Commit | Line | Data |
---|---|---|
7c1a000d | 1 | // SPDX-License-Identifier: GPL-2.0 |
0a8165d7 | 2 | /* |
d624c96f JK |
3 | * fs/f2fs/recovery.c |
4 | * | |
5 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
6 | * http://www.samsung.com/ | |
d624c96f JK |
7 | */ |
8 | #include <linux/fs.h> | |
9 | #include <linux/f2fs_fs.h> | |
10 | #include "f2fs.h" | |
11 | #include "node.h" | |
12 | #include "segment.h" | |
13 | ||
441ac5cb JK |
14 | /* |
15 | * Roll forward recovery scenarios. | |
16 | * | |
17 | * [Term] F: fsync_mark, D: dentry_mark | |
18 | * | |
19 | * 1. inode(x) | CP | inode(x) | dnode(F) | |
20 | * -> Update the latest inode(x). | |
21 | * | |
22 | * 2. inode(x) | CP | inode(F) | dnode(F) | |
23 | * -> No problem. | |
24 | * | |
25 | * 3. inode(x) | CP | dnode(F) | inode(x) | |
26 | * -> Recover to the latest dnode(F), and drop the last inode(x) | |
27 | * | |
28 | * 4. inode(x) | CP | dnode(F) | inode(F) | |
29 | * -> No problem. | |
30 | * | |
31 | * 5. CP | inode(x) | dnode(F) | |
32 | * -> The inode(DF) was missing. Should drop this dnode(F). | |
33 | * | |
34 | * 6. CP | inode(DF) | dnode(F) | |
35 | * -> No problem. | |
36 | * | |
37 | * 7. CP | dnode(F) | inode(DF) | |
38 | * -> If f2fs_iget fails, then goto next to find inode(DF). | |
39 | * | |
40 | * 8. CP | dnode(F) | inode(x) | |
41 | * -> If f2fs_iget fails, then goto next to find inode(DF). | |
42 | * But it will fail due to no inode(DF). | |
43 | */ | |
44 | ||
d624c96f JK |
45 | static struct kmem_cache *fsync_entry_slab; |
46 | ||
4d57b86d | 47 | bool f2fs_space_for_roll_forward(struct f2fs_sb_info *sbi) |
d624c96f | 48 | { |
41382ec4 JK |
49 | s64 nalloc = percpu_counter_sum_positive(&sbi->alloc_valid_block_count); |
50 | ||
51 | if (sbi->last_valid_block_count + nalloc > sbi->user_block_count) | |
d624c96f JK |
52 | return false; |
53 | return true; | |
54 | } | |
55 | ||
56 | static struct fsync_inode_entry *get_fsync_inode(struct list_head *head, | |
57 | nid_t ino) | |
58 | { | |
d624c96f JK |
59 | struct fsync_inode_entry *entry; |
60 | ||
2d7b822a | 61 | list_for_each_entry(entry, head, list) |
d624c96f JK |
62 | if (entry->inode->i_ino == ino) |
63 | return entry; | |
2d7b822a | 64 | |
d624c96f JK |
65 | return NULL; |
66 | } | |
67 | ||
f4702d61 | 68 | static struct fsync_inode_entry *add_fsync_inode(struct f2fs_sb_info *sbi, |
4b2414d0 | 69 | struct list_head *head, nid_t ino, bool quota_inode) |
3f8ab270 | 70 | { |
e8ea9b3d | 71 | struct inode *inode; |
3f8ab270 | 72 | struct fsync_inode_entry *entry; |
4b2414d0 | 73 | int err; |
3f8ab270 | 74 | |
e8ea9b3d | 75 | inode = f2fs_iget_retry(sbi->sb, ino); |
f4702d61 JK |
76 | if (IS_ERR(inode)) |
77 | return ERR_CAST(inode); | |
78 | ||
4b2414d0 CY |
79 | err = dquot_initialize(inode); |
80 | if (err) | |
81 | goto err_out; | |
82 | ||
83 | if (quota_inode) { | |
84 | err = dquot_alloc_inode(inode); | |
85 | if (err) | |
86 | goto err_out; | |
87 | } | |
88 | ||
e8ea9b3d | 89 | entry = f2fs_kmem_cache_alloc(fsync_entry_slab, GFP_F2FS_ZERO); |
3f8ab270 CY |
90 | entry->inode = inode; |
91 | list_add_tail(&entry->list, head); | |
92 | ||
93 | return entry; | |
4b2414d0 CY |
94 | err_out: |
95 | iput(inode); | |
96 | return ERR_PTR(err); | |
3f8ab270 CY |
97 | } |
98 | ||
99 | static void del_fsync_inode(struct fsync_inode_entry *entry) | |
100 | { | |
101 | iput(entry->inode); | |
