1 /*
2 * fs/f2fs/inode.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 <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
f2fs_mark_inode_dirty_sync(struct inode * inode,bool sync)23 void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
24 {
25 if (is_inode_flag_set(inode, FI_NEW_INODE))
26 return;
27
28 if (f2fs_inode_dirtied(inode, sync))
29 return;
30
31 mark_inode_dirty_sync(inode);
32 }
33
f2fs_set_inode_flags(struct inode * inode)34 void f2fs_set_inode_flags(struct inode *inode)
35 {
36 unsigned int flags = F2FS_I(inode)->i_flags;
37 unsigned int new_fl = 0;
38
39 if (flags & F2FS_SYNC_FL)
40 new_fl |= S_SYNC;
41 if (flags & F2FS_APPEND_FL)
42 new_fl |= S_APPEND;
43 if (flags & F2FS_IMMUTABLE_FL)
44 new_fl |= S_IMMUTABLE;
45 if (flags & F2FS_NOATIME_FL)
46 new_fl |= S_NOATIME;
47 if (flags & F2FS_DIRSYNC_FL)
48 new_fl |= S_DIRSYNC;
49 if (f2fs_encrypted_inode(inode))
50 new_fl |= S_ENCRYPTED;
51 inode_set_flags(inode, new_fl,
52 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
53 S_ENCRYPTED);
54 }
55
__get_inode_rdev(struct inode * inode,struct f2fs_inode * ri)56 static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
57 {
58 int extra_size = get_extra_isize(inode);
59
60 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
61 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
62 if (ri->i_addr[extra_size])
63 inode->i_rdev = old_decode_dev(
64 le32_to_cpu(ri->i_addr[extra_size]));
65 else
66 inode->i_rdev = new_decode_dev(
67 le32_to_cpu(ri->i_addr[extra_size + 1]));
68 }
69 }
70
__written_first_block(struct f2fs_sb_info * sbi,struct f2fs_inode * ri)71 static int __written_first_block(struct f2fs_sb_info *sbi,
72 struct f2fs_inode *ri)
73 {
74 block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);
75
76 if (!__is_valid_data_blkaddr(addr))
77 return 1;
78 if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC))
79 return -EFSCORRUPTED;
80 return 0;
81 }
82
__set_inode_rdev(struct inode * inode,struct f2fs_inode * ri)83 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
84 {
85 int extra_size = get_extra_isize(inode);
86
87 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
88 if (old_valid_dev(inode->i_rdev)) {
89 ri->i_addr[extra_size] =
90 cpu_to_le32(old_encode_dev(inode->i_rdev));
91 ri->i_addr[extra_size + 1] = 0;
92 } else {
93 ri->i_addr[extra_size] = 0;
94 ri->i_addr[extra_size + 1] =
95 cpu_to_le32(new_encode_dev(inode->i_rdev));
96 ri->i_addr[extra_size + 2] = 0;
97 }
98 }
99 }
100
__recover_inline_status(struct inode * inode,struct page * ipage)101 static void __recover_inline_status(struct inode *inode, struct page *ipage)
102 {
103 void *inline_data = inline_data_addr(inode, ipage);
104 __le32 *start = inline_data;
105 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
106
107 while (start < end) {
108 if (*start++) {
109 f2fs_wait_on_page_writeback(ipage, NODE, true);
110
111 set_inode_flag(inode, FI_DATA_EXIST);
112 set_raw_inline(inode, F2FS_INODE(ipage));
113 set_page_dirty(ipage);
114 return;
115 }
116 }
117 return;
118 }
119
f2fs_enable_inode_chksum(struct f2fs_sb_info * sbi,struct page * page)120 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
121 {
122 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
123
124 if (!f2fs_sb_has_inode_chksum(sbi->sb))
125 return false;
126
127 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))
128 return false;
129
130 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
131 i_inode_checksum))
132 return false;
133
134 return true;
135 }
136
f2fs_inode_chksum(struct f2fs_sb_info * sbi,struct page * page)137 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
138 {
139 struct f2fs_node *node = F2FS_NODE(page);
