2 * inode.c - NILFS inode operations.
4 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Written by Ryusuke Konishi <ryusuke@osrg.net>
24 #include <linux/buffer_head.h>
25 #include <linux/gfp.h>
26 #include <linux/mpage.h>
27 #include <linux/writeback.h>
28 #include <linux/uio.h>
37 struct nilfs_iget_args {
40 struct nilfs_root *root;
45 * nilfs_get_block() - get a file block on the filesystem (callback function)
46 * @inode - inode struct of the target file
47 * @blkoff - file block number
48 * @bh_result - buffer head to be mapped on
49 * @create - indicate whether allocating the block or not when it has not
52 * This function does not issue actual read request of the specified data
53 * block. It is done by VFS.
55 int nilfs_get_block(struct inode *inode, sector_t blkoff,
56 struct buffer_head *bh_result, int create)
58 struct nilfs_inode_info *ii = NILFS_I(inode);
61 struct inode *dat = nilfs_dat_inode(NILFS_I_NILFS(inode));
62 unsigned maxblocks = bh_result->b_size >> inode->i_blkbits;
64 down_read(&NILFS_MDT(dat)->mi_sem);
65 ret = nilfs_bmap_lookup_contig(ii->i_bmap, blkoff, &blknum, maxblocks);
66 up_read(&NILFS_MDT(dat)->mi_sem);
67 if (ret >= 0) { /* found */
68 map_bh(bh_result, inode->i_sb, blknum);
70 bh_result->b_size = (ret << inode->i_blkbits);
73 /* data block was not found */
74 if (ret == -ENOENT && create) {
75 struct nilfs_transaction_info ti;
77 bh_result->b_blocknr = 0;
78 err = nilfs_transaction_begin(inode->i_sb, &ti, 1);
81 err = nilfs_bmap_insert(ii->i_bmap, (unsigned long)blkoff,
82 (unsigned long)bh_result);
83 if (unlikely(err != 0)) {
86 * The get_block() function could be called
87 * from multiple callers for an inode.
88 * However, the page having this block must
89 * be locked in this case.
92 "nilfs_get_block: a race condition "
93 "while inserting a data block. "
94 "(inode number=%lu, file block "
97 (unsigned long long)blkoff);
99 } else if (err == -EINVAL) {
100 nilfs_error(inode->i_sb, __func__,
101 "broken bmap (inode=%lu)\n",
105 nilfs_transaction_abort(inode->i_sb);
108 nilfs_mark_inode_dirty(inode);
109 nilfs_transaction_commit(inode->i_sb); /* never fails */
110 /* Error handling should be detailed */
111 set_buffer_new(bh_result);
112 map_bh(bh_result, inode->i_sb, 0); /* dbn must be changed
114 } else if (ret == -ENOENT) {
115 /* not found is not error (e.g. hole); must return without
116 the mapped state flag. */
127 * nilfs_readpage() - implement readpage() method of nilfs_aops {}
128 * address_space_operations.
129 * @file - file struct of the file to be read
130 * @page - the page to be read
132 static int nilfs_readpage(struct file *file, struct page *page)
134 return mpage_readpage(page, nilfs_get_block);
138 * nilfs_readpages() - implement readpages() method of nilfs_aops {}
139 * address_space_operations.
