Commit | Line | Data |
---|---|---|
0a8165d7 | 1 | /* |
d624c96f JK |
2 | * fs/f2fs/recovery.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/f2fs_fs.h> | |
13 | #include "f2fs.h" | |
14 | #include "node.h" | |
15 | #include "segment.h" | |
16 | ||
441ac5cb JK |
17 | /* |
18 | * Roll forward recovery scenarios. | |
19 | * | |
20 | * [Term] F: fsync_mark, D: dentry_mark | |
21 | * | |
22 | * 1. inode(x) | CP | inode(x) | dnode(F) | |
23 | * -> Update the latest inode(x). | |
24 | * | |
25 | * 2. inode(x) | CP | inode(F) | dnode(F) | |
26 | * -> No problem. | |
27 | * | |
28 | * 3. inode(x) | CP | dnode(F) | inode(x) | |
29 | * -> Recover to the latest dnode(F), and drop the last inode(x) | |
30 | * | |
31 | * 4. inode(x) | CP | dnode(F) | inode(F) | |
32 | * -> No problem. | |
33 | * | |
34 | * 5. CP | inode(x) | dnode(F) | |
35 | * -> The inode(DF) was missing. Should drop this dnode(F). | |
36 | * | |
37 | * 6. CP | inode(DF) | dnode(F) | |
38 | * -> No problem. | |
39 | * | |
40 | * 7. CP | dnode(F) | inode(DF) | |
41 | * -> If f2fs_iget fails, then goto next to find inode(DF). | |
42 | * | |
43 | * 8. CP | dnode(F) | inode(x) | |
44 | * -> If f2fs_iget fails, then goto next to find inode(DF). | |
45 | * But it will fail due to no inode(DF). | |
46 | */ | |
47 | ||
d624c96f JK |
48 | static struct kmem_cache *fsync_entry_slab; |
49 | ||
50 | bool space_for_roll_forward(struct f2fs_sb_info *sbi) | |
51 | { | |
41382ec4 JK |
52 | s64 nalloc = percpu_counter_sum_positive(&sbi->alloc_valid_block_count); |
53 | ||
54 | if (sbi->last_valid_block_count + nalloc > sbi->user_block_count) | |
d624c96f JK |
55 | return false; |
56 | return true; | |
57 | } | |
58 | ||
59 | static struct fsync_inode_entry *get_fsync_inode(struct list_head *head, | |
60 | nid_t ino) | |
61 | { | |
d624c96f JK |
62 | struct fsync_inode_entry *entry; |
63 | ||
2d7b822a | 64 | list_for_each_entry(entry, head, list) |
d624c96f JK |
65 | if (entry->inode->i_ino == ino) |
66 | return entry; | |
2d7b822a | 67 | |
d624c96f JK |
68 | return NULL; |
69 | } | |
70 | ||
3f8ab270 CY |
71 | static struct fsync_inode_entry *add_fsync_inode(struct list_head *head, |
72 | struct inode *inode) | |
73 | { | |
74 | struct fsync_inode_entry *entry; | |
75 | ||
76 | entry = kmem_cache_alloc(fsync_entry_slab, GFP_F2FS_ZERO); | |
77 | if (!entry) | |
78 | return NULL; | |
79 | ||
80 | entry->inode = inode; | |
81 | list_add_tail(&entry->list, head); | |
82 | ||
83 | return entry; | |
84 | } | |
85 | ||
86 | static void del_fsync_inode(struct fsync_inode_entry *entry) | |
87 | { | |
88 | iput(entry->inode); | |
89 | list_del(&entry->list); | |
90 | kmem_cache_free(fsync_entry_slab, entry); | |
91 | } | |
92 | ||
f61cce5b CY |
93 | static int recover_dentry(struct inode *inode, struct page *ipage, |
94 | struct list_head *dir_list) | |
d624c96f | 95 | { |
58bfaf44 | 96 | struct f2fs_inode *raw_inode = F2FS_INODE(ipage); |
74d0b917 | 97 | nid_t pino = le32_to_cpu(raw_inode->i_pino); |
6b8213d9 | 98 | struct f2fs_dir_entry *de; |
e7ba108a | 99 | struct fscrypt_name fname; |
