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24#include <linux/buffer_head.h>
25#include <linux/mpage.h>
26#include <linux/writeback.h>
27#include <linux/uio.h>
28#include "nilfs.h"
29#include "segment.h"
30#include "page.h"
31#include "mdt.h"
32#include "cpfile.h"
33#include "ifile.h"
34
35
36
37
38
39
40
41
42
43
44
45
46
47int nilfs_get_block(struct inode *inode, sector_t blkoff,
48 struct buffer_head *bh_result, int create)
49{
50 struct nilfs_inode_info *ii = NILFS_I(inode);
51 __u64 blknum = 0;
52 int err = 0, ret;
53 struct inode *dat = nilfs_dat_inode(NILFS_I_NILFS(inode));
54 unsigned maxblocks = bh_result->b_size >> inode->i_blkbits;
55
56 down_read(&NILFS_MDT(dat)->mi_sem);
57 ret = nilfs_bmap_lookup_contig(ii->i_bmap, blkoff, &blknum, maxblocks);
58 up_read(&NILFS_MDT(dat)->mi_sem);
59 if (ret >= 0) {
60 map_bh(bh_result, inode->i_sb, blknum);
61 if (ret > 0)
62 bh_result->b_size = (ret << inode->i_blkbits);
63 goto out;
64 }
65
66 if (ret == -ENOENT && create) {
67 struct nilfs_transaction_info ti;
68
69 bh_result->b_blocknr = 0;
70 err = nilfs_transaction_begin(inode->i_sb, &ti, 1);
71 if (unlikely(err))
72 goto out;
73 err = nilfs_bmap_insert(ii->i_bmap, (unsigned long)blkoff,
74 (unsigned long)bh_result);
75 if (unlikely(err != 0)) {
76 if (err == -EEXIST) {
77
78
79
80
81
82
83 printk(KERN_WARNING
84 "nilfs_get_block: a race condition "
85 "while inserting a data block. "
86 "(inode number=%lu, file block "
87 "offset=%llu)\n",
88 inode->i_ino,
89 (unsigned long long)blkoff);
90 err = 0;
91 } else if (err == -EINVAL) {
92 nilfs_error(inode->i_sb, __func__,
93 "broken bmap (inode=%lu)\n",
94 inode->i_ino);
95 err = -EIO;
96 }
97 nilfs_transaction_abort(inode->i_sb);
98 goto out;
99 }
100 nilfs_transaction_commit(inode->i_sb);
101
102 set_buffer_new(bh_result);
103 map_bh(bh_result, inode->i_sb, 0);
104
105 } else if (ret == -ENOENT) {
106
107
108 ;
109 } else {
110 err = ret;
111 }
112
113 out:
114 return err;
115}
116
117
118
119
120
121
122
123static int nilfs_readpage(struct file *file, struct page *page)
124{
125 return mpage_readpage(page, nilfs_get_block);
126}
127
128
129
130
131
132
133
134
135
136static int nilfs_readpages(struct file *file, struct address_space *mapping,
137 struct list_head *pages, unsigned nr_pages)
138{
139 return mpage_readpages(mapping, pages, nr_pages, nilfs_get_block);
140}
141
142static int nilfs_writepages(struct address_space *mapping,
143 struct writeback_control *wbc)
144{
145 struct inode *inode = mapping->host;
146 int err = 0;
147
148 if (wbc->sync_mode == WB_SYNC_ALL)
149 err = nilfs_construct_dsync_segment(inode->i_sb, inode,
150 wbc->range_start,
151 wbc->range_end);
152 return err;
153}
154
155static int nilfs_writepage(struct page *page, struct writeback_control *wbc)
156{
157 struct inode *inode = page->mapping->host;
158 int err;
159
160 redirty_page_for_writepage(wbc, page);
161 unlock_page(page);
162
163 if (wbc->sync_mode == WB_SYNC_ALL) {
164 err = nilfs_construct_segment(inode->i_sb);
165 if (unlikely(err))
166 return err;
167 } else if (wbc->for_reclaim)
168 nilfs_flush_segment(inode->i_sb, inode->i_ino);
169
170 return 0;
171}
172
173static int nilfs_set_page_dirty(struct page *page)
174{