140 * @file - file struct of the file to be read
141 * @mapping - address_space struct used for reading multiple pages
142 * @pages - the pages to be read
143 * @nr_pages - number of pages to be read
145 static int nilfs_readpages(struct file *file, struct address_space *mapping,
146 struct list_head *pages, unsigned nr_pages)
148 return mpage_readpages(mapping, pages, nr_pages, nilfs_get_block);
151 static int nilfs_writepages(struct address_space *mapping,
152 struct writeback_control *wbc)
154 struct inode *inode = mapping->host;
157 if (wbc->sync_mode == WB_SYNC_ALL)
158 err = nilfs_construct_dsync_segment(inode->i_sb, inode,
164 static int nilfs_writepage(struct page *page, struct writeback_control *wbc)
166 struct inode *inode = page->mapping->host;
169 redirty_page_for_writepage(wbc, page);
172 if (wbc->sync_mode == WB_SYNC_ALL) {
173 err = nilfs_construct_segment(inode->i_sb);
176 } else if (wbc->for_reclaim)
177 nilfs_flush_segment(inode->i_sb, inode->i_ino);
182 static int nilfs_set_page_dirty(struct page *page)
184 int ret = __set_page_dirty_buffers(page);
187 struct inode *inode = page->mapping->host;
188 struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb);
189 unsigned nr_dirty = 1 << (PAGE_SHIFT - inode->i_blkbits);
191 nilfs_set_file_dirty(sbi, inode, nr_dirty);
196 static int nilfs_write_begin(struct file *file, struct address_space *mapping,
197 loff_t pos, unsigned len, unsigned flags,
198 struct page **pagep, void **fsdata)
201 struct inode *inode = mapping->host;
202 int err = nilfs_transaction_begin(inode->i_sb, NULL, 1);
207 err = block_write_begin(mapping, pos, len, flags, pagep,
210 loff_t isize = mapping->host->i_size;
211 if (pos + len > isize)
212 vmtruncate(mapping->host, isize);
214 nilfs_transaction_abort(inode->i_sb);
219 static int nilfs_write_end(struct file *file, struct address_space *mapping,
220 loff_t pos, unsigned len, unsigned copied,
221 struct page *page, void *fsdata)
223 struct inode *inode = mapping->host;
224 unsigned start = pos & (PAGE_CACHE_SIZE - 1);
228 nr_dirty = nilfs_page_count_clean_buffers(page, start,
230 copied = generic_write_end(file, mapping, pos, len, copied, page,
232 nilfs_set_file_dirty(NILFS_SB(inode->i_sb), inode, nr_dirty);
233 err = nilfs_transaction_commit(inode->i_sb);
234 return err ? : copied;
238 nilfs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
239 loff_t offset, unsigned long nr_segs)
241 struct file *file = iocb->ki_filp;
242 struct inode *inode = file->f_mapping->host;
248 /* Needs synchronization with the cleaner */
249 size = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
250 offset, nr_segs, nilfs_get_block, NULL);
253 * In case of error extending write may have instantiated a few
254 * blocks outside i_size. Trim these off again.
256 if (unlikely((rw & WRITE) && size < 0)) {
257 loff_t isize = i_size_read(inode);
258 loff_t end = offset + iov_length(iov, nr_segs);
261 vmtruncate(inode, isize);
267 const struct address_space_operations nilfs_aops = {
268 .writepage = nilfs_writepage,
269 .readpage = nilfs_readpage,
270 .sync_page = block_sync_page,
271 .writepages = nilfs_writepages,
272 .set_page_dirty = nilfs_set_page_dirty,
273 .readpages = nilfs_readpages,
274 .write_begin = nilfs_write_begin,
275 .write_end = nilfs_write_end,
276 /* .releasepage = nilfs_releasepage, */
277 .invalidatepage = block_invalidatepage,
278 .direct_IO = nilfs_direct_IO,
279 .is_partially_uptodate = block_is_partially_uptodate,
282 struct inode *nilfs_new_inode(struct inode *dir, int mode)
284 struct super_block *sb = dir->i_sb;
285 struct nilfs_sb_info *sbi = NILFS_SB(sb);