d624c96f | 100 | struct page *page; |
6b8213d9 | 101 | struct inode *dir, *einode; |
f61cce5b | 102 | struct fsync_inode_entry *entry; |
d624c96f | 103 | int err = 0; |
e7ba108a | 104 | char *name; |
d624c96f | 105 | |
f61cce5b CY |
106 | entry = get_fsync_inode(dir_list, pino); |
107 | if (!entry) { | |
108 | dir = f2fs_iget(inode->i_sb, pino); | |
109 | if (IS_ERR(dir)) { | |
110 | err = PTR_ERR(dir); | |
111 | goto out; | |
112 | } | |
113 | ||
114 | entry = add_fsync_inode(dir_list, dir); | |
115 | if (!entry) { | |
116 | err = -ENOMEM; | |
117 | iput(dir); | |
118 | goto out; | |
119 | } | |
ed57c27f JK |
120 | } |
121 | ||
f61cce5b CY |
122 | dir = entry->inode; |
123 | ||
e7ba108a SL |
124 | memset(&fname, 0, sizeof(struct fscrypt_name)); |
125 | fname.disk_name.len = le32_to_cpu(raw_inode->i_namelen); | |
126 | fname.disk_name.name = raw_inode->i_name; | |
d96b1431 | 127 | |
e7ba108a | 128 | if (unlikely(fname.disk_name.len > F2FS_NAME_LEN)) { |
d96b1431 CY |
129 | WARN_ON(1); |
130 | err = -ENAMETOOLONG; | |
f61cce5b | 131 | goto out; |
d96b1431 | 132 | } |
6b8213d9 | 133 | retry: |
e7ba108a | 134 | de = __f2fs_find_entry(dir, &fname, &page); |
418f6c27 | 135 | if (de && inode->i_ino == le32_to_cpu(de->ino)) |
2e5558f4 | 136 | goto out_unmap_put; |
418f6c27 | 137 | |
6b8213d9 JK |
138 | if (de) { |
139 | einode = f2fs_iget(inode->i_sb, le32_to_cpu(de->ino)); | |
140 | if (IS_ERR(einode)) { | |
141 | WARN_ON(1); | |
5c1f9927 CY |
142 | err = PTR_ERR(einode); |
143 | if (err == -ENOENT) | |
6b8213d9 | 144 | err = -EEXIST; |
2e5558f4 RK |
145 | goto out_unmap_put; |
146 | } | |
4081363f | 147 | err = acquire_orphan_inode(F2FS_I_SB(inode)); |
2e5558f4 RK |
148 | if (err) { |
149 | iput(einode); | |
150 | goto out_unmap_put; | |
6b8213d9 | 151 | } |
dbeacf02 | 152 | f2fs_delete_entry(de, page, dir, einode); |
6b8213d9 JK |
153 | iput(einode); |
154 | goto retry; | |
91246c21 CY |
155 | } else if (IS_ERR(page)) { |
156 | err = PTR_ERR(page); | |
157 | } else { | |
e7ba108a | 158 | err = __f2fs_do_add_link(dir, &fname, inode, |
91246c21 | 159 | inode->i_ino, inode->i_mode); |
d624c96f | 160 | } |
2e5558f4 RK |
161 | goto out; |
162 | ||
163 | out_unmap_put: | |
9486ba44 | 164 | f2fs_dentry_kunmap(dir, page); |
2e5558f4 | 165 | f2fs_put_page(page, 0); |
d624c96f | 166 | out: |
e7ba108a SL |
167 | if (file_enc_name(inode)) |
168 | name = "<encrypted>"; | |
169 | else | |
170 | name = raw_inode->i_name; | |
6c311ec6 CF |
171 | f2fs_msg(inode->i_sb, KERN_NOTICE, |
172 | "%s: ino = %x, name = %s, dir = %lx, err = %d", | |
e7ba108a | 173 | __func__, ino_of_node(ipage), name, |
f28c06fa | 174 | IS_ERR(dir) ? 0 : dir->i_ino, err); |
d624c96f JK |
175 | return err; |
176 | } | |
177 | ||
c52e1b10 | 178 | static void recover_inode(struct inode *inode, struct page *page) |
d624c96f | 179 | { |
441ac5cb | 180 | struct f2fs_inode *raw = F2FS_INODE(page); |
e7d55452 | 181 | char *name; |
441ac5cb JK |
182 | |
183 | inode->i_mode = le16_to_cpu(raw->i_mode); | |
fc9581c8 | 184 | f2fs_i_size_write(inode, le64_to_cpu(raw->i_size)); |
441ac5cb JK |