102 | list_del(&entry->list); | |
103 | kmem_cache_free(fsync_entry_slab, entry); | |
104 | } | |
105 | ||
f61cce5b CY |
106 | static int recover_dentry(struct inode *inode, struct page *ipage, |
107 | struct list_head *dir_list) | |
d624c96f | 108 | { |
58bfaf44 | 109 | struct f2fs_inode *raw_inode = F2FS_INODE(ipage); |
74d0b917 | 110 | nid_t pino = le32_to_cpu(raw_inode->i_pino); |
6b8213d9 | 111 | struct f2fs_dir_entry *de; |
e7ba108a | 112 | struct fscrypt_name fname; |
d624c96f | 113 | struct page *page; |
6b8213d9 | 114 | struct inode *dir, *einode; |
f61cce5b | 115 | struct fsync_inode_entry *entry; |
d624c96f | 116 | int err = 0; |
e7ba108a | 117 | char *name; |
d624c96f | 118 | |
f61cce5b CY |
119 | entry = get_fsync_inode(dir_list, pino); |
120 | if (!entry) { | |
4b2414d0 CY |
121 | entry = add_fsync_inode(F2FS_I_SB(inode), dir_list, |
122 | pino, false); | |
f4702d61 JK |
123 | if (IS_ERR(entry)) { |
124 | dir = ERR_CAST(entry); | |
125 | err = PTR_ERR(entry); | |
f61cce5b CY |
126 | goto out; |
127 | } | |
ed57c27f JK |
128 | } |
129 | ||
f61cce5b CY |
130 | dir = entry->inode; |
131 | ||
e7ba108a SL |
132 | memset(&fname, 0, sizeof(struct fscrypt_name)); |
133 | fname.disk_name.len = le32_to_cpu(raw_inode->i_namelen); | |
134 | fname.disk_name.name = raw_inode->i_name; | |
d96b1431 | 135 | |
e7ba108a | 136 | if (unlikely(fname.disk_name.len > F2FS_NAME_LEN)) { |
d96b1431 CY |
137 | WARN_ON(1); |
138 | err = -ENAMETOOLONG; | |
f61cce5b | 139 | goto out; |
d96b1431 | 140 | } |
6b8213d9 | 141 | retry: |
e7ba108a | 142 | de = __f2fs_find_entry(dir, &fname, &page); |
418f6c27 | 143 | if (de && inode->i_ino == le32_to_cpu(de->ino)) |
bdbc90fa | 144 | goto out_put; |
418f6c27 | 145 | |
6b8213d9 | 146 | if (de) { |
e8ea9b3d | 147 | einode = f2fs_iget_retry(inode->i_sb, le32_to_cpu(de->ino)); |
6b8213d9 JK |
148 | if (IS_ERR(einode)) { |
149 | WARN_ON(1); | |
5c1f9927 CY |
150 | err = PTR_ERR(einode); |
151 | if (err == -ENOENT) | |
6b8213d9 | 152 | err = -EEXIST; |
bdbc90fa | 153 | goto out_put; |
2e5558f4 | 154 | } |
4b2414d0 CY |
155 | |
156 | err = dquot_initialize(einode); | |
157 | if (err) { | |
158 | iput(einode); | |
bdbc90fa | 159 | goto out_put; |
4b2414d0 CY |
160 | } |
161 | ||
4d57b86d | 162 | err = f2fs_acquire_orphan_inode(F2FS_I_SB(inode)); |
2e5558f4 RK |
163 | if (err) { |
164 | iput(einode); | |
bdbc90fa | 165 | goto out_put; |
6b8213d9 | 166 | } |
dbeacf02 | 167 | f2fs_delete_entry(de, page, dir, einode); |
6b8213d9 JK |
168 | iput(einode); |
169 | goto retry; | |
91246c21 CY |
170 | } else if (IS_ERR(page)) { |
171 | err = PTR_ERR(page); | |
172 | } else { | |
4d57b86d | 173 | err = f2fs_add_dentry(dir, &fname, inode, |
91246c21 | 174 | inode->i_ino, inode->i_mode); |
d624c96f | 175 | } |
e8ea9b3d JK |
176 | if (err == -ENOMEM) |
177 | goto retry; | |
2e5558f4 RK |
178 | goto out; |
179 | ||
bdbc90fa | 180 | out_put: |
2e5558f4 | 181 | f2fs_put_page(page, 0); |
d624c96f | 182 | out: |
e7ba108a SL |
183 | if (file_enc_name(inode)) |
184 | name = "<encrypted>"; | |
185 | else | |
186 | name = raw_inode->i_name; | |
6c311ec6 CF |
187 | f2fs_msg(inode->i_sb, KERN_NOTICE, |
188 | "%s: ino = %x, name = %s, dir = %lx, err = %d", | |
e7ba108a | 189 | __func__, ino_of_node(ipage), name, |
f28c06fa | 190 | IS_ERR(dir) ? 0 : dir->i_ino, err); |
d624c96f JK |
191 | return err; |
192 | } | |
193 | ||
37a086f0 JK |