175 int ret = __set_page_dirty_buffers(page);
176
177 if (ret) {
178 struct inode *inode = page->mapping->host;
179 struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb);
180 unsigned nr_dirty = 1 << (PAGE_SHIFT - inode->i_blkbits);
181
182 nilfs_set_file_dirty(sbi, inode, nr_dirty);
183 }
184 return ret;
185}
186
187static int nilfs_write_begin(struct file *file, struct address_space *mapping,
188 loff_t pos, unsigned len, unsigned flags,
189 struct page **pagep, void **fsdata)
190
191{
192 struct inode *inode = mapping->host;
193 int err = nilfs_transaction_begin(inode->i_sb, NULL, 1);
194
195 if (unlikely(err))
196 return err;
197
198 *pagep = NULL;
199 err = block_write_begin(file, mapping, pos, len, flags, pagep,
200 fsdata, nilfs_get_block);
201 if (unlikely(err))
202 nilfs_transaction_abort(inode->i_sb);
203 return err;
204}
205
206static int nilfs_write_end(struct file *file, struct address_space *mapping,
207 loff_t pos, unsigned len, unsigned copied,
208 struct page *page, void *fsdata)
209{
210 struct inode *inode = mapping->host;
211 unsigned start = pos & (PAGE_CACHE_SIZE - 1);
212 unsigned nr_dirty;
213 int err;
214
215 nr_dirty = nilfs_page_count_clean_buffers(page, start,
216 start + copied);
217 copied = generic_write_end(file, mapping, pos, len, copied, page,
218 fsdata);
219 nilfs_set_file_dirty(NILFS_SB(inode->i_sb), inode, nr_dirty);
220 err = nilfs_transaction_commit(inode->i_sb);
221 return err ? : copied;
222}
223
224static ssize_t
225nilfs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
226 loff_t offset, unsigned long nr_segs)
227{
228 struct file *file = iocb->ki_filp;
229 struct inode *inode = file->f_mapping->host;
230 ssize_t size;
231
232 if (rw == WRITE)
233 return 0;
234
235
236 size = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
237 offset, nr_segs, nilfs_get_block, NULL);
238 return size;
239}
240
241const struct address_space_operations nilfs_aops = {
242 .writepage = nilfs_writepage,
243 .readpage = nilfs_readpage,
244 .sync_page = block_sync_page,
245 .writepages = nilfs_writepages,
246 .set_page_dirty = nilfs_set_page_dirty,
247 .readpages = nilfs_readpages,
248 .write_begin = nilfs_write_begin,
249 .write_end = nilfs_write_end,
250
251 .invalidatepage = block_invalidatepage,
252 .direct_IO = nilfs_direct_IO,
253 .is_partially_uptodate = block_is_partially_uptodate,
254};
255
256struct inode *nilfs_new_inode(struct inode *dir, int mode)
257{
258 struct super_block *sb = dir->i_sb;
259 struct nilfs_sb_info *sbi = NILFS_SB(sb);
260 struct inode *inode;
261 struct nilfs_inode_info *ii;
262 int err = -ENOMEM;
263 ino_t ino;
264
265 inode = new_inode(sb);
266 if (unlikely(!inode))
267 goto failed;
268
269 mapping_set_gfp_mask(inode->i_mapping,
270 mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);
271
272 ii = NILFS_I(inode);
273 ii->i_state = 1 << NILFS_I_NEW;
274
275 err = nilfs_ifile_create_inode(sbi->s_ifile, &ino, &ii->i_bh);
276 if (unlikely(err))
277 goto failed_ifile_create_inode;
278
279
280 atomic_inc(&sbi->s_inodes_count);
281
282 inode->i_uid = current_fsuid();
283 if (dir->i_mode & S_ISGID) {
284 inode->i_gid = dir->i_gid;
285 if (S_ISDIR(mode))
286 mode |= S_ISGID;
287 } else
288 inode->i_gid = current_fsgid();
