1
2
3
4
5
6
7
8
9
10
11#include <linux/fs.h>
12#include <linux/f2fs_fs.h>
13#include <linux/buffer_head.h>
14#include <linux/backing-dev.h>
15#include <linux/writeback.h>
16
17#include "f2fs.h"
18#include "node.h"
19#include "segment.h"
20
21#include <trace/events/f2fs.h>
22
23void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
24{
25 if (f2fs_inode_dirtied(inode, sync))
26 return;
27
28 mark_inode_dirty_sync(inode);
29}
30
31void f2fs_set_inode_flags(struct inode *inode)
32{
33 unsigned int flags = F2FS_I(inode)->i_flags;
34 unsigned int new_fl = 0;
35
36 if (flags & FS_SYNC_FL)
37 new_fl |= S_SYNC;
38 if (flags & FS_APPEND_FL)
39 new_fl |= S_APPEND;
40 if (flags & FS_IMMUTABLE_FL)
41 new_fl |= S_IMMUTABLE;
42 if (flags & FS_NOATIME_FL)
43 new_fl |= S_NOATIME;
44 if (flags & FS_DIRSYNC_FL)
45 new_fl |= S_DIRSYNC;
46 if (f2fs_encrypted_inode(inode))
47 new_fl |= S_ENCRYPTED;
48 inode_set_flags(inode, new_fl,
49 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
50 S_ENCRYPTED);
51}
52
53static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
54{
55 int extra_size = get_extra_isize(inode);
56
57 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
58 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
59 if (ri->i_addr[extra_size])
60 inode->i_rdev = old_decode_dev(
61 le32_to_cpu(ri->i_addr[extra_size]));
62 else
63 inode->i_rdev = new_decode_dev(
64 le32_to_cpu(ri->i_addr[extra_size + 1]));
65 }
66}
67
68static bool __written_first_block(struct f2fs_inode *ri)
69{
70 block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);
71
72 if (addr != NEW_ADDR && addr != NULL_ADDR)
73 return true;
74 return false;
75}
76
77static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
78{
79 int extra_size = get_extra_isize(inode);
80
81 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
82 if (old_valid_dev(inode->i_rdev)) {
83 ri->i_addr[extra_size] =
84 cpu_to_le32(old_encode_dev(inode->i_rdev));
85 ri->i_addr[extra_size + 1] = 0;
86 } else {
87 ri->i_addr[extra_size] = 0;
88 ri->i_addr[extra_size + 1] =
89 cpu_to_le32(new_encode_dev(inode->i_rdev));
90 ri->i_addr[extra_size + 2] = 0;
91 }
92 }
93}
94
95static void __recover_inline_status(struct inode *inode, struct page *ipage)
96{
97 void *inline_data = inline_data_addr(inode, ipage);
98 __le32 *start = inline_data;
99 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
100
101 while (start < end) {
102 if (*start++) {
103 f2fs_wait_on_page_writeback(ipage, NODE, true);
104
105 set_inode_flag(inode, FI_DATA_EXIST);
106 set_raw_inline(inode, F2FS_INODE(ipage));
107 set_page_dirty(ipage);
108 return;
109 }
110 }
111 return;
112}
113
114static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
115{
116 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
117 int extra_isize = le32_to_cpu(ri->i_extra_isize);
118
119 if (!f2fs_sb_has_inode_chksum(sbi->sb))
120 return false;
121
122 if (!RAW_IS_INODE(F2FS_NODE(page)) || !(ri->i_inline & F2FS_EXTRA_ATTR))
123 return false;
124
125 if (!F2FS_FITS_IN_INODE(ri, extra_isize, i_inode_checksum))
126 return false;
127
128 return true;
129}
130
131static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
132{
133 struct f2fs_node *node = F2FS_NODE(page);
134 struct f2fs_inode *ri = &node->i;
135 __le32 ino = node->footer.ino;
136 __le32 gen = ri->i_generation;
137 __u32 chksum, chksum_seed;
138 __u32 dummy_cs = 0;
139 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
140 unsigned int cs_size = sizeof(dummy_cs);
141
142 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
143 sizeof(ino));
144 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
145
146 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
147 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
148 offset += cs_size;
149 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
150 F2FS_BLKSIZE - offset);
151 return chksum;
152}
153
154bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
155{
156 struct f2fs_inode *ri;
157 __u32 provided, calculated;
158
159 if (!f2fs_enable_inode_chksum(sbi, page) ||
160 PageDirty(page) || PageWriteback(page))
161 return true;
162
163 ri = &F2FS_NODE(page)->i;
164 provided = le32_to_cpu(ri->i_inode_checksum);