140 struct f2fs_inode *ri = &node->i;
141 __le32 ino = node->footer.ino;
142 __le32 gen = ri->i_generation;
143 __u32 chksum, chksum_seed;
144 __u32 dummy_cs = 0;
145 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
146 unsigned int cs_size = sizeof(dummy_cs);
147
148 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
149 sizeof(ino));
150 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
151
152 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
153 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
154 offset += cs_size;
155 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
156 F2FS_BLKSIZE - offset);
157 return chksum;
158 }
159
f2fs_inode_chksum_verify(struct f2fs_sb_info * sbi,struct page * page)160 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
161 {
162 struct f2fs_inode *ri;
163 __u32 provided, calculated;
164
165 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
166 return true;
167
168 #ifdef CONFIG_F2FS_CHECK_FS
169 if (!f2fs_enable_inode_chksum(sbi, page))
170 #else
171 if (!f2fs_enable_inode_chksum(sbi, page) ||
172 PageDirty(page) || PageWriteback(page))
173 #endif
174 return true;
175
176 ri = &F2FS_NODE(page)->i;
177 provided = le32_to_cpu(ri->i_inode_checksum);
178 calculated = f2fs_inode_chksum(sbi, page);
179
180 if (provided != calculated)
181 f2fs_msg(sbi->sb, KERN_WARNING,
182 "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
183 page->index, ino_of_node(page), provided, calculated);
184
185 return provided == calculated;
186 }
187
f2fs_inode_chksum_set(struct f2fs_sb_info * sbi,struct page * page)188 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
189 {
190 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
191
192 if (!f2fs_enable_inode_chksum(sbi, page))
193 return;
194
195 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
196 }
197
sanity_check_inode(struct inode * inode,struct page * node_page)198 static bool sanity_check_inode(struct inode *inode, struct page *node_page)
199 {
200 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
201 struct f2fs_inode_info *fi = F2FS_I(inode);
202 unsigned long long iblocks;
203
204 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
205 if (!iblocks) {
206 set_sbi_flag(sbi, SBI_NEED_FSCK);
207 f2fs_msg(sbi->sb, KERN_WARNING,
208 "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, "
209 "run fsck to fix.",
210 __func__, inode->i_ino, iblocks);
211 return false;
212 }
213
214 if (ino_of_node(node_page) != nid_of_node(node_page)) {
215 set_sbi_flag(sbi, SBI_NEED_FSCK);
216 f2fs_msg(sbi->sb, KERN_WARNING,
217 "%s: corrupted inode footer i_ino=%lx, ino,nid: "
218 "[%u, %u] run fsck to fix.",
219 __func__, inode->i_ino,
220 ino_of_node(node_page), nid_of_node(node_page));
221 return false;
222 }
223
224 if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)
225 && !f2fs_has_extra_attr(inode)) {
226 set_sbi_flag(sbi, SBI_NEED_FSCK);
227 f2fs_msg(sbi->sb, KERN_WARNING,
228 "%s: corrupted inode ino=%lx, run fsck to fix.",
229 __func__, inode->i_ino);
230 return false;
231 }
232
233 if (f2fs_has_extra_attr(inode) &&
234 !f2fs_sb_has_extra_attr(sbi->sb)) {
235 set_sbi_flag(sbi, SBI_NEED_FSCK);
236 f2fs_msg(sbi->sb, KERN_WARNING,
237 "%s: inode (ino=%lx) is with extra_attr, "
238 "but extra_attr feature is off",
239 __func__, inode->i_ino);
240 return false;
241 }
242
243 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
244 fi->i_extra_isize % sizeof(__le32)) {
245 set_sbi_flag(sbi, SBI_NEED_FSCK);
246 f2fs_msg(sbi->sb, KERN_WARNING,
247 "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, "
248 "max: %zu",
249 __func__, inode->i_ino, fi->i_extra_isize,
250 F2FS_TOTAL_EXTRA_ATTR_SIZE);