194 | static void recover_inline_flags(struct inode *inode, struct f2fs_inode *ri) |
195 | { | |
196 | if (ri->i_inline & F2FS_PIN_FILE) | |
197 | set_inode_flag(inode, FI_PIN_FILE); | |
198 | else | |
199 | clear_inode_flag(inode, FI_PIN_FILE); | |
200 | if (ri->i_inline & F2FS_DATA_EXIST) | |
201 | set_inode_flag(inode, FI_DATA_EXIST); | |
202 | else | |
203 | clear_inode_flag(inode, FI_DATA_EXIST); | |
37a086f0 JK |
204 | } |
205 | ||
c52e1b10 | 206 | static void recover_inode(struct inode *inode, struct page *page) |
d624c96f | 207 | { |
441ac5cb | 208 | struct f2fs_inode *raw = F2FS_INODE(page); |
e7d55452 | 209 | char *name; |
441ac5cb JK |
210 | |
211 | inode->i_mode = le16_to_cpu(raw->i_mode); | |
fc9581c8 | 212 | f2fs_i_size_write(inode, le64_to_cpu(raw->i_size)); |
9f0552e0 | 213 | inode->i_atime.tv_sec = le64_to_cpu(raw->i_atime); |
441ac5cb JK |
214 | inode->i_ctime.tv_sec = le64_to_cpu(raw->i_ctime); |
215 | inode->i_mtime.tv_sec = le64_to_cpu(raw->i_mtime); | |
9f0552e0 | 216 | inode->i_atime.tv_nsec = le32_to_cpu(raw->i_atime_nsec); |
441ac5cb JK |
217 | inode->i_ctime.tv_nsec = le32_to_cpu(raw->i_ctime_nsec); |
218 | inode->i_mtime.tv_nsec = le32_to_cpu(raw->i_mtime_nsec); | |
f356fe0c | 219 | |
26787236 JK |
220 | F2FS_I(inode)->i_advise = raw->i_advise; |
221 | ||
37a086f0 JK |
222 | recover_inline_flags(inode, raw); |
223 | ||
e7d55452 JK |
224 | if (file_enc_name(inode)) |
225 | name = "<encrypted>"; | |
226 | else | |
227 | name = F2FS_INODE(page)->i_name; | |
228 | ||
37a086f0 JK |
229 | f2fs_msg(inode->i_sb, KERN_NOTICE, |
230 | "recover_inode: ino = %x, name = %s, inline = %x", | |
231 | ino_of_node(page), name, raw->i_inline); | |
d624c96f JK |
232 | } |
233 | ||
d40d30c5 JK |
234 | static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head, |
235 | bool check_only) | |
d624c96f | 236 | { |
d624c96f | 237 | struct curseg_info *curseg; |
4c521f49 | 238 | struct page *page = NULL; |
d624c96f | 239 | block_t blkaddr; |
fb0e72c8 | 240 | unsigned int loop_cnt = 0; |
82902c06 CY |
241 | unsigned int free_blocks = MAIN_SEGS(sbi) * sbi->blocks_per_seg - |
242 | valid_user_blocks(sbi); | |
d624c96f JK |
243 | int err = 0; |
244 | ||
245 | /* get node pages in the current segment */ | |
246 | curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); | |
695fd1ed | 247 | blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
d624c96f | 248 | |
d624c96f JK |
249 | while (1) { |
250 | struct fsync_inode_entry *entry; | |
251 | ||
e1da7872 | 252 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, META_POR)) |
4c521f49 | 253 | return 0; |
d624c96f | 254 | |
4d57b86d | 255 | page = f2fs_get_tmp_page(sbi, blkaddr); |
7735730d CY |
256 | if (IS_ERR(page)) { |
257 | err = PTR_ERR(page); | |
258 | break; | |
259 | } | |
393ff91f | 260 | |
a468f0ef | 261 | if (!is_recoverable_dnode(page)) |
f356fe0c | 262 | break; |
d624c96f JK |
263 | |
264 | if (!is_fsync_dnode(page)) | |
265 | goto next; | |
266 | ||
267 | entry = get_fsync_inode(head, ino_of_node(page)); | |
d47b8715 | 268 | if (!entry) { |
4b2414d0 CY |
269 | bool quota_inode = false; |
270 | ||
d40d30c5 JK |
271 | if (!check_only && |
272 | IS_INODE(page) && is_dent_dnode(page)) { | |
4d57b86d | 273 | err = f2fs_recover_inode_page(sbi, page); |
6ead1142 | 274 | if (err) |
f356fe0c | 275 | break; |
4b2414d0 | 276 | quota_inode = true; |
d624c96f JK |