165 calculated = f2fs_inode_chksum(sbi, page);
166
167 if (provided != calculated)
168 f2fs_msg(sbi->sb, KERN_WARNING,
169 "checksum invalid, ino = %x, %x vs. %x",
170 ino_of_node(page), provided, calculated);
171
172 return provided == calculated;
173}
174
175void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
176{
177 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
178
179 if (!f2fs_enable_inode_chksum(sbi, page))
180 return;
181
182 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
183}
184
185static int do_read_inode(struct inode *inode)
186{
187 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
188 struct f2fs_inode_info *fi = F2FS_I(inode);
189 struct page *node_page;
190 struct f2fs_inode *ri;
191 projid_t i_projid;
192
193
194 if (check_nid_range(sbi, inode->i_ino)) {
195 f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
196 (unsigned long) inode->i_ino);
197 WARN_ON(1);
198 return -EINVAL;
199 }
200
201 node_page = get_node_page(sbi, inode->i_ino);
202 if (IS_ERR(node_page))
203 return PTR_ERR(node_page);
204
205 ri = F2FS_INODE(node_page);
206
207 inode->i_mode = le16_to_cpu(ri->i_mode);
208 i_uid_write(inode, le32_to_cpu(ri->i_uid));
209 i_gid_write(inode, le32_to_cpu(ri->i_gid));
210 set_nlink(inode, le32_to_cpu(ri->i_links));
211 inode->i_size = le64_to_cpu(ri->i_size);
212 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
213
214 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
215 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
216 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
217 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
218 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
219 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
220 inode->i_generation = le32_to_cpu(ri->i_generation);
221
222 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
223 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
224 fi->i_flags = le32_to_cpu(ri->i_flags);
225 fi->flags = 0;
226 fi->i_advise = ri->i_advise;
227 fi->i_pino = le32_to_cpu(ri->i_pino);
228 fi->i_dir_level = ri->i_dir_level;
229
230 if (f2fs_init_extent_tree(inode, &ri->i_ext))
231 set_page_dirty(node_page);
232
233 get_inline_info(inode, ri);
234
235 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
236 le16_to_cpu(ri->i_extra_isize) : 0;
237
238 if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)) {
239 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
240 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
241 } else if (f2fs_has_inline_xattr(inode) ||
242 f2fs_has_inline_dentry(inode)) {
243 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
244 } else {
245
246
247
248
249
250
251
252 fi->i_inline_xattr_size = 0;
253 }
254
255
256 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
257 __recover_inline_status(inode, node_page);
258
259
260 __get_inode_rdev(inode, ri);
261
262 if (__written_first_block(ri))
263 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
264
265 if (!need_inode_block_update(sbi, inode->i_ino))
266 fi->last_disk_size = inode->i_size;
267
268 if (fi->i_flags & FS_PROJINHERIT_FL)
269 set_inode_flag(inode, FI_PROJ_INHERIT);
270
271 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi->sb) &&
272 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
273 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
274 else
275 i_projid = F2FS_DEF_PROJID;
276 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
277
278 f2fs_put_page(node_page, 1);
279
280 stat_inc_inline_xattr(inode);
281 stat_inc_inline_inode(inode);
282 stat_inc_inline_dir(inode);
283
284 return 0;
285}
286
287struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
288{
289 struct f2fs_sb_info *sbi = F2FS_SB(sb);
290 struct inode *inode;
291 int ret = 0;
292
293 inode = iget_locked(sb, ino);
294 if (!inode)
295 return ERR_PTR(-ENOMEM);
296
297 if (!(inode->i_state & I_NEW)) {
298 trace_f2fs_iget(inode);
299 return inode;
300 }
301 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
302 goto make_now;
303
304 ret = do_read_inode(inode);
305 if (ret)
306 goto bad_inode;
307make_now:
308 if (ino == F2FS_NODE_INO(sbi)) {
309 inode->i_mapping->a_ops = &f2fs_node_aops;