251 return false;
252 }
253
254 if (F2FS_I(inode)->extent_tree) {
255 struct extent_info *ei = &F2FS_I(inode)->extent_tree->largest;
256
257 if (ei->len &&
258 (!f2fs_is_valid_blkaddr(sbi, ei->blk, DATA_GENERIC) ||
259 !f2fs_is_valid_blkaddr(sbi, ei->blk + ei->len - 1,
260 DATA_GENERIC))) {
261 set_sbi_flag(sbi, SBI_NEED_FSCK);
262 f2fs_msg(sbi->sb, KERN_WARNING,
263 "%s: inode (ino=%lx) extent info [%u, %u, %u] "
264 "is incorrect, run fsck to fix",
265 __func__, inode->i_ino,
266 ei->blk, ei->fofs, ei->len);
267 return false;
268 }
269 }
270
271 if (f2fs_has_inline_data(inode) &&
272 (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))) {
273 set_sbi_flag(sbi, SBI_NEED_FSCK);
274 f2fs_msg(sbi->sb, KERN_WARNING,
275 "%s: inode (ino=%lx, mode=%u) should not have "
276 "inline_data, run fsck to fix",
277 __func__, inode->i_ino, inode->i_mode);
278 return false;
279 }
280
281 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
282 set_sbi_flag(sbi, SBI_NEED_FSCK);
283 f2fs_msg(sbi->sb, KERN_WARNING,
284 "%s: inode (ino=%lx, mode=%u) should not have "
285 "inline_dentry, run fsck to fix",
286 __func__, inode->i_ino, inode->i_mode);
287 return false;
288 }
289
290 return true;
291 }
292
do_read_inode(struct inode * inode)293 static int do_read_inode(struct inode *inode)
294 {
295 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
296 struct f2fs_inode_info *fi = F2FS_I(inode);
297 struct page *node_page;
298 struct f2fs_inode *ri;
299 projid_t i_projid;
300 int err;
301
302 /* Check if ino is within scope */
303 if (f2fs_check_nid_range(sbi, inode->i_ino))
304 return -EINVAL;
305
306 node_page = f2fs_get_node_page(sbi, inode->i_ino);
307 if (IS_ERR(node_page))
308 return PTR_ERR(node_page);
309
310 ri = F2FS_INODE(node_page);
311
312 inode->i_mode = le16_to_cpu(ri->i_mode);
313 i_uid_write(inode, le32_to_cpu(ri->i_uid));
314 i_gid_write(inode, le32_to_cpu(ri->i_gid));
315 set_nlink(inode, le32_to_cpu(ri->i_links));
316 inode->i_size = le64_to_cpu(ri->i_size);
317 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
318
319 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
320 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
321 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
322 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
323 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
324 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
325 inode->i_generation = le32_to_cpu(ri->i_generation);
326 if (S_ISDIR(inode->i_mode))
327 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
328 else if (S_ISREG(inode->i_mode))
329 fi->i_gc_failures[GC_FAILURE_PIN] =
330 le16_to_cpu(ri->i_gc_failures);
331 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
332 fi->i_flags = le32_to_cpu(ri->i_flags);
333 fi->flags = 0;
334 fi->i_advise = ri->i_advise;
335 fi->i_pino = le32_to_cpu(ri->i_pino);
336 fi->i_dir_level = ri->i_dir_level;
337
338 if (f2fs_init_extent_tree(inode, &ri->i_ext))
339 set_page_dirty(node_page);
340
341 get_inline_info(inode, ri);
342
343 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
344 le16_to_cpu(ri->i_extra_isize) : 0;
345
346 if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)) {
347 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
348 } else if (f2fs_has_inline_xattr(inode) ||
349 f2fs_has_inline_dentry(inode)) {
350 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
351 } else {
352
353 /*
354 * Previous inline data or directory always reserved 200 bytes
355 * in inode layout, even if inline_xattr is disabled. In order
356 * to keep inline_dentry's structure for backward compatibility,
357 * we get the space back only from inline_data.