289
290 inode->i_mode = mode;
291 inode->i_ino = ino;
292 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
293
294 if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) {
295 err = nilfs_bmap_read(ii->i_bmap, NULL);
296 if (err < 0)
297 goto failed_bmap;
298
299 set_bit(NILFS_I_BMAP, &ii->i_state);
300
301 }
302
303 ii->i_flags = NILFS_I(dir)->i_flags;
304 if (S_ISLNK(mode))
305 ii->i_flags &= ~(NILFS_IMMUTABLE_FL | NILFS_APPEND_FL);
306 if (!S_ISDIR(mode))
307 ii->i_flags &= ~NILFS_DIRSYNC_FL;
308
309
310
311 ii->i_dir_start_lookup = 0;
312 ii->i_cno = 0;
313 nilfs_set_inode_flags(inode);
314 spin_lock(&sbi->s_next_gen_lock);
315 inode->i_generation = sbi->s_next_generation++;
316 spin_unlock(&sbi->s_next_gen_lock);
317 insert_inode_hash(inode);
318
319 err = nilfs_init_acl(inode, dir);
320 if (unlikely(err))
321 goto failed_acl;
322
323
324
325 mark_inode_dirty(inode);
326 return inode;
327
328 failed_acl:
329 failed_bmap:
330 inode->i_nlink = 0;
331 iput(inode);
332
333 goto failed;
334
335 failed_ifile_create_inode:
336 make_bad_inode(inode);
337 iput(inode);
338
339 failed:
340 return ERR_PTR(err);
341}
342
343void nilfs_free_inode(struct inode *inode)
344{
345 struct super_block *sb = inode->i_sb;
346 struct nilfs_sb_info *sbi = NILFS_SB(sb);
347
348 clear_inode(inode);
349
350 (void) nilfs_ifile_delete_inode(sbi->s_ifile, inode->i_ino);
351 atomic_dec(&sbi->s_inodes_count);
352}
353
354void nilfs_set_inode_flags(struct inode *inode)
355{
356 unsigned int flags = NILFS_I(inode)->i_flags;
357
358 inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_NOATIME |
359 S_DIRSYNC);
360 if (flags & NILFS_SYNC_FL)
361 inode->i_flags |= S_SYNC;
362 if (flags & NILFS_APPEND_FL)
363 inode->i_flags |= S_APPEND;
364 if (flags & NILFS_IMMUTABLE_FL)
365 inode->i_flags |= S_IMMUTABLE;
366#ifndef NILFS_ATIME_DISABLE
367 if (flags & NILFS_NOATIME_FL)
368#endif
369 inode->i_flags |= S_NOATIME;
370 if (flags & NILFS_DIRSYNC_FL)
371 inode->i_flags |= S_DIRSYNC;
372 mapping_set_gfp_mask(inode->i_mapping,
373 mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);
374}
375
376int nilfs_read_inode_common(struct inode *inode,
377 struct nilfs_inode *raw_inode)
378{
379 struct nilfs_inode_info *ii = NILFS_I(inode);
380 int err;
381
382 inode->i_mode = le16_to_cpu(raw_inode->i_mode);
383 inode->i_uid = (uid_t)le32_to_cpu(raw_inode->i_uid);
384 inode->i_gid = (gid_t)le32_to_cpu(raw_inode->i_gid);
385 inode->i_nlink = le16_to_cpu(raw_inode->i_links_count);
386 inode->i_size = le64_to_cpu(raw_inode->i_size);
387 inode->i_atime.tv_sec = le64_to_cpu(raw_inode->i_mtime);
388 inode->i_ctime.tv_sec = le64_to_cpu(raw_inode->i_ctime);
389 inode->i_mtime.tv_sec = le64_to_cpu(raw_inode->i_mtime);
390 inode->i_atime.tv_nsec = le32_to_cpu(raw_inode->i_mtime_nsec);
391 inode->i_ctime.tv_nsec = le32_to_cpu(raw_inode->i_ctime_nsec);
392 inode->i_mtime.tv_nsec = le32_to_cpu(raw_inode->i_mtime_nsec);
393 if (inode->i_nlink == 0 && inode->i_mode == 0)
394 return -EINVAL;
395
396 inode->i_blocks = le64_to_cpu(raw_inode->i_blocks);
397 ii->i_flags = le32_to_cpu(raw_inode->i_flags);
398#if 0
399 ii->i_file_acl = le32_to_cpu(raw_inode->i_file_acl);
400 ii->i_dir_acl = S_ISREG(inode->i_mode) ?