185 | inode->i_atime.tv_sec = le64_to_cpu(raw->i_mtime); |
186 | inode->i_ctime.tv_sec = le64_to_cpu(raw->i_ctime); | |
187 | inode->i_mtime.tv_sec = le64_to_cpu(raw->i_mtime); | |
188 | inode->i_atime.tv_nsec = le32_to_cpu(raw->i_mtime_nsec); | |
189 | inode->i_ctime.tv_nsec = le32_to_cpu(raw->i_ctime_nsec); | |
190 | inode->i_mtime.tv_nsec = le32_to_cpu(raw->i_mtime_nsec); | |
f356fe0c | 191 | |
e7d55452 JK |
192 | if (file_enc_name(inode)) |
193 | name = "<encrypted>"; | |
194 | else | |
195 | name = F2FS_INODE(page)->i_name; | |
196 | ||
f356fe0c | 197 | f2fs_msg(inode->i_sb, KERN_NOTICE, "recover_inode: ino = %x, name = %s", |
e7d55452 | 198 | ino_of_node(page), name); |
d624c96f JK |
199 | } |
200 | ||
807b1e1c JK |
201 | static bool is_same_inode(struct inode *inode, struct page *ipage) |
202 | { | |
203 | struct f2fs_inode *ri = F2FS_INODE(ipage); | |
204 | struct timespec disk; | |
205 | ||
206 | if (!IS_INODE(ipage)) | |
207 | return true; | |
208 | ||
209 | disk.tv_sec = le64_to_cpu(ri->i_ctime); | |
210 | disk.tv_nsec = le32_to_cpu(ri->i_ctime_nsec); | |
211 | if (timespec_compare(&inode->i_ctime, &disk) > 0) | |
212 | return false; | |
213 | ||
214 | disk.tv_sec = le64_to_cpu(ri->i_atime); | |
215 | disk.tv_nsec = le32_to_cpu(ri->i_atime_nsec); | |
216 | if (timespec_compare(&inode->i_atime, &disk) > 0) | |
217 | return false; | |
218 | ||
219 | disk.tv_sec = le64_to_cpu(ri->i_mtime); | |
220 | disk.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); | |
221 | if (timespec_compare(&inode->i_mtime, &disk) > 0) | |
222 | return false; | |
223 | ||
224 | return true; | |
225 | } | |
226 | ||
d624c96f JK |
227 | static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head) |
228 | { | |
d71b5564 | 229 | unsigned long long cp_ver = cur_cp_version(F2FS_CKPT(sbi)); |
d624c96f | 230 | struct curseg_info *curseg; |
3f8ab270 | 231 | struct inode *inode; |
4c521f49 | 232 | struct page *page = NULL; |
d624c96f JK |
233 | block_t blkaddr; |
234 | int err = 0; | |
235 | ||
236 | /* get node pages in the current segment */ | |
237 | curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); | |
695fd1ed | 238 | blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
d624c96f | 239 | |
d624c96f JK |
240 | while (1) { |
241 | struct fsync_inode_entry *entry; | |
242 | ||
f0c9cada | 243 | if (!is_valid_blkaddr(sbi, blkaddr, META_POR)) |
4c521f49 | 244 | return 0; |
d624c96f | 245 | |
2b947003 | 246 | page = get_tmp_page(sbi, blkaddr); |
393ff91f | 247 | |
6ead1142 | 248 | if (cp_ver != cpver_of_node(page)) |
f356fe0c | 249 | break; |
d624c96f JK |
250 | |
251 | if (!is_fsync_dnode(page)) | |
252 | goto next; | |
253 | ||
254 | entry = get_fsync_inode(head, ino_of_node(page)); | |
807b1e1c JK |
255 | if (entry) { |
256 | if (!is_same_inode(entry->inode, page)) | |
257 | goto next; | |
258 | } else { | |
d624c96f | 259 | if (IS_INODE(page) && is_dent_dnode(page)) { |
6ead1142 JK |
260 | err = recover_inode_page(sbi, page); |
261 | if (err) | |
f356fe0c | 262 | break; |
d624c96f JK |
263 | } |
264 | ||
441ac5cb JK |
265 | /* |