358 */
359 fi->i_inline_xattr_size = 0;
360 }
361
362 if (!sanity_check_inode(inode, node_page)) {
363 f2fs_put_page(node_page, 1);
364 return -EFSCORRUPTED;
365 }
366
367 /* check data exist */
368 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
369 __recover_inline_status(inode, node_page);
370
371 /* try to recover cold bit for non-dir inode */
372 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
373 set_cold_node(node_page, false);
374 set_page_dirty(node_page);
375 }
376
377 /* get rdev by using inline_info */
378 __get_inode_rdev(inode, ri);
379
380 if (S_ISREG(inode->i_mode)) {
381 err = __written_first_block(sbi, ri);
382 if (err < 0) {
383 f2fs_put_page(node_page, 1);
384 return err;
385 }
386 if (!err)
387 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
388 }
389
390 if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
391 fi->last_disk_size = inode->i_size;
392
393 if (fi->i_flags & F2FS_PROJINHERIT_FL)
394 set_inode_flag(inode, FI_PROJ_INHERIT);
395
396 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi->sb) &&
397 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
398 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
399 else
400 i_projid = F2FS_DEF_PROJID;
401 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
402
403 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi->sb) &&
404 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
405 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
406 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
407 }
408
409 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
410 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
411 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
412 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
413 f2fs_put_page(node_page, 1);
414
415 stat_inc_inline_xattr(inode);
416 stat_inc_inline_inode(inode);
417 stat_inc_inline_dir(inode);
418
419 return 0;
420 }
421
f2fs_iget(struct super_block * sb,unsigned long ino)422 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
423 {
424 struct f2fs_sb_info *sbi = F2FS_SB(sb);
425 struct inode *inode;
426 int ret = 0;
427
428 inode = iget_locked(sb, ino);
429 if (!inode)
430 return ERR_PTR(-ENOMEM);
431
432 if (!(inode->i_state & I_NEW)) {
433 trace_f2fs_iget(inode);
434 return inode;
435 }
436 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
437 goto make_now;
438
439 ret = do_read_inode(inode);
440 if (ret)
441 goto bad_inode;
442 make_now:
443 if (ino == F2FS_NODE_INO(sbi)) {
444 inode->i_mapping->a_ops = &f2fs_node_aops;
445 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
446 } else if (ino == F2FS_META_INO(sbi)) {
447 inode->i_mapping->a_ops = &f2fs_meta_aops;
448 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
449 } else if (S_ISREG(inode->i_mode)) {
450 inode->i_op = &f2fs_file_inode_operations;
451 inode->i_fop = &f2fs_file_operations;
452 inode->i_mapping->a_ops = &f2fs_dblock_aops;
453 } else if (S_ISDIR(inode->i_mode)) {
454 inode->i_op = &f2fs_dir_inode_operations;
455 inode->i_fop = &f2fs_dir_operations;
456 inode->i_mapping->a_ops = &f2fs_dblock_aops;
457 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
458 } else if (S_ISLNK(inode->i_mode)) {
459 if (f2fs_encrypted_inode(inode))
460 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
461 else
462 inode->i_op = &f2fs_symlink_inode_operations;
463 inode_nohighmem(inode);
464 inode->i_mapping->a_ops = &f2fs_dblock_aops;
465 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
466 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
467 inode->i_op = &f2fs_special_inode_operations;
468 init_special_inode(inode, inode->i_mode, inode->i_rdev);
469 } else {
470 ret = -EIO;
471 goto bad_inode;
472 }
473 f2fs_set_inode_flags(inode);
474 unlock_new_inode(inode);
475 trace_f2fs_iget(inode);
476 return inode;
477
478 bad_inode:
479 f2fs_inode_synced(inode);
480 iget_failed(inode);
481 trace_f2fs_iget_exit(inode, ret);
482 return ERR_PTR(ret);
483 }
484
f2fs_iget_retry(struct super_block * sb,unsigned long ino)485 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
486 {
487 struct inode *inode;
488 retry:
489 inode = f2fs_iget(sb, ino);
490 if (IS_ERR(inode)) {
491 if (PTR_ERR(inode) == -ENOMEM) {
492 congestion_wait(BLK_RW_ASYNC, HZ/50);
493 goto retry;
494 }
495 }
496 return inode;
497 }
498