287 struct nilfs_inode_info *ii;
288 struct nilfs_root *root;
292 inode = new_inode(sb);
293 if (unlikely(!inode))
296 mapping_set_gfp_mask(inode->i_mapping,
297 mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);
299 root = NILFS_I(dir)->i_root;
301 ii->i_state = 1 << NILFS_I_NEW;
304 err = nilfs_ifile_create_inode(sbi->s_ifile, &ino, &ii->i_bh);
306 goto failed_ifile_create_inode;
307 /* reference count of i_bh inherits from nilfs_mdt_read_block() */
309 atomic_inc(&sbi->s_inodes_count);
310 inode_init_owner(inode, dir, mode);
312 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
314 if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) {
315 err = nilfs_bmap_read(ii->i_bmap, NULL);
319 set_bit(NILFS_I_BMAP, &ii->i_state);
320 /* No lock is needed; iget() ensures it. */
323 ii->i_flags = NILFS_I(dir)->i_flags;
325 ii->i_flags &= ~(NILFS_IMMUTABLE_FL | NILFS_APPEND_FL);
327 ii->i_flags &= ~NILFS_DIRSYNC_FL;
329 /* ii->i_file_acl = 0; */
330 /* ii->i_dir_acl = 0; */
331 ii->i_dir_start_lookup = 0;
332 nilfs_set_inode_flags(inode);
333 spin_lock(&sbi->s_next_gen_lock);
334 inode->i_generation = sbi->s_next_generation++;
335 spin_unlock(&sbi->s_next_gen_lock);
336 insert_inode_hash(inode);
338 err = nilfs_init_acl(inode, dir);
340 goto failed_acl; /* never occur. When supporting
341 nilfs_init_acl(), proper cancellation of
342 above jobs should be considered */
349 iput(inode); /* raw_inode will be deleted through
350 generic_delete_inode() */
353 failed_ifile_create_inode:
354 make_bad_inode(inode);
355 iput(inode); /* if i_nlink == 1, generic_forget_inode() will be
361 void nilfs_free_inode(struct inode *inode)
363 struct super_block *sb = inode->i_sb;
364 struct nilfs_sb_info *sbi = NILFS_SB(sb);
366 /* XXX: check error code? Is there any thing I can do? */
367 (void) nilfs_ifile_delete_inode(sbi->s_ifile, inode->i_ino);
368 atomic_dec(&sbi->s_inodes_count);
371 void nilfs_set_inode_flags(struct inode *inode)
373 unsigned int flags = NILFS_I(inode)->i_flags;
375 inode->i_flags &= ~(S_SYNC | S_APPEND | S_IMMUTABLE | S_NOATIME |
377 if (flags & NILFS_SYNC_FL)
378 inode->i_flags |= S_SYNC;
379 if (flags & NILFS_APPEND_FL)
380 inode->i_flags |= S_APPEND;
381 if (flags & NILFS_IMMUTABLE_FL)
382 inode->i_flags |= S_IMMUTABLE;
383 #ifndef NILFS_ATIME_DISABLE
384 if (flags & NILFS_NOATIME_FL)
386 inode->i_flags |= S_NOATIME;
387 if (flags & NILFS_DIRSYNC_FL)
388 inode->i_flags |= S_DIRSYNC;
389 mapping_set_gfp_mask(inode->i_mapping,
390 mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);
393 int nilfs_read_inode_common(struct inode *inode,
394 struct nilfs_inode *raw_inode)
396 struct nilfs_inode_info *ii = NILFS_I(inode);
399 inode->i_mode = le16_to_cpu(raw_inode->i_mode);
400 inode->i_uid = (uid_t)le32_to_cpu(raw_inode->i_uid);
401 inode->i_gid = (gid_t)le32_to_cpu(raw_inode->i_gid);
402 inode->i_nlink = le16_to_cpu(raw_inode->i_links_count);
403 inode->i_size = le64_to_cpu(raw_inode->i_size);
404 inode->i_atime.tv_sec = le64_to_cpu(raw_inode->i_mtime);
405 inode->i_ctime.tv_sec = le64_to_cpu(raw_inode->i_ctime);
406 inode->i_mtime.tv_sec = le64_to_cpu(raw_inode->i_mtime);
407 inode->i_atime.tv_nsec = le32_to_cpu(raw_inode->i_mtime_nsec);
408 inode->i_ctime.tv_nsec = le32_to_cpu(raw_inode->i_ctime_nsec);
409 inode->i_mtime.tv_nsec = le32_to_cpu(raw_inode->i_mtime_nsec);
410 if (inode->i_nlink == 0 && inode->i_mode == 0)
411 return -EINVAL; /* this inode is deleted */
413 inode->i_blocks = le64_to_cpu(raw_inode->i_blocks);
414 ii->i_flags = le32_to_cpu(raw_inode->i_flags);
416 ii->i_file_acl = le32_to_cpu(raw_inode->i_file_acl);
417 ii->i_dir_acl = S_ISREG(inode->i_mode) ?