310 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
311 } else if (ino == F2FS_META_INO(sbi)) {
312 inode->i_mapping->a_ops = &f2fs_meta_aops;
313 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
314 } else if (S_ISREG(inode->i_mode)) {
315 inode->i_op = &f2fs_file_inode_operations;
316 inode->i_fop = &f2fs_file_operations;
317 inode->i_mapping->a_ops = &f2fs_dblock_aops;
318 } else if (S_ISDIR(inode->i_mode)) {
319 inode->i_op = &f2fs_dir_inode_operations;
320 inode->i_fop = &f2fs_dir_operations;
321 inode->i_mapping->a_ops = &f2fs_dblock_aops;
322 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
323 } else if (S_ISLNK(inode->i_mode)) {
324 if (f2fs_encrypted_inode(inode))
325 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
326 else
327 inode->i_op = &f2fs_symlink_inode_operations;
328 inode_nohighmem(inode);
329 inode->i_mapping->a_ops = &f2fs_dblock_aops;
330 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
331 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
332 inode->i_op = &f2fs_special_inode_operations;
333 init_special_inode(inode, inode->i_mode, inode->i_rdev);
334 } else {
335 ret = -EIO;
336 goto bad_inode;
337 }
338 f2fs_set_inode_flags(inode);
339 unlock_new_inode(inode);
340 trace_f2fs_iget(inode);
341 return inode;
342
343bad_inode:
344 iget_failed(inode);
345 trace_f2fs_iget_exit(inode, ret);
346 return ERR_PTR(ret);
347}
348
349struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
350{
351 struct inode *inode;
352retry:
353 inode = f2fs_iget(sb, ino);
354 if (IS_ERR(inode)) {
355 if (PTR_ERR(inode) == -ENOMEM) {
356 congestion_wait(BLK_RW_ASYNC, HZ/50);
357 goto retry;
358 }
359 }
360 return inode;
361}
362
363int update_inode(struct inode *inode, struct page *node_page)
364{
365 struct f2fs_inode *ri;
366 struct extent_tree *et = F2FS_I(inode)->extent_tree;
367
368 f2fs_inode_synced(inode);
369
370 f2fs_wait_on_page_writeback(node_page, NODE, true);
371
372 ri = F2FS_INODE(node_page);
373
374 ri->i_mode = cpu_to_le16(inode->i_mode);
375 ri->i_advise = F2FS_I(inode)->i_advise;
376 ri->i_uid = cpu_to_le32(i_uid_read(inode));
377 ri->i_gid = cpu_to_le32(i_gid_read(inode));
378 ri->i_links = cpu_to_le32(inode->i_nlink);
379 ri->i_size = cpu_to_le64(i_size_read(inode));
380 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
381
382 if (et) {
383 read_lock(&et->lock);
384 set_raw_extent(&et->largest, &ri->i_ext);
385 read_unlock(&et->lock);
386 } else {
387 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
388 }
389 set_raw_inline(inode, ri);
390
391 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
392 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
393 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
394 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
395 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
396 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
397 ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
398 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
399 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
400 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
401 ri->i_generation = cpu_to_le32(inode->i_generation);
402 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
403
404 if (f2fs_has_extra_attr(inode)) {
405 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
406
407 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)->sb))
408 ri->i_inline_xattr_size =
409 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
410
411 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)->sb) &&
412 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
413 i_projid)) {
414 projid_t i_projid;
415
416 i_projid = from_kprojid(&init_user_ns,
417 F2FS_I(inode)->i_projid);
418 ri->i_projid = cpu_to_le32(i_projid);
419 }
420 }
421
422 __set_inode_rdev(inode, ri);
423 set_cold_node(inode, node_page);
424
425
426 if (inode->i_nlink == 0)
427 clear_inline_node(node_page);
428
429 return set_page_dirty(node_page);
430}
431
432int update_inode_page(struct inode *inode)
433{
434 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
435 struct page *node_page;
436 int ret = 0;
437retry:
438 node_page = get_node_page(sbi, inode->i_ino);