401 0 : le32_to_cpu(raw_inode->i_dir_acl);
402#endif
403 ii->i_dir_start_lookup = 0;
404 ii->i_cno = 0;
405 inode->i_generation = le32_to_cpu(raw_inode->i_generation);
406
407 if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
408 S_ISLNK(inode->i_mode)) {
409 err = nilfs_bmap_read(ii->i_bmap, raw_inode);
410 if (err < 0)
411 return err;
412 set_bit(NILFS_I_BMAP, &ii->i_state);
413
414 }
415 return 0;
416}
417
418static int __nilfs_read_inode(struct super_block *sb, unsigned long ino,
419 struct inode *inode)
420{
421 struct nilfs_sb_info *sbi = NILFS_SB(sb);
422 struct inode *dat = nilfs_dat_inode(sbi->s_nilfs);
423 struct buffer_head *bh;
424 struct nilfs_inode *raw_inode;
425 int err;
426
427 down_read(&NILFS_MDT(dat)->mi_sem);
428 err = nilfs_ifile_get_inode_block(sbi->s_ifile, ino, &bh);
429 if (unlikely(err))
430 goto bad_inode;
431
432 raw_inode = nilfs_ifile_map_inode(sbi->s_ifile, ino, bh);
433
434 err = nilfs_read_inode_common(inode, raw_inode);
435 if (err)
436 goto failed_unmap;
437
438 if (S_ISREG(inode->i_mode)) {
439 inode->i_op = &nilfs_file_inode_operations;
440 inode->i_fop = &nilfs_file_operations;
441 inode->i_mapping->a_ops = &nilfs_aops;
442 } else if (S_ISDIR(inode->i_mode)) {
443 inode->i_op = &nilfs_dir_inode_operations;
444 inode->i_fop = &nilfs_dir_operations;
445 inode->i_mapping->a_ops = &nilfs_aops;
446 } else if (S_ISLNK(inode->i_mode)) {
447 inode->i_op = &nilfs_symlink_inode_operations;
448 inode->i_mapping->a_ops = &nilfs_aops;
449 } else {
450 inode->i_op = &nilfs_special_inode_operations;
451 init_special_inode(
452 inode, inode->i_mode,
453 new_decode_dev(le64_to_cpu(raw_inode->i_device_code)));
454 }
455 nilfs_ifile_unmap_inode(sbi->s_ifile, ino, bh);
456 brelse(bh);
457 up_read(&NILFS_MDT(dat)->mi_sem);
458 nilfs_set_inode_flags(inode);
459 return 0;
460
461 failed_unmap:
462 nilfs_ifile_unmap_inode(sbi->s_ifile, ino, bh);
463 brelse(bh);
464
465 bad_inode:
466 up_read(&NILFS_MDT(dat)->mi_sem);
467 return err;
468}
469
470struct inode *nilfs_iget(struct super_block *sb, unsigned long ino)
471{
472 struct inode *inode;
473 int err;
474
475 inode = iget_locked(sb, ino);
476 if (unlikely(!inode))
477 return ERR_PTR(-ENOMEM);
478 if (!(inode->i_state & I_NEW))
479 return inode;
480
481 err = __nilfs_read_inode(sb, ino, inode);
482 if (unlikely(err)) {
483 iget_failed(inode);
484 return ERR_PTR(err);
485 }
486 unlock_new_inode(inode);
487 return inode;
488}
489
490void nilfs_write_inode_common(struct inode *inode,
491 struct nilfs_inode *raw_inode, int has_bmap)
492{
493 struct nilfs_inode_info *ii = NILFS_I(inode);
494
495 raw_inode->i_mode = cpu_to_le16(inode->i_mode);
496 raw_inode->i_uid = cpu_to_le32(inode->i_uid);
497 raw_inode->i_gid = cpu_to_le32(inode->i_gid);
498 raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
499 raw_inode->i_size = cpu_to_le64(inode->i_size);
500 raw_inode->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
501 raw_inode->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
502 raw_inode->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
503 raw_inode->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
504 raw_inode->i_blocks = cpu_to_le64(inode->i_blocks);
505
506 raw_inode->i_flags = cpu_to_le32(ii->i_flags);
507 raw_inode->i_generation = cpu_to_le32(inode->i_generation);
508
509 if (has_bmap)
510 nilfs_bmap_write(ii->i_bmap, raw_inode);