277 | } |
278 | ||
441ac5cb JK |
279 | /* |
280 | * CP | dnode(F) | inode(DF) | |
281 | * For this case, we should not give up now. | |
282 | */ | |
4b2414d0 CY |
283 | entry = add_fsync_inode(sbi, head, ino_of_node(page), |
284 | quota_inode); | |
f4702d61 JK |
285 | if (IS_ERR(entry)) { |
286 | err = PTR_ERR(entry); | |
8fbc418f JK |
287 | if (err == -ENOENT) { |
288 | err = 0; | |
441ac5cb | 289 | goto next; |
8fbc418f | 290 | } |
f356fe0c | 291 | break; |
d624c96f | 292 | } |
d624c96f | 293 | } |
addbe45b JK |
294 | entry->blkaddr = blkaddr; |
295 | ||
608514de JK |
296 | if (IS_INODE(page) && is_dent_dnode(page)) |
297 | entry->last_dentry = blkaddr; | |
d624c96f | 298 | next: |
fb0e72c8 CY |
299 | /* sanity check in order to detect looped node chain */ |
300 | if (++loop_cnt >= free_blocks || | |
301 | blkaddr == next_blkaddr_of_node(page)) { | |
302 | f2fs_msg(sbi->sb, KERN_NOTICE, | |
303 | "%s: detect looped node chain, " | |
304 | "blkaddr:%u, next:%u", | |
305 | __func__, blkaddr, next_blkaddr_of_node(page)); | |
306 | err = -EINVAL; | |
307 | break; | |
308 | } | |
309 | ||
d624c96f JK |
310 | /* check next segment */ |
311 | blkaddr = next_blkaddr_of_node(page); | |
4c521f49 | 312 | f2fs_put_page(page, 1); |
635aee1f | 313 | |
4d57b86d | 314 | f2fs_ra_meta_pages_cond(sbi, blkaddr); |
d624c96f | 315 | } |
4c521f49 | 316 | f2fs_put_page(page, 1); |
d624c96f JK |
317 | return err; |
318 | } | |
319 | ||
5ebefc5b | 320 | static void destroy_fsync_dnodes(struct list_head *head) |
d624c96f | 321 | { |
d8b79b2f DC |
322 | struct fsync_inode_entry *entry, *tmp; |
323 | ||
3f8ab270 CY |
324 | list_for_each_entry_safe(entry, tmp, head, list) |
325 | del_fsync_inode(entry); | |
d624c96f JK |
326 | } |
327 | ||
39cf72cf | 328 | static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi, |
b292dcab | 329 | block_t blkaddr, struct dnode_of_data *dn) |
d624c96f JK |
330 | { |
331 | struct seg_entry *sentry; | |
332 | unsigned int segno = GET_SEGNO(sbi, blkaddr); | |
491c0854 | 333 | unsigned short blkoff = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
f6517cfc | 334 | struct f2fs_summary_block *sum_node; |
d624c96f | 335 | struct f2fs_summary sum; |
f6517cfc | 336 | struct page *sum_page, *node_page; |
c9ef4810 | 337 | struct dnode_of_data tdn = *dn; |
b292dcab | 338 | nid_t ino, nid; |
d624c96f | 339 | struct inode *inode; |
de93653f | 340 | unsigned int offset; |
d624c96f JK |
341 | block_t bidx; |
342 | int i; | |
343 | ||
344 | sentry = get_seg_entry(sbi, segno); | |
345 | if (!f2fs_test_bit(blkoff, sentry->cur_valid_map)) | |
39cf72cf | 346 | return 0; |
d624c96f JK |
347 | |
348 | /* Get the previous summary */ | |
125c9fb1 | 349 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { |
d624c96f JK |
350 | struct curseg_info *curseg = CURSEG_I(sbi, i); |
351 | if (curseg->segno == segno) { | |
352 | sum = curseg->sum_blk->entries[blkoff]; | |
f6517cfc | 353 | goto got_it; |
d624c96f JK |
354 | } |
355 | } | |
d624c96f | 356 | |
4d57b86d | 357 | sum_page = f2fs_get_sum_page(sbi, segno); |
f6517cfc JK |
358 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); |
359 | sum = sum_node->entries[blkoff]; | |
360 | f2fs_put_page(sum_page, 1); | |
361 | got_it: | |
b292dcab JK |
362 | /* Use the locked dnode page and inode */ |
363 | nid = le32_to_cpu(sum.nid); | |
364 | if (dn->inode->i_ino == nid) { | |
