYPE) * F2FS_ORPHANS_PER_BLOCK; | |
127e670a JK |
1102 | } |
1103 | ||
6e6093a8 | 1104 | int __init create_checkpoint_caches(void) |
127e670a | 1105 | { |
6451e041 JK |
1106 | ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
1107 | sizeof(struct ino_entry)); | |
1108 | if (!ino_entry_slab) | |
127e670a JK |
1109 | return -ENOMEM; |
1110 | inode_entry_slab = f2fs_kmem_cache_create("f2fs_dirty_dir_entry", | |
e8512d2e | 1111 | sizeof(struct dir_inode_entry)); |
6bacf52f | 1112 | if (!inode_entry_slab) { |
6451e041 | 1113 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1114 | return -ENOMEM; |
1115 | } | |
1116 | return 0; | |
1117 | } | |
1118 | ||
1119 | void destroy_checkpoint_caches(void) | |
1120 | { | |
6451e041 | 1121 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1122 | kmem_cache_destroy(inode_entry_slab); |
1123 | } |