511 else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
512 raw_inode->i_device_code =
513 cpu_to_le64(new_encode_dev(inode->i_rdev));
514
515
516}
517
518void nilfs_update_inode(struct inode *inode, struct buffer_head *ibh)
519{
520 ino_t ino = inode->i_ino;
521 struct nilfs_inode_info *ii = NILFS_I(inode);
522 struct super_block *sb = inode->i_sb;
523 struct nilfs_sb_info *sbi = NILFS_SB(sb);
524 struct nilfs_inode *raw_inode;
525
526 raw_inode = nilfs_ifile_map_inode(sbi->s_ifile, ino, ibh);
527
528
529 if (test_and_clear_bit(NILFS_I_NEW, &ii->i_state))
530 memset(raw_inode, 0, NILFS_MDT(sbi->s_ifile)->mi_entry_size);
531 set_bit(NILFS_I_INODE_DIRTY, &ii->i_state);
532
533 nilfs_write_inode_common(inode, raw_inode, 0);
534
535
536
537 nilfs_ifile_unmap_inode(sbi->s_ifile, ino, ibh);
538}
539
540#define NILFS_MAX_TRUNCATE_BLOCKS 16384
541
542static void nilfs_truncate_bmap(struct nilfs_inode_info *ii,
543 unsigned long from)
544{
545 unsigned long b;
546 int ret;
547
548 if (!test_bit(NILFS_I_BMAP, &ii->i_state))
549 return;
550 repeat:
551 ret = nilfs_bmap_last_key(ii->i_bmap, &b);
552 if (ret == -ENOENT)
553 return;
554 else if (ret < 0)
555 goto failed;
556
557 if (b < from)
558 return;
559
560 b -= min_t(unsigned long, NILFS_MAX_TRUNCATE_BLOCKS, b - from);
561 ret = nilfs_bmap_truncate(ii->i_bmap, b);
562 nilfs_relax_pressure_in_lock(ii->vfs_inode.i_sb);
563 if (!ret || (ret == -ENOMEM &&
564 nilfs_bmap_truncate(ii->i_bmap, b) == 0))
565 goto repeat;
566
567 failed:
568 if (ret == -EINVAL)
569 nilfs_error(ii->vfs_inode.i_sb, __func__,
570 "bmap is broken (ino=%lu)", ii->vfs_inode.i_ino);
571 else
572 nilfs_warning(ii->vfs_inode.i_sb, __func__,
573 "failed to truncate bmap (ino=%lu, err=%d)",
574 ii->vfs_inode.i_ino, ret);
575}
576
577void nilfs_truncate(struct inode *inode)
578{
579 unsigned long blkoff;
580 unsigned int blocksize;
581 struct nilfs_transaction_info ti;
582 struct super_block *sb = inode->i_sb;
583 struct nilfs_inode_info *ii = NILFS_I(inode);
584
585 if (!test_bit(NILFS_I_BMAP, &ii->i_state))
586 return;
587 if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
588 return;
589
590 blocksize = sb->s_blocksize;
591 blkoff = (inode->i_size + blocksize - 1) >> sb->s_blocksize_bits;
592 nilfs_transaction_begin(sb, &ti, 0);
593
594 block_truncate_page(inode->i_mapping, inode->i_size, nilfs_get_block);
595
596 nilfs_truncate_bmap(ii, blkoff);
597
598 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
599 if (IS_SYNC(inode))
600 nilfs_set_transaction_flag(NILFS_TI_SYNC);
601
602 nilfs_set_file_dirty(NILFS_SB(sb), inode, 0);
603 nilfs_transaction_commit(sb);
604
605
606}
607
608void nilfs_delete_inode(struct inode *inode)
609{
610 struct nilfs_transaction_info ti;
611 struct super_block *sb = inode->i_sb;
612 struct nilfs_inode_info *ii = NILFS_I(inode);
613
614 if (unlikely(is_bad_inode(inode))) {
615 if (inode->i_data.nrpages)
616 truncate_inode_pages(&inode->i_data, 0);
617 clear_inode(inode);
618 return;
619 }
620 nilfs_transaction_begin(sb, &ti, 0);
621
622 if (inode->i_data.nrpages)
623 truncate_inode_pages(&inode->i_data, 0);
624
625 nilfs_truncate_bmap(ii, 0);
626 nilfs_free_inode(inode);
627
628 if (IS_SYNC(inode))
629 nilfs_set_transaction_flag(NILFS_TI_SYNC);
630 nilfs_transaction_commit(sb);
631
632
633}
634
635int nilfs_setattr(struct dentry *dentry, struct iattr *iattr)
636{
637 struct nilfs_transaction_info ti;