418 0 : le32_to_cpu(raw_inode->i_dir_acl);
420 ii->i_dir_start_lookup = 0;
421 inode->i_generation = le32_to_cpu(raw_inode->i_generation);
423 if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
424 S_ISLNK(inode->i_mode)) {
425 err = nilfs_bmap_read(ii->i_bmap, raw_inode);
428 set_bit(NILFS_I_BMAP, &ii->i_state);
429 /* No lock is needed; iget() ensures it. */
434 static int __nilfs_read_inode(struct super_block *sb, unsigned long ino,
437 struct nilfs_sb_info *sbi = NILFS_SB(sb);
438 struct inode *dat = nilfs_dat_inode(sbi->s_nilfs);
439 struct buffer_head *bh;
440 struct nilfs_inode *raw_inode;
443 down_read(&NILFS_MDT(dat)->mi_sem); /* XXX */
444 err = nilfs_ifile_get_inode_block(sbi->s_ifile, ino, &bh);
448 raw_inode = nilfs_ifile_map_inode(sbi->s_ifile, ino, bh);
450 err = nilfs_read_inode_common(inode, raw_inode);
454 if (S_ISREG(inode->i_mode)) {
455 inode->i_op = &nilfs_file_inode_operations;
456 inode->i_fop = &nilfs_file_operations;
457 inode->i_mapping->a_ops = &nilfs_aops;
458 } else if (S_ISDIR(inode->i_mode)) {
459 inode->i_op = &nilfs_dir_inode_operations;
460 inode->i_fop = &nilfs_dir_operations;
461 inode->i_mapping->a_ops = &nilfs_aops;
462 } else if (S_ISLNK(inode->i_mode)) {
463 inode->i_op = &nilfs_symlink_inode_operations;
464 inode->i_mapping->a_ops = &nilfs_aops;
466 inode->i_op = &nilfs_special_inode_operations;
468 inode, inode->i_mode,
469 huge_decode_dev(le64_to_cpu(raw_inode->i_device_code)));
471 nilfs_ifile_unmap_inode(sbi->s_ifile, ino, bh);
473 up_read(&NILFS_MDT(dat)->mi_sem); /* XXX */
474 nilfs_set_inode_flags(inode);
478 nilfs_ifile_unmap_inode(sbi->s_ifile, ino, bh);
482 up_read(&NILFS_MDT(dat)->mi_sem); /* XXX */
486 static int nilfs_iget_test(struct inode *inode, void *opaque)
488 struct nilfs_iget_args *args = opaque;
489 struct nilfs_inode_info *ii;
491 if (args->ino != inode->i_ino || args->root != NILFS_I(inode)->i_root)
495 if (!test_bit(NILFS_I_GCINODE, &ii->i_state))
496 return !args->for_gc;
498 return args->for_gc && args->cno == ii->i_cno;
501 static int nilfs_iget_set(struct inode *inode, void *opaque)
503 struct nilfs_iget_args *args = opaque;
505 inode->i_ino = args->ino;
507 NILFS_I(inode)->i_state = 1 << NILFS_I_GCINODE;
508 NILFS_I(inode)->i_cno = args->cno;
509 NILFS_I(inode)->i_root = NULL;
511 if (args->root && args->ino == NILFS_ROOT_INO)
512 nilfs_get_root(args->root);
513 NILFS_I(inode)->i_root = args->root;
518 struct inode *nilfs_iget(struct super_block *sb, struct nilfs_root *root,
521 struct nilfs_iget_args args = {
522 .ino = ino, .root = root, .cno = 0, .for_gc = 0
527 inode = iget5_locked(sb, ino, nilfs_iget_test, nilfs_iget_set, &args);
528 if (unlikely(!inode))
529 return ERR_PTR(-ENOMEM);
530 if (!(inode->i_state & I_NEW))
533 err = __nilfs_read_inode(sb, ino, inode);
538 unlock_new_inode(inode);