b292dcab | 365 | tdn.nid = nid; |
c9ef4810 JK |
366 | if (!dn->inode_page_locked) |
367 | lock_page(dn->inode_page); | |
b292dcab | 368 | tdn.node_page = dn->inode_page; |
060dd67b | 369 | tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node); |
c9ef4810 | 370 | goto truncate_out; |
b292dcab | 371 | } else if (dn->nid == nid) { |
060dd67b | 372 | tdn.ofs_in_node = le16_to_cpu(sum.ofs_in_node); |
c9ef4810 | 373 | goto truncate_out; |
b292dcab JK |
374 | } |
375 | ||
d624c96f | 376 | /* Get the node page */ |
4d57b86d | 377 | node_page = f2fs_get_node_page(sbi, nid); |
39cf72cf JK |
378 | if (IS_ERR(node_page)) |
379 | return PTR_ERR(node_page); | |
de93653f JK |
380 | |
381 | offset = ofs_of_node(node_page); | |
d624c96f JK |
382 | ino = ino_of_node(node_page); |
383 | f2fs_put_page(node_page, 1); | |
384 | ||
60979115 | 385 | if (ino != dn->inode->i_ino) { |
4b2414d0 CY |
386 | int ret; |
387 | ||
60979115 | 388 | /* Deallocate previous index in the node page */ |
e8ea9b3d | 389 | inode = f2fs_iget_retry(sbi->sb, ino); |
60979115 JK |
390 | if (IS_ERR(inode)) |
391 | return PTR_ERR(inode); | |
4b2414d0 CY |
392 | |
393 | ret = dquot_initialize(inode); | |
394 | if (ret) { | |
395 | iput(inode); | |
396 | return ret; | |
397 | } | |
60979115 JK |
398 | } else { |
399 | inode = dn->inode; | |
400 | } | |
06025f4d | 401 | |
4d57b86d CY |
402 | bidx = f2fs_start_bidx_of_node(offset, inode) + |
403 | le16_to_cpu(sum.ofs_in_node); | |
de93653f | 404 | |
c9ef4810 JK |
405 | /* |
406 | * if inode page is locked, unlock temporarily, but its reference | |
407 | * count keeps alive. | |
408 | */ | |
409 | if (ino == dn->inode->i_ino && dn->inode_page_locked) | |
410 | unlock_page(dn->inode_page); | |
411 | ||
412 | set_new_dnode(&tdn, inode, NULL, NULL, 0); | |
4d57b86d | 413 | if (f2fs_get_dnode_of_data(&tdn, bidx, LOOKUP_NODE)) |
c9ef4810 JK |
414 | goto out; |
415 | ||
416 | if (tdn.data_blkaddr == blkaddr) | |
4d57b86d | 417 | f2fs_truncate_data_blocks_range(&tdn, 1); |
c9ef4810 JK |
418 | |
419 | f2fs_put_dnode(&tdn); | |
420 | out: | |
421 | if (ino != dn->inode->i_ino) | |
60979115 | 422 | iput(inode); |
c9ef4810 JK |
423 | else if (dn->inode_page_locked) |
424 | lock_page(dn->inode_page); | |
425 | return 0; | |
426 | ||
427 | truncate_out: | |
7a2af766 CY |
428 | if (datablock_addr(tdn.inode, tdn.node_page, |
429 | tdn.ofs_in_node) == blkaddr) | |
4d57b86d | 430 | f2fs_truncate_data_blocks_range(&tdn, 1); |
c9ef4810 JK |
431 | if (dn->inode->i_ino == nid && !dn->inode_page_locked) |
432 | unlock_page(dn->inode_page); | |
39cf72cf | 433 | return 0; |
d624c96f JK |
434 | } |
435 | ||
6ead1142 | 436 | static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, |
e17d488b | 437 | struct page *page) |
d624c96f | 438 | { |
d624c96f | 439 | struct dnode_of_data dn; |
d624c96f | 440 | struct node_info ni; |
81ca7350 | 441 | unsigned int start, end; |
f356fe0c | 442 | int err = 0, recovered = 0; |
d624c96f | 443 | |
1c35a90e JK |
444 | /* step 1: recover xattr */ |
445 | if (IS_INODE(page)) { | |
4d57b86d | 446 | f2fs_recover_inline_xattr(inode, page); |
1c35a90e | 447 | } else if (f2fs_has_xattr_block(ofs_of_node(page))) { |
4d57b86d | 448 | err = f2fs_recover_xattr_data(inode, page); |
d260081c CY |
449 | if (!err) |
450 | recovered++; | |
1e1bb4ba | 451 | goto out; |
1c35a90e | 452 | } |
1e1bb4ba | 453 | |
1c35a90e | 454 | /* step 2: recover inline data */ |