638 struct inode *inode = dentry->d_inode;
639 struct super_block *sb = inode->i_sb;
640 int err;
641
642 err = inode_change_ok(inode, iattr);
643 if (err)
644 return err;
645
646 err = nilfs_transaction_begin(sb, &ti, 0);
647 if (unlikely(err))
648 return err;
649 err = inode_setattr(inode, iattr);
650 if (!err && (iattr->ia_valid & ATTR_MODE))
651 err = nilfs_acl_chmod(inode);
652 if (likely(!err))
653 err = nilfs_transaction_commit(sb);
654 else
655 nilfs_transaction_abort(sb);
656
657 return err;
658}
659
660int nilfs_load_inode_block(struct nilfs_sb_info *sbi, struct inode *inode,
661 struct buffer_head **pbh)
662{
663 struct nilfs_inode_info *ii = NILFS_I(inode);
664 int err;
665
666 spin_lock(&sbi->s_inode_lock);
667 if (ii->i_bh == NULL) {
668 spin_unlock(&sbi->s_inode_lock);
669 err = nilfs_ifile_get_inode_block(sbi->s_ifile, inode->i_ino,
670 pbh);
671 if (unlikely(err))
672 return err;
673 spin_lock(&sbi->s_inode_lock);
674 if (ii->i_bh == NULL)
675 ii->i_bh = *pbh;
676 else {
677 brelse(*pbh);
678 *pbh = ii->i_bh;
679 }
680 } else
681 *pbh = ii->i_bh;
682
683 get_bh(*pbh);
684 spin_unlock(&sbi->s_inode_lock);
685 return 0;
686}
687
688int nilfs_inode_dirty(struct inode *inode)
689{
690 struct nilfs_inode_info *ii = NILFS_I(inode);
691 struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb);
692 int ret = 0;
693
694 if (!list_empty(&ii->i_dirty)) {
695 spin_lock(&sbi->s_inode_lock);
696 ret = test_bit(NILFS_I_DIRTY, &ii->i_state) ||
697 test_bit(NILFS_I_BUSY, &ii->i_state);
698 spin_unlock(&sbi->s_inode_lock);
699 }
700 return ret;
701}
702
703int nilfs_set_file_dirty(struct nilfs_sb_info *sbi, struct inode *inode,
704 unsigned nr_dirty)
705{
706 struct nilfs_inode_info *ii = NILFS_I(inode);
707
708 atomic_add(nr_dirty, &sbi->s_nilfs->ns_ndirtyblks);
709
710 if (test_and_set_bit(NILFS_I_DIRTY, &ii->i_state))
711 return 0;
712
713 spin_lock(&sbi->s_inode_lock);
714 if (!test_bit(NILFS_I_QUEUED, &ii->i_state) &&
715 !test_bit(NILFS_I_BUSY, &ii->i_state)) {
716
717
718 if (list_empty(&ii->i_dirty) && igrab(inode) == NULL) {
719
720
721 nilfs_warning(sbi->s_super, __func__,
722 "cannot get inode (ino=%lu)\n",
723 inode->i_ino);
724 spin_unlock(&sbi->s_inode_lock);
725 return -EINVAL;
726
727 }
728 list_del(&ii->i_dirty);
729 list_add_tail(&ii->i_dirty, &sbi->s_dirty_files);
730 set_bit(NILFS_I_QUEUED, &ii->i_state);
731 }
732 spin_unlock(&sbi->s_inode_lock);
733 return 0;
734}
735
736int nilfs_mark_inode_dirty(struct inode *inode)
737{
738 struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb);
739 struct buffer_head *ibh;
740 int err;
741
742 err = nilfs_load_inode_block(sbi, inode, &ibh);
743 if (unlikely(err)) {
744 nilfs_warning(inode->i_sb, __func__,
745 "failed to reget inode block.\n");
746 return err;
747 }
748 lock_buffer(ibh);
749 nilfs_update_inode(inode, ibh);
750 unlock_buffer(ibh);
751 nilfs_mdt_mark_buffer_dirty(ibh);
752 nilfs_mdt_mark_dirty(sbi->s_ifile);
753 brelse(ibh);
754 return 0;
755}
756
757
758
759
760
761
762
763
764
765
766
767void nilfs_dirty_inode(struct inode *inode)
768{
769 struct nilfs_transaction_info ti;
770
771 if (is_bad_inode(inode)) {
772 nilfs_warning(inode->i_sb, __func__,
773 "tried to mark bad_inode dirty. ignored.\n");
774 dump_stack();
775 return;
776 }
777 nilfs_transaction_begin(inode->i_sb, &ti, 0);
778 nilfs_mark_inode_dirty(inode);
779 nilfs_transaction_commit(inode->i_sb);
780}
781