266 | * CP | dnode(F) | inode(DF) | |
267 | * For this case, we should not give up now. | |
268 | */ | |
3f8ab270 CY |
269 | inode = f2fs_iget(sbi->sb, ino_of_node(page)); |
270 | if (IS_ERR(inode)) { | |
271 | err = PTR_ERR(inode); | |
8fbc418f JK |
272 | if (err == -ENOENT) { |
273 | err = 0; | |
441ac5cb | 274 | goto next; |
8fbc418f | 275 | } |
f356fe0c | 276 | break; |
d624c96f | 277 | } |
3f8ab270 CY |
278 | |
279 | /* add this fsync inode to the list */ | |
280 | entry = add_fsync_inode(head, inode); | |
281 | if (!entry) { | |
282 | err = -ENOMEM; | |
283 | iput(inode); | |
284 | break; | |
285 | } | |
d624c96f | 286 | } |
addbe45b JK |
287 | entry->blkaddr = blkaddr; |
288 | ||
608514de JK |
289 | if (IS_INODE(page) && is_dent_dnode(page)) |
290 | entry->last_dentry = blkaddr; | |
d624c96f JK |
291 | next: |
292 | /* check next segment */ | |
293 | blkaddr = next_blkaddr_of_node(page); | |
4c521f49 | 294 | f2fs_put_page(page, 1); |
635aee1f CY |
295 | |
296 | ra_meta_pages_cond(sbi, blkaddr); | |
d624c96f | 297 | } |
4c521f49 | 298 | f2fs_put_page(page, 1); |
d624c96f JK |
299 | return err; |
300 | } | |
301 | ||
5ebefc5b | 302 | static void destroy_fsync_dnodes(struct list_head *head) |
d624c96f | 303 | { |
d8b79b2f DC |
304 | struct fsync_inode_entry *entry, *tmp; |
305 | ||
3f8ab270 CY |
306 | list_for_each_entry_safe(entry, tmp, head, list) |
307 | del_fsync_inode(entry); | |
d624c96f JK |
308 | } |
309 | ||
39cf72cf | 310 | static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi, |
b292dcab | 311 | block_t blkaddr, struct dnode_of_data *dn) |
d624c96f JK |
312 | { |
313 | struct seg_entry *sentry; | |
314 | unsigned int segno = GET_SEGNO(sbi, blkaddr); | |
491c0854 | 315 | unsigned short blkoff = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
f6517cfc | 316 | struct f2fs_summary_block *sum_node; |
d624c96f | 317 | struct f2fs_summary sum; |
f6517cfc | 318 | struct page *sum_page, *node_page; |
c9ef4810 | 319 | struct dnode_of_data tdn = *dn; |
b292dcab | 320 | nid_t ino, nid; |
d624c96f | 321 | struct inode *inode; |
de93653f | 322 | unsigned int offset; |
d624c96f JK |
323 | block_t bidx; |
324 | int i; | |
325 | ||
326 | sentry = get_seg_entry(sbi, segno); | |
327 | if (!f2fs_test_bit(blkoff, sentry->cur_valid_map)) | |
39cf72cf | 328 | return 0; |
d624c96f JK |
329 | |
330 | /* Get the previous summary */ | |
331 | for (i = CURSEG_WARM_DATA; i <= CURSEG_COLD_DATA; i++) { | |
332 | struct curseg_info *curseg = CURSEG_I(sbi, i); | |
333 | if (curseg->segno == segno) { | |
334 | sum = curseg->sum_blk->entries[blkoff]; | |
f6517cfc | 335 | goto got_it; |
d624c96f JK |
336 | } |
337 | } | |
d624c96f | 338 | |
f6517cfc JK |
339 | sum_page = get_sum_page(sbi, segno); |
340 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); | |
341 | sum = sum_node->entries[blkoff]; | |
342 | f2fs_put_page(sum_page, 1); | |
343 | got_it: | |
b292dcab JK |
344 | /* Use the locked dnode page and inode */ |
345 | nid = le32_to_cpu(sum.nid); | |
346 | if (dn->inode->i_ino == nid) { | |
b292dcab | 347 | tdn.nid = nid; |
c9ef4810 JK |