542 struct inode *nilfs_iget_for_gc(struct super_block *sb, unsigned long ino,
545 struct nilfs_iget_args args = {
546 .ino = ino, .root = NULL, .cno = cno, .for_gc = 1
551 inode = iget5_locked(sb, ino, nilfs_iget_test, nilfs_iget_set, &args);
552 if (unlikely(!inode))
553 return ERR_PTR(-ENOMEM);
554 if (!(inode->i_state & I_NEW))
557 err = nilfs_init_gcinode(inode);
562 unlock_new_inode(inode);
566 void nilfs_write_inode_common(struct inode *inode,
567 struct nilfs_inode *raw_inode, int has_bmap)
569 struct nilfs_inode_info *ii = NILFS_I(inode);
571 raw_inode->i_mode = cpu_to_le16(inode->i_mode);
572 raw_inode->i_uid = cpu_to_le32(inode->i_uid);
573 raw_inode->i_gid = cpu_to_le32(inode->i_gid);
574 raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
575 raw_inode->i_size = cpu_to_le64(inode->i_size);
576 raw_inode->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
577 raw_inode->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
578 raw_inode->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
579 raw_inode->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
580 raw_inode->i_blocks = cpu_to_le64(inode->i_blocks);
582 raw_inode->i_flags = cpu_to_le32(ii->i_flags);
583 raw_inode->i_generation = cpu_to_le32(inode->i_generation);
586 nilfs_bmap_write(ii->i_bmap, raw_inode);
587 else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
588 raw_inode->i_device_code =
589 cpu_to_le64(huge_encode_dev(inode->i_rdev));
590 /* When extending inode, nilfs->ns_inode_size should be checked
591 for substitutions of appended fields */
594 void nilfs_update_inode(struct inode *inode, struct buffer_head *ibh)
596 ino_t ino = inode->i_ino;
597 struct nilfs_inode_info *ii = NILFS_I(inode);
598 struct super_block *sb = inode->i_sb;
599 struct nilfs_sb_info *sbi = NILFS_SB(sb);
600 struct nilfs_inode *raw_inode;
602 raw_inode = nilfs_ifile_map_inode(sbi->s_ifile, ino, ibh);
604 if (test_and_clear_bit(NILFS_I_NEW, &ii->i_state))
605 memset(raw_inode, 0, NILFS_MDT(sbi->s_ifile)->mi_entry_size);
606 set_bit(NILFS_I_INODE_DIRTY, &ii->i_state);
608 nilfs_write_inode_common(inode, raw_inode, 0);
609 /* XXX: call with has_bmap = 0 is a workaround to avoid
610 deadlock of bmap. This delays update of i_bmap to just
612 nilfs_ifile_unmap_inode(sbi->s_ifile, ino, ibh);
615 #define NILFS_MAX_TRUNCATE_BLOCKS 16384 /* 64MB for 4KB block */
617 static void nilfs_truncate_bmap(struct nilfs_inode_info *ii,
623 if (!test_bit(NILFS_I_BMAP, &ii->i_state))
626 ret = nilfs_bmap_last_key(ii->i_bmap, &b);
635 b -= min_t(unsigned long, NILFS_MAX_TRUNCATE_BLOCKS, b - from);
636 ret = nilfs_bmap_truncate(ii->i_bmap, b);
637 nilfs_relax_pressure_in_lock(ii->vfs_inode.i_sb);
638 if (!ret || (ret == -ENOMEM &&
639 nilfs_bmap_truncate(ii->i_bmap, b) == 0))
644 nilfs_error(ii->vfs_inode.i_sb, __func__,
645 "bmap is broken (ino=%lu)", ii->vfs_inode.i_ino);