4d57b86d | 455 | if (f2fs_recover_inline_data(inode, page)) |
abb2366c JK |
456 | goto out; |
457 | ||
1c35a90e | 458 | /* step 3: recover data indices */ |
4d57b86d | 459 | start = f2fs_start_bidx_of_node(ofs_of_node(page), inode); |
81ca7350 | 460 | end = start + ADDRS_PER_PAGE(page, inode); |
d624c96f JK |
461 | |
462 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
e8ea9b3d | 463 | retry_dn: |
4d57b86d | 464 | err = f2fs_get_dnode_of_data(&dn, start, ALLOC_NODE); |
e8ea9b3d JK |
465 | if (err) { |
466 | if (err == -ENOMEM) { | |
467 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
468 | goto retry_dn; | |
469 | } | |
1e1bb4ba | 470 | goto out; |
e8ea9b3d | 471 | } |
d624c96f | 472 | |
fec1d657 | 473 | f2fs_wait_on_page_writeback(dn.node_page, NODE, true); |
d624c96f | 474 | |
7735730d CY |
475 | err = f2fs_get_node_info(sbi, dn.nid, &ni); |
476 | if (err) | |
477 | goto err; | |
478 | ||
9850cf4a JK |
479 | f2fs_bug_on(sbi, ni.ino != ino_of_node(page)); |
480 | f2fs_bug_on(sbi, ofs_of_node(dn.node_page) != ofs_of_node(page)); | |
d624c96f | 481 | |
12a8343e | 482 | for (; start < end; start++, dn.ofs_in_node++) { |
d624c96f JK |
483 | block_t src, dest; |
484 | ||
7a2af766 CY |
485 | src = datablock_addr(dn.inode, dn.node_page, dn.ofs_in_node); |
486 | dest = datablock_addr(dn.inode, page, dn.ofs_in_node); | |
d624c96f | 487 | |
12a8343e CY |
488 | /* skip recovering if dest is the same as src */ |
489 | if (src == dest) | |
490 | continue; | |
491 | ||
492 | /* dest is invalid, just invalidate src block */ | |
493 | if (dest == NULL_ADDR) { | |
4d57b86d | 494 | f2fs_truncate_data_blocks_range(&dn, 1); |
12a8343e CY |
495 | continue; |
496 | } | |
497 | ||
26787236 | 498 | if (!file_keep_isize(inode) && |
dba79f38 CY |
499 | (i_size_read(inode) <= ((loff_t)start << PAGE_SHIFT))) |
500 | f2fs_i_size_write(inode, | |
501 | (loff_t)(start + 1) << PAGE_SHIFT); | |
26de9b11 | 502 | |
12a8343e CY |
503 | /* |
504 | * dest is reserved block, invalidate src block | |
505 | * and then reserve one new block in dnode page. | |
506 | */ | |
507 | if (dest == NEW_ADDR) { | |
4d57b86d CY |
508 | f2fs_truncate_data_blocks_range(&dn, 1); |
509 | f2fs_reserve_new_block(&dn); | |
12a8343e CY |
510 | continue; |
511 | } | |
512 | ||
513 | /* dest is valid block, try to recover from src to dest */ | |
e1da7872 | 514 | if (f2fs_is_valid_blkaddr(sbi, dest, META_POR)) { |
e03b07d9 | 515 | |
d624c96f | 516 | if (src == NULL_ADDR) { |
4d57b86d | 517 | err = f2fs_reserve_new_block(&dn); |
7fa750a1 AB |
518 | while (err && |
519 | IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION)) | |
4d57b86d | 520 | err = f2fs_reserve_new_block(&dn); |
d624c96f | 521 | /* We should not get -ENOSPC */ |
9850cf4a | 522 | f2fs_bug_on(sbi, err); |
6f3ec995 JK |
523 | if (err) |
524 | goto err; | |
d624c96f | 525 | } |
e8ea9b3d | 526 | retry_prev: |
d624c96f | 527 | /* Check the previous node page having this index */ |
39cf72cf | 528 | err = check_index_in_prev_nodes(sbi, dest, &dn); |
e8ea9b3d JK |
529 | if (err) { |
530 | if (err == -ENOMEM) { | |
531 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
532 | goto retry_prev; | |
533 | } | |
39cf72cf | 534 | goto err; |
e8ea9b3d | 535 | } |
d624c96f | 536 | |
d624c96f | 537 | /* write dummy data page */ |
528e3459 | 538 | f2fs_replace_block(sbi, &dn, src, dest, |