348 | if (!dn->inode_page_locked) |
349 | lock_page(dn->inode_page); | |
b292dcab | 350 | tdn.node_page = dn->inode_page; |
060dd67b | 351 | tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node); |
c9ef4810 | 352 | goto truncate_out; |
b292dcab | 353 | } else if (dn->nid == nid) { |
060dd67b | 354 | tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node); |
c9ef4810 | 355 | goto truncate_out; |
b292dcab JK |
356 | } |
357 | ||
d624c96f | 358 | /* Get the node page */ |
b292dcab | 359 | node_page = get_node_page(sbi, nid); |
39cf72cf JK |
360 | if (IS_ERR(node_page)) |
361 | return PTR_ERR(node_page); | |
de93653f JK |
362 | |
363 | offset = ofs_of_node(node_page); | |
d624c96f JK |
364 | ino = ino_of_node(node_page); |
365 | f2fs_put_page(node_page, 1); | |
366 | ||
60979115 JK |
367 | if (ino != dn->inode->i_ino) { |
368 | /* Deallocate previous index in the node page */ | |
369 | inode = f2fs_iget(sbi->sb, ino); | |
370 | if (IS_ERR(inode)) | |
371 | return PTR_ERR(inode); | |
372 | } else { | |
373 | inode = dn->inode; | |
374 | } | |
06025f4d | 375 | |
81ca7350 | 376 | bidx = start_bidx_of_node(offset, inode) + le16_to_cpu(sum.ofs_in_node); |
de93653f | 377 | |
c9ef4810 JK |
378 | /* |
379 | * if inode page is locked, unlock temporarily, but its reference | |
380 | * count keeps alive. | |
381 | */ | |
382 | if (ino == dn->inode->i_ino && dn->inode_page_locked) | |
383 | unlock_page(dn->inode_page); | |
384 | ||
385 | set_new_dnode(&tdn, inode, NULL, NULL, 0); | |
386 | if (get_dnode_of_data(&tdn, bidx, LOOKUP_NODE)) | |
387 | goto out; | |
388 | ||
389 | if (tdn.data_blkaddr == blkaddr) | |
390 | truncate_data_blocks_range(&tdn, 1); | |
391 | ||
392 | f2fs_put_dnode(&tdn); | |
393 | out: | |
394 | if (ino != dn->inode->i_ino) | |
60979115 | 395 | iput(inode); |
c9ef4810 JK |
396 | else if (dn->inode_page_locked) |
397 | lock_page(dn->inode_page); | |
398 | return 0; | |
399 | ||
400 | truncate_out: | |
401 | if (datablock_addr(tdn.node_page, tdn.ofs_in_node) == blkaddr) | |
402 | truncate_data_blocks_range(&tdn, 1); | |
403 | if (dn->inode->i_ino == nid && !dn->inode_page_locked) | |
404 | unlock_page(dn->inode_page); | |
39cf72cf | 405 | return 0; |
d624c96f JK |
406 | } |
407 | ||
6ead1142 | 408 | static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, |
d624c96f JK |
409 | struct page *page, block_t blkaddr) |
410 | { | |
d624c96f | 411 | struct dnode_of_data dn; |
d624c96f | 412 | struct node_info ni; |
81ca7350 | 413 | unsigned int start, end; |
f356fe0c | 414 | int err = 0, recovered = 0; |
d624c96f | 415 | |
1c35a90e JK |
416 | /* step 1: recover xattr */ |
417 | if (IS_INODE(page)) { | |
418 | recover_inline_xattr(inode, page); | |
419 | } else if (f2fs_has_xattr_block(ofs_of_node(page))) { | |
bc4a1f87 JK |
420 | /* |
421 | * Deprecated; xattr blocks should be found from cold log. | |
422 | * But, we should remain this for backward compatibility. | |
423 | */ | |
1c35a90e | 424 | recover_xattr_data(inode, page, blkaddr); |
1e1bb4ba | 425 | goto out; |
1c35a90e | 426 | } |
1e1bb4ba | 427 | |
1c35a90e JK |