f2fs_update_inode(struct inode * inode,struct page * node_page)499 void f2fs_update_inode(struct inode *inode, struct page *node_page)
500 {
501 struct f2fs_inode *ri;
502 struct extent_tree *et = F2FS_I(inode)->extent_tree;
503
504 f2fs_wait_on_page_writeback(node_page, NODE, true);
505 set_page_dirty(node_page);
506
507 f2fs_inode_synced(inode);
508
509 ri = F2FS_INODE(node_page);
510
511 ri->i_mode = cpu_to_le16(inode->i_mode);
512 ri->i_advise = F2FS_I(inode)->i_advise;
513 ri->i_uid = cpu_to_le32(i_uid_read(inode));
514 ri->i_gid = cpu_to_le32(i_gid_read(inode));
515 ri->i_links = cpu_to_le32(inode->i_nlink);
516 ri->i_size = cpu_to_le64(i_size_read(inode));
517 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
518
519 if (et) {
520 read_lock(&et->lock);
521 set_raw_extent(&et->largest, &ri->i_ext);
522 read_unlock(&et->lock);
523 } else {
524 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
525 }
526 set_raw_inline(inode, ri);
527
528 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
529 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
530 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
531 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
532 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
533 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
534 if (S_ISDIR(inode->i_mode))
535 ri->i_current_depth =
536 cpu_to_le32(F2FS_I(inode)->i_current_depth);
537 else if (S_ISREG(inode->i_mode))
538 ri->i_gc_failures =
539 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
540 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
541 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
542 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
543 ri->i_generation = cpu_to_le32(inode->i_generation);
544 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
545
546 if (f2fs_has_extra_attr(inode)) {
547 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
548
549 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)->sb))
550 ri->i_inline_xattr_size =
551 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
552
553 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)->sb) &&
554 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
555 i_projid)) {
556 projid_t i_projid;
557
558 i_projid = from_kprojid(&init_user_ns,
559 F2FS_I(inode)->i_projid);
560 ri->i_projid = cpu_to_le32(i_projid);
561 }
562
563 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)->sb) &&
564 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
565 i_crtime)) {
566 ri->i_crtime =
567 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
568 ri->i_crtime_nsec =
569 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
570 }
571 }
572
573 __set_inode_rdev(inode, ri);
574
575 /* deleted inode */
576 if (inode->i_nlink == 0)
577 clear_inline_node(node_page);
578
579 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
580 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
581 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
582 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
583
584 #ifdef CONFIG_F2FS_CHECK_FS
585 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
586 #endif
587 }
588
f2fs_update_inode_page(struct inode * inode)589 void f2fs_update_inode_page(struct inode *inode)
590 {
591 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
592 struct page *node_page;
593 retry:
594 node_page = f2fs_get_node_page(sbi, inode->i_ino);
595 if (IS_ERR(node_page)) {
596 int err = PTR_ERR(node_page);
597 if (err == -ENOMEM) {
598 cond_resched();
599 goto retry;
600 } else if (err != -ENOENT) {
601 f2fs_stop_checkpoint(sbi, false);
602 }
603 return;
604 }
605 f2fs_update_inode(inode, node_page);
606 f2fs_put_page(node_page, 1);
607 }
608
f2fs_write_inode(struct inode * inode,struct writeback_control * wbc)609 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
610 {
611 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
612
613 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
614 inode->i_ino == F2FS_META_INO(sbi))
615 return 0;
616
617 /*
618 * atime could be updated without dirtying f2fs inode in lazytime mode
619 */
620 if (f2fs_is_time_consistent(inode) &&
621 !is_inode_flag_set(inode, FI_DIRTY_INODE))
622 return 0;
623
624 /*
625 * We need to balance fs here to prevent from producing dirty node pages
626 * during the urgent cleaning time when runing out of free sections.