28bc106b | 539 | ni.version, false, false); |
f356fe0c | 540 | recovered++; |
d624c96f | 541 | } |
d624c96f JK |
542 | } |
543 | ||
d624c96f JK |
544 | copy_node_footer(dn.node_page, page); |
545 | fill_node_footer(dn.node_page, dn.nid, ni.ino, | |
546 | ofs_of_node(page), false); | |
547 | set_page_dirty(dn.node_page); | |
39cf72cf | 548 | err: |
d624c96f | 549 | f2fs_put_dnode(&dn); |
1e1bb4ba | 550 | out: |
6c311ec6 | 551 | f2fs_msg(sbi->sb, KERN_NOTICE, |
26787236 JK |
552 | "recover_data: ino = %lx (i_size: %s) recovered = %d, err = %d", |
553 | inode->i_ino, | |
554 | file_keep_isize(inode) ? "keep" : "recover", | |
555 | recovered, err); | |
39cf72cf | 556 | return err; |
d624c96f JK |
557 | } |
558 | ||
f61cce5b CY |
559 | static int recover_data(struct f2fs_sb_info *sbi, struct list_head *inode_list, |
560 | struct list_head *dir_list) | |
d624c96f | 561 | { |
d624c96f | 562 | struct curseg_info *curseg; |
4c521f49 | 563 | struct page *page = NULL; |
6ead1142 | 564 | int err = 0; |
d624c96f JK |
565 | block_t blkaddr; |
566 | ||
567 | /* get node pages in the current segment */ | |
b7973f23 | 568 | curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); |
d624c96f JK |
569 | blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
570 | ||
d624c96f JK |
571 | while (1) { |
572 | struct fsync_inode_entry *entry; | |
573 | ||
e1da7872 | 574 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, META_POR)) |
4c521f49 | 575 | break; |
d624c96f | 576 | |
4d57b86d | 577 | f2fs_ra_meta_pages_cond(sbi, blkaddr); |
635aee1f | 578 | |
4d57b86d | 579 | page = f2fs_get_tmp_page(sbi, blkaddr); |
7735730d CY |
580 | if (IS_ERR(page)) { |
581 | err = PTR_ERR(page); | |
582 | break; | |
583 | } | |
393ff91f | 584 | |
a468f0ef | 585 | if (!is_recoverable_dnode(page)) { |
4c521f49 | 586 | f2fs_put_page(page, 1); |
45856aff | 587 | break; |
4c521f49 | 588 | } |
d624c96f | 589 | |
f61cce5b | 590 | entry = get_fsync_inode(inode_list, ino_of_node(page)); |
d624c96f JK |
591 | if (!entry) |
592 | goto next; | |
441ac5cb JK |
593 | /* |
594 | * inode(x) | CP | inode(x) | dnode(F) | |
595 | * In this case, we can lose the latest inode(x). | |
c52e1b10 | 596 | * So, call recover_inode for the inode update. |
441ac5cb | 597 | */ |
608514de | 598 | if (IS_INODE(page)) |
c52e1b10 JK |
599 | recover_inode(entry->inode, page); |
600 | if (entry->last_dentry == blkaddr) { | |
f61cce5b | 601 | err = recover_dentry(entry->inode, page, dir_list); |
c52e1b10 JK |
602 | if (err) { |
603 | f2fs_put_page(page, 1); | |
604 | break; | |
605 | } | |
606 | } | |
e17d488b | 607 | err = do_recover_data(sbi, entry->inode, page); |
4c521f49 JK |
608 | if (err) { |
609 | f2fs_put_page(page, 1); | |
45856aff | 610 | break; |
4c521f49 | 611 | } |
d624c96f | 612 | |
3f8ab270 CY |
613 | if (entry->blkaddr == blkaddr) |
614 | del_fsync_inode(entry); | |
d624c96f JK |
615 | next: |
616 | /* check next segment */ | |
617 | blkaddr = next_blkaddr_of_node(page); | |
4c521f49 | 618 | f2fs_put_page(page, 1); |
d624c96f | 619 | } |
6ead1142 | 620 | if (!err) |
4d57b86d | 621 | f2fs_allocate_new_segments(sbi); |
6ead1142 | 622 | return err; |
d624c96f JK |
623 | } |
624 | ||
4d57b86d | 625 | int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only) |
d624c96f JK |
626 | { |
627 | struct list_head inode_list; | |
f61cce5b | 628 | struct list_head dir_list; |
6ead1142 | 629 | int err; |