439 if (IS_ERR(node_page)) {
440 int err = PTR_ERR(node_page);
441 if (err == -ENOMEM) {
442 cond_resched();
443 goto retry;
444 } else if (err != -ENOENT) {
445 f2fs_stop_checkpoint(sbi, false);
446 }
447 return 0;
448 }
449 ret = update_inode(inode, node_page);
450 f2fs_put_page(node_page, 1);
451 return ret;
452}
453
454int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
455{
456 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
457
458 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
459 inode->i_ino == F2FS_META_INO(sbi))
460 return 0;
461
462 if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
463 return 0;
464
465
466
467
468
469 update_inode_page(inode);
470 if (wbc && wbc->nr_to_write)
471 f2fs_balance_fs(sbi, true);
472 return 0;
473}
474
475
476
477
478void f2fs_evict_inode(struct inode *inode)
479{
480 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
481 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
482 int err = 0;
483
484
485 if (f2fs_is_atomic_file(inode))
486 drop_inmem_pages(inode);
487
488 trace_f2fs_evict_inode(inode);
489 truncate_inode_pages_final(&inode->i_data);
490
491 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
492 inode->i_ino == F2FS_META_INO(sbi))
493 goto out_clear;
494
495 f2fs_bug_on(sbi, get_dirty_pages(inode));
496 remove_dirty_inode(inode);
497
498 f2fs_destroy_extent_tree(inode);
499
500 if (inode->i_nlink || is_bad_inode(inode))
501 goto no_delete;
502
503 dquot_initialize(inode);
504
505 remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
506 remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
507 remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
508
509 sb_start_intwrite(inode->i_sb);
510 set_inode_flag(inode, FI_NO_ALLOC);
511 i_size_write(inode, 0);
512retry:
513 if (F2FS_HAS_BLOCKS(inode))
514 err = f2fs_truncate(inode);
515
516#ifdef CONFIG_F2FS_FAULT_INJECTION
517 if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
518 f2fs_show_injection_info(FAULT_EVICT_INODE);
519 err = -EIO;
520 }
521#endif
522 if (!err) {
523 f2fs_lock_op(sbi);
524 err = remove_inode_page(inode);
525 f2fs_unlock_op(sbi);
526 if (err == -ENOENT)
527 err = 0;
528 }
529
530
531 if (err == -ENOMEM) {
532 err = 0;
533 goto retry;
534 }
535
536 if (err)
537 update_inode_page(inode);
538 dquot_free_inode(inode);
539 sb_end_intwrite(inode->i_sb);
540no_delete:
541 dquot_drop(inode);
542
543 stat_dec_inline_xattr(inode);
544 stat_dec_inline_dir(inode);
545 stat_dec_inline_inode(inode);
546
547 if (likely(!is_set_ckpt_flags(sbi, CP_ERROR_FLAG)))
548 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
549 else
550 f2fs_inode_synced(inode);
551
552
553 if (inode->i_ino)
554 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
555 inode->i_ino);
556 if (xnid)
557 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
558 if (inode->i_nlink) {
559 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
560 add_ino_entry(sbi, inode->i_ino, APPEND_INO);
561 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
562 add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
563 }
564 if (is_inode_flag_set(inode, FI_FREE_NID)) {
565 alloc_nid_failed(sbi, inode->i_ino);
566 clear_inode_flag(inode, FI_FREE_NID);
567 } else {
568 f2fs_bug_on(sbi, err &&
569 !exist_written_data(sbi, inode->i_ino, ORPHAN_INO));
570 }
571out_clear:
572 fscrypt_put_encryption_info(inode, NULL);
573 clear_inode(inode);
574}
575
576
577void handle_failed_inode(struct inode *inode)
578{
579 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
580 struct node_info ni;
581
582
583
584
585
586 clear_nlink(inode);
587
588
589
590
591
592 update_inode_page(inode);
593 f2fs_inode_synced(inode);
594
595
596 unlock_new_inode(inode);
597
598
599
600
601
602
603 get_node_info(sbi, inode->i_ino, &ni);
604
605 if (ni.blk_addr != NULL_ADDR) {
606 int err = acquire_orphan_inode(sbi);
607 if (err) {
608 set_sbi_flag(sbi, SBI_NEED_FSCK);
609 f2fs_msg(sbi->sb, KERN_WARNING,
610 "Too many orphan inodes, run fsck to fix.");
611 } else {
612 add_orphan_inode(inode);
613 }
614 alloc_nid_done(sbi, inode->i_ino);
615 } else {
616 set_inode_flag(inode, FI_FREE_NID);
617 }
618
619 f2fs_unlock_op(sbi);
620
621
622 iput(inode);
623}
624