428 | /* step 2: recover inline data */ |
429 | if (recover_inline_data(inode, page)) | |
abb2366c JK |
430 | goto out; |
431 | ||
1c35a90e | 432 | /* step 3: recover data indices */ |
81ca7350 CY |
433 | start = start_bidx_of_node(ofs_of_node(page), inode); |
434 | end = start + ADDRS_PER_PAGE(page, inode); | |
d624c96f JK |
435 | |
436 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
39936837 | 437 | |
6ead1142 | 438 | err = get_dnode_of_data(&dn, start, ALLOC_NODE); |
72235541 | 439 | if (err) |
1e1bb4ba | 440 | goto out; |
d624c96f | 441 | |
fec1d657 | 442 | f2fs_wait_on_page_writeback(dn.node_page, NODE, true); |
d624c96f JK |
443 | |
444 | get_node_info(sbi, dn.nid, &ni); | |
9850cf4a JK |
445 | f2fs_bug_on(sbi, ni.ino != ino_of_node(page)); |
446 | f2fs_bug_on(sbi, ofs_of_node(dn.node_page) != ofs_of_node(page)); | |
d624c96f | 447 | |
12a8343e | 448 | for (; start < end; start++, dn.ofs_in_node++) { |
d624c96f JK |
449 | block_t src, dest; |
450 | ||
451 | src = datablock_addr(dn.node_page, dn.ofs_in_node); | |
452 | dest = datablock_addr(page, dn.ofs_in_node); | |
453 | ||
12a8343e CY |
454 | /* skip recovering if dest is the same as src */ |
455 | if (src == dest) | |
456 | continue; | |
457 | ||
458 | /* dest is invalid, just invalidate src block */ | |
459 | if (dest == NULL_ADDR) { | |
460 | truncate_data_blocks_range(&dn, 1); | |
461 | continue; | |
462 | } | |
463 | ||
26de9b11 JK |
464 | if ((start + 1) << PAGE_SHIFT > i_size_read(inode)) |
465 | f2fs_i_size_write(inode, (start + 1) << PAGE_SHIFT); | |
466 | ||
12a8343e CY |
467 | /* |
468 | * dest is reserved block, invalidate src block | |
469 | * and then reserve one new block in dnode page. | |
470 | */ | |
471 | if (dest == NEW_ADDR) { | |
472 | truncate_data_blocks_range(&dn, 1); | |
3b9b10f9 | 473 | reserve_new_block(&dn); |
12a8343e CY |
474 | continue; |
475 | } | |
476 | ||
477 | /* dest is valid block, try to recover from src to dest */ | |
478 | if (is_valid_blkaddr(sbi, dest, META_POR)) { | |
e03b07d9 | 479 | |
d624c96f | 480 | if (src == NULL_ADDR) { |
5d56b671 | 481 | err = reserve_new_block(&dn); |
975756c4 JK |
482 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
483 | while (err) | |
484 | err = reserve_new_block(&dn); | |
485 | #endif | |
d624c96f | 486 | /* We should not get -ENOSPC */ |
9850cf4a | 487 | f2fs_bug_on(sbi, err); |
6f3ec995 JK |
488 | if (err) |
489 | goto err; | |
d624c96f JK |
490 | } |
491 | ||
492 | /* Check the previous node page having this index */ | |
39cf72cf JK |
493 | err = check_index_in_prev_nodes(sbi, dest, &dn); |
494 | if (err) | |
495 | goto err; | |
d624c96f | 496 | |
d624c96f | 497 | /* write dummy data page */ |
528e3459 | 498 | f2fs_replace_block(sbi, &dn, src, dest, |
28bc106b | 499 | ni.version, false, false); |
f356fe0c | 500 | recovered++; |
d624c96f | 501 | } |
d624c96f JK |
502 | } |
503 | ||
d624c96f JK |
504 | copy_node_footer(dn.node_page, page); |
505 | fill_node_footer(dn.node_page, dn.nid, ni.ino, | |
506 | ofs_of_node(page), false); | |
507 | set_page_dirty(dn.node_page); | |
39cf72cf | 508 | err: |