6781eabb | 630 | int ret = 0; |
4b2414d0 | 631 | unsigned long s_flags = sbi->sb->s_flags; |
aabe5136 | 632 | bool need_writecp = false; |
ea676733 JK |
633 | #ifdef CONFIG_QUOTA |
634 | int quota_enabled; | |
635 | #endif | |
d624c96f | 636 | |
1751e8a6 | 637 | if (s_flags & SB_RDONLY) { |
e6b0b159 YH |
638 | f2fs_msg(sbi->sb, KERN_INFO, |
639 | "recover fsync data on readonly fs"); | |
1751e8a6 | 640 | sbi->sb->s_flags &= ~SB_RDONLY; |
4b2414d0 CY |
641 | } |
642 | ||
643 | #ifdef CONFIG_QUOTA | |
644 | /* Needed for iput() to work correctly and not trash data */ | |
1751e8a6 | 645 | sbi->sb->s_flags |= SB_ACTIVE; |
4b2414d0 | 646 | /* Turn on quotas so that they are updated correctly */ |
1751e8a6 | 647 | quota_enabled = f2fs_enable_quota_files(sbi, s_flags & SB_RDONLY); |
4b2414d0 CY |
648 | #endif |
649 | ||
d624c96f | 650 | fsync_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_inode_entry", |
e8512d2e | 651 | sizeof(struct fsync_inode_entry)); |
4b2414d0 CY |
652 | if (!fsync_entry_slab) { |
653 | err = -ENOMEM; | |
654 | goto out; | |
655 | } | |
d624c96f JK |
656 | |
657 | INIT_LIST_HEAD(&inode_list); | |
f61cce5b | 658 | INIT_LIST_HEAD(&dir_list); |
d624c96f | 659 | |
14f4e690 JK |
660 | /* prevent checkpoint */ |
661 | mutex_lock(&sbi->cp_mutex); | |
662 | ||
315df839 | 663 | /* step #1: find fsynced inode numbers */ |
d40d30c5 | 664 | err = find_fsync_dnodes(sbi, &inode_list, check_only); |
6781eabb | 665 | if (err || list_empty(&inode_list)) |
4b2414d0 | 666 | goto skip; |
d624c96f | 667 | |
6781eabb JK |
668 | if (check_only) { |
669 | ret = 1; | |
4b2414d0 | 670 | goto skip; |
6781eabb | 671 | } |
d624c96f | 672 | |
aabe5136 | 673 | need_writecp = true; |
691c6fd2 | 674 | |
d624c96f | 675 | /* step #2: recover data */ |
f61cce5b | 676 | err = recover_data(sbi, &inode_list, &dir_list); |
b307384e | 677 | if (!err) |
9850cf4a | 678 | f2fs_bug_on(sbi, !list_empty(&inode_list)); |
4b2414d0 | 679 | skip: |
5ebefc5b | 680 | destroy_fsync_dnodes(&inode_list); |
cf2271e7 | 681 | |
4c521f49 JK |
682 | /* truncate meta pages to be used by the recovery */ |
683 | truncate_inode_pages_range(META_MAPPING(sbi), | |
09cbfeaf | 684 | (loff_t)MAIN_BLKADDR(sbi) << PAGE_SHIFT, -1); |
4c521f49 | 685 | |
cf2271e7 JK |
686 | if (err) { |
687 | truncate_inode_pages_final(NODE_MAPPING(sbi)); | |
688 | truncate_inode_pages_final(META_MAPPING(sbi)); | |
689 | } | |
690 | ||
caf0047e | 691 | clear_sbi_flag(sbi, SBI_POR_DOING); |
a468f0ef JK |
692 | mutex_unlock(&sbi->cp_mutex); |
693 | ||
9e1e6df4 JK |
694 | /* let's drop all the directory inodes for clean checkpoint */ |
695 | destroy_fsync_dnodes(&dir_list); | |
696 | ||
1378752b CY |
697 | if (need_writecp) { |
698 | set_sbi_flag(sbi, SBI_IS_RECOVERED); | |
699 | ||
700 | if (!err) { | |
701 | struct cp_control cpc = { | |
702 | .reason = CP_RECOVERY, | |
703 | }; | |
704 | err = f2fs_write_checkpoint(sbi, &cpc); | |
705 | } | |
cf2271e7 | 706 | } |
f61cce5b | 707 | |
f61cce5b | 708 | kmem_cache_destroy(fsync_entry_slab); |
4b2414d0 CY |
709 | out: |
710 | #ifdef CONFIG_QUOTA | |
711 | /* Turn quotas off */ | |
ea676733 JK |
712 | if (quota_enabled) |
713 | f2fs_quota_off_umount(sbi->sb); | |
4b2414d0 | 714 | #endif |
1751e8a6 | 715 | sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ |
4b2414d0 | 716 | |
6781eabb | 717 | return ret ? ret: err; |
d624c96f | 718 | } |