627 */
628 f2fs_update_inode_page(inode);
629 if (wbc && wbc->nr_to_write)
630 f2fs_balance_fs(sbi, true);
631 return 0;
632 }
633
634 /*
635 * Called at the last iput() if i_nlink is zero
636 */
f2fs_evict_inode(struct inode * inode)637 void f2fs_evict_inode(struct inode *inode)
638 {
639 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
640 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
641 int err = 0;
642
643 /* some remained atomic pages should discarded */
644 if (f2fs_is_atomic_file(inode))
645 f2fs_drop_inmem_pages(inode);
646
647 trace_f2fs_evict_inode(inode);
648 truncate_inode_pages_final(&inode->i_data);
649
650 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
651 inode->i_ino == F2FS_META_INO(sbi))
652 goto out_clear;
653
654 f2fs_bug_on(sbi, get_dirty_pages(inode));
655 f2fs_remove_dirty_inode(inode);
656
657 f2fs_destroy_extent_tree(inode);
658
659 if (inode->i_nlink || is_bad_inode(inode))
660 goto no_delete;
661
662 dquot_initialize(inode);
663
664 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
665 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
666 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
667
668 sb_start_intwrite(inode->i_sb);
669 set_inode_flag(inode, FI_NO_ALLOC);
670 i_size_write(inode, 0);
671 retry:
672 if (F2FS_HAS_BLOCKS(inode))
673 err = f2fs_truncate(inode);
674
675 if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
676 f2fs_show_injection_info(FAULT_EVICT_INODE);
677 err = -EIO;
678 }
679
680 if (!err) {
681 f2fs_lock_op(sbi);
682 err = f2fs_remove_inode_page(inode);
683 f2fs_unlock_op(sbi);
684 if (err == -ENOENT)
685 err = 0;
686 }
687
688 /* give more chances, if ENOMEM case */
689 if (err == -ENOMEM) {
690 err = 0;
691 goto retry;
692 }
693
694 if (err)
695 f2fs_update_inode_page(inode);
696 dquot_free_inode(inode);
697 sb_end_intwrite(inode->i_sb);
698 no_delete:
699 dquot_drop(inode);
700
701 stat_dec_inline_xattr(inode);
702 stat_dec_inline_dir(inode);
703 stat_dec_inline_inode(inode);
704
705 if (likely(!is_set_ckpt_flags(sbi, CP_ERROR_FLAG)))
706 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
707 else
708 f2fs_inode_synced(inode);
709
710 /* ino == 0, if f2fs_new_inode() was failed t*/
711 if (inode->i_ino)
712 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
713 inode->i_ino);
714 if (xnid)
715 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
716 if (inode->i_nlink) {
717 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
718 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
719 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
720 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
721 }
722 if (is_inode_flag_set(inode, FI_FREE_NID)) {
723 f2fs_alloc_nid_failed(sbi, inode->i_ino);
724 clear_inode_flag(inode, FI_FREE_NID);
725 } else {
726 /*
727 * If xattr nid is corrupted, we can reach out error condition,
728 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
729 * In that case, f2fs_check_nid_range() is enough to give a clue.
730 */
731 }
732 out_clear:
733 fscrypt_put_encryption_info(inode);
734 clear_inode(inode);
735 }
736
737 /* caller should call f2fs_lock_op() */
f2fs_handle_failed_inode(struct inode * inode)738 void f2fs_handle_failed_inode(struct inode *inode)
739 {
740 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
741 struct node_info ni;
742 int err;
743
744 /*
745 * clear nlink of inode in order to release resource of inode
746 * immediately.
747 */
748 clear_nlink(inode);
749
750 /*
751 * we must call this to avoid inode being remained as dirty, resulting
752 * in a panic when flushing dirty inodes in gdirty_list.
753 */
754 f2fs_update_inode_page(inode);
755 f2fs_inode_synced(inode);
756
757 /* don't make bad inode, since it becomes a regular file. */
758 unlock_new_inode(inode);
759
760 /*
761 * Note: we should add inode to orphan list before f2fs_unlock_op()
762 * so we can prevent losing this orphan when encoutering checkpoint
763 * and following suddenly power-off.
764 */
765 err = f2fs_get_node_info(sbi, inode->i_ino, &ni);
766 if (err) {
767 set_sbi_flag(sbi, SBI_NEED_FSCK);
768 f2fs_msg(sbi->sb, KERN_WARNING,
769 "May loss orphan inode, run fsck to fix.");
770 goto out;
771 }
772
773 if (ni.blk_addr != NULL_ADDR) {
774 err = f2fs_acquire_orphan_inode(sbi);
775 if (err) {
776 set_sbi_flag(sbi, SBI_NEED_FSCK);
777 f2fs_msg(sbi->sb, KERN_WARNING,
778 "Too many orphan inodes, run fsck to fix.");
779 } else {
780 f2fs_add_orphan_inode(inode);
781 }
782 f2fs_alloc_nid_done(sbi, inode->i_ino);
783 } else {
784 set_inode_flag(inode, FI_FREE_NID);
785 }
786
787 out:
788 f2fs_unlock_op(sbi);
789
790 /* iput will drop the inode object */
791 iput(inode);
792 }
793