d624c96f | 509 | f2fs_put_dnode(&dn); |
1e1bb4ba | 510 | out: |
6c311ec6 CF |
511 | f2fs_msg(sbi->sb, KERN_NOTICE, |
512 | "recover_data: ino = %lx, recovered = %d blocks, err = %d", | |
513 | inode->i_ino, recovered, err); | |
39cf72cf | 514 | return err; |
d624c96f JK |
515 | } |
516 | ||
f61cce5b CY |
517 | static int recover_data(struct f2fs_sb_info *sbi, struct list_head *inode_list, |
518 | struct list_head *dir_list) | |
d624c96f | 519 | { |
d71b5564 | 520 | unsigned long long cp_ver = cur_cp_version(F2FS_CKPT(sbi)); |
d624c96f | 521 | struct curseg_info *curseg; |
4c521f49 | 522 | struct page *page = NULL; |
6ead1142 | 523 | int err = 0; |
d624c96f JK |
524 | block_t blkaddr; |
525 | ||
526 | /* get node pages in the current segment */ | |
b7973f23 | 527 | curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
d624c96f JK |
528 | blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
529 | ||
d624c96f JK |
530 | while (1) { |
531 | struct fsync_inode_entry *entry; | |
532 | ||
f0c9cada | 533 | if (!is_valid_blkaddr(sbi, blkaddr, META_POR)) |
4c521f49 | 534 | break; |
d624c96f | 535 | |
635aee1f CY |
536 | ra_meta_pages_cond(sbi, blkaddr); |
537 | ||
2b947003 | 538 | page = get_tmp_page(sbi, blkaddr); |
393ff91f | 539 | |
4c521f49 JK |
540 | if (cp_ver != cpver_of_node(page)) { |
541 | f2fs_put_page(page, 1); | |
45856aff | 542 | break; |
4c521f49 | 543 | } |
d624c96f | 544 | |
f61cce5b | 545 | entry = get_fsync_inode(inode_list, ino_of_node(page)); |
d624c96f JK |
546 | if (!entry) |
547 | goto next; | |
441ac5cb JK |
548 | /* |
549 | * inode(x) | CP | inode(x) | dnode(F) | |
550 | * In this case, we can lose the latest inode(x). | |
c52e1b10 | 551 | * So, call recover_inode for the inode update. |
441ac5cb | 552 | */ |
608514de | 553 | if (IS_INODE(page)) |
c52e1b10 JK |
554 | recover_inode(entry->inode, page); |
555 | if (entry->last_dentry == blkaddr) { | |
f61cce5b | 556 | err = recover_dentry(entry->inode, page, dir_list); |
c52e1b10 JK |
557 | if (err) { |
558 | f2fs_put_page(page, 1); | |
559 | break; | |
560 | } | |
561 | } | |
6ead1142 | 562 | err = do_recover_data(sbi, entry->inode, page, blkaddr); |
4c521f49 JK |
563 | if (err) { |
564 | f2fs_put_page(page, 1); | |
45856aff | 565 | break; |
4c521f49 | 566 | } |
d624c96f | 567 | |
3f8ab270 CY |
568 | if (entry->blkaddr == blkaddr) |
569 | del_fsync_inode(entry); | |
d624c96f JK |
570 | next: |
571 | /* check next segment */ | |
572 | blkaddr = next_blkaddr_of_node(page); | |
4c521f49 | 573 | f2fs_put_page(page, 1); |
d624c96f | 574 | } |
6ead1142 JK |
575 | if (!err) |
576 | allocate_new_segments(sbi); | |
577 | return err; | |
d624c96f JK |
578 | } |
579 | ||
6781eabb | 580 | int recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only) |
d624c96f | 581 | { |
cf2271e7 | 582 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
d624c96f | 583 | struct list_head inode_list; |
f61cce5b | 584 | struct list_head dir_list; |
cf2271e7 | 585 | block_t blkaddr; |
6ead1142 | 586 | int err; |
6781eabb | 587 | int ret = 0; |
aabe5136 | 588 | bool need_writecp = false; |