647 nilfs_warning(ii->vfs_inode.i_sb, __func__,
648 "failed to truncate bmap (ino=%lu, err=%d)",
649 ii->vfs_inode.i_ino, ret);
652 void nilfs_truncate(struct inode *inode)
654 unsigned long blkoff;
655 unsigned int blocksize;
656 struct nilfs_transaction_info ti;
657 struct super_block *sb = inode->i_sb;
658 struct nilfs_inode_info *ii = NILFS_I(inode);
660 if (!test_bit(NILFS_I_BMAP, &ii->i_state))
662 if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
665 blocksize = sb->s_blocksize;
666 blkoff = (inode->i_size + blocksize - 1) >> sb->s_blocksize_bits;
667 nilfs_transaction_begin(sb, &ti, 0); /* never fails */
669 block_truncate_page(inode->i_mapping, inode->i_size, nilfs_get_block);
671 nilfs_truncate_bmap(ii, blkoff);
673 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
675 nilfs_set_transaction_flag(NILFS_TI_SYNC);
677 nilfs_mark_inode_dirty(inode);
678 nilfs_set_file_dirty(NILFS_SB(sb), inode, 0);
679 nilfs_transaction_commit(sb);
680 /* May construct a logical segment and may fail in sync mode.
681 But truncate has no return value. */
684 static void nilfs_clear_inode(struct inode *inode)
686 struct nilfs_inode_info *ii = NILFS_I(inode);
689 * Free resources allocated in nilfs_read_inode(), here.
691 BUG_ON(!list_empty(&ii->i_dirty));
695 if (test_bit(NILFS_I_BMAP, &ii->i_state))
696 nilfs_bmap_clear(ii->i_bmap);
698 nilfs_btnode_cache_clear(&ii->i_btnode_cache);
700 if (ii->i_root && inode->i_ino == NILFS_ROOT_INO)
701 nilfs_put_root(ii->i_root);
704 void nilfs_evict_inode(struct inode *inode)
706 struct nilfs_transaction_info ti;
707 struct super_block *sb = inode->i_sb;
708 struct nilfs_inode_info *ii = NILFS_I(inode);
710 if (inode->i_nlink || !ii->i_root || unlikely(is_bad_inode(inode))) {
711 if (inode->i_data.nrpages)
712 truncate_inode_pages(&inode->i_data, 0);
713 end_writeback(inode);
714 nilfs_clear_inode(inode);
717 nilfs_transaction_begin(sb, &ti, 0); /* never fails */
719 if (inode->i_data.nrpages)
720 truncate_inode_pages(&inode->i_data, 0);
722 nilfs_truncate_bmap(ii, 0);
723 nilfs_mark_inode_dirty(inode);
724 end_writeback(inode);
725 nilfs_clear_inode(inode);
726 nilfs_free_inode(inode);
727 /* nilfs_free_inode() marks inode buffer dirty */
729 nilfs_set_transaction_flag(NILFS_TI_SYNC);
730 nilfs_transaction_commit(sb);
731 /* May construct a logical segment and may fail in sync mode.
732 But delete_inode has no return value. */
735 int nilfs_setattr(struct dentry *dentry, struct iattr *iattr)
737 struct nilfs_transaction_info ti;
738 struct inode *inode = dentry->d_inode;
739 struct super_block *sb = inode->i_sb;
742 err = inode_change_ok(inode, iattr);
746 err = nilfs_transaction_begin(sb, &ti, 0);
750 if ((iattr->ia_valid & ATTR_SIZE) &&
751 iattr->ia_size != i_size_read(inode)) {
752 err = vmtruncate(inode, iattr->ia_size);
757 setattr_copy(inode, iattr);
758