d624c96f JK |
589 | |
590 | fsync_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_inode_entry", | |
e8512d2e | 591 | sizeof(struct fsync_inode_entry)); |
6bacf52f | 592 | if (!fsync_entry_slab) |
6ead1142 | 593 | return -ENOMEM; |
d624c96f JK |
594 | |
595 | INIT_LIST_HEAD(&inode_list); | |
f61cce5b | 596 | INIT_LIST_HEAD(&dir_list); |
d624c96f | 597 | |
14f4e690 JK |
598 | /* prevent checkpoint */ |
599 | mutex_lock(&sbi->cp_mutex); | |
600 | ||
cf2271e7 JK |
601 | blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
602 | ||
315df839 | 603 | /* step #1: find fsynced inode numbers */ |
6ead1142 | 604 | err = find_fsync_dnodes(sbi, &inode_list); |
6781eabb | 605 | if (err || list_empty(&inode_list)) |
d624c96f JK |
606 | goto out; |
607 | ||
6781eabb JK |
608 | if (check_only) { |
609 | ret = 1; | |
d624c96f | 610 | goto out; |
6781eabb | 611 | } |
d624c96f | 612 | |
aabe5136 | 613 | need_writecp = true; |
691c6fd2 | 614 | |
d624c96f | 615 | /* step #2: recover data */ |
f61cce5b | 616 | err = recover_data(sbi, &inode_list, &dir_list); |
b307384e | 617 | if (!err) |
9850cf4a | 618 | f2fs_bug_on(sbi, !list_empty(&inode_list)); |
d624c96f | 619 | out: |
5ebefc5b | 620 | destroy_fsync_dnodes(&inode_list); |
cf2271e7 | 621 | |
4c521f49 JK |
622 | /* truncate meta pages to be used by the recovery */ |
623 | truncate_inode_pages_range(META_MAPPING(sbi), | |
09cbfeaf | 624 | (loff_t)MAIN_BLKADDR(sbi) << PAGE_SHIFT, -1); |
4c521f49 | 625 | |
cf2271e7 JK |
626 | if (err) { |
627 | truncate_inode_pages_final(NODE_MAPPING(sbi)); | |
628 | truncate_inode_pages_final(META_MAPPING(sbi)); | |
629 | } | |
630 | ||
caf0047e | 631 | clear_sbi_flag(sbi, SBI_POR_DOING); |
cf2271e7 | 632 | if (err) { |
e90c2d28 CY |
633 | bool invalidate = false; |
634 | ||
36abef4e JK |
635 | if (test_opt(sbi, LFS)) { |
636 | update_meta_page(sbi, NULL, blkaddr); | |
e90c2d28 | 637 | invalidate = true; |
36abef4e JK |
638 | } else if (discard_next_dnode(sbi, blkaddr)) { |
639 | invalidate = true; | |
640 | } | |
cf2271e7 | 641 | |
275b66b0 CY |
642 | f2fs_wait_all_discard_bio(sbi); |
643 | ||
cf2271e7 JK |
644 | /* Flush all the NAT/SIT pages */ |
645 | while (get_pages(sbi, F2FS_DIRTY_META)) | |
646 | sync_meta_pages(sbi, META, LONG_MAX); | |
e90c2d28 CY |
647 | |
648 | /* invalidate temporary meta page */ | |
649 | if (invalidate) | |
650 | invalidate_mapping_pages(META_MAPPING(sbi), | |
651 | blkaddr, blkaddr); | |
652 | ||
14f4e690 JK |
653 | set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); |
654 | mutex_unlock(&sbi->cp_mutex); | |
cf2271e7 | 655 | } else if (need_writecp) { |
75ab4cb8 | 656 | struct cp_control cpc = { |
10027551 | 657 | .reason = CP_RECOVERY, |
75ab4cb8 | 658 | }; |
14f4e690 | 659 | mutex_unlock(&sbi->cp_mutex); |
c34f42e2 | 660 | err = write_checkpoint(sbi, &cpc); |
14f4e690 JK |
661 | } else { |
662 | mutex_unlock(&sbi->cp_mutex); | |
cf2271e7 | 663 | } |
f61cce5b CY |
664 | |
665 | destroy_fsync_dnodes(&dir_list); | |
666 | kmem_cache_destroy(fsync_entry_slab); | |
6781eabb | 667 | return ret ? ret: err; |
d624c96f | 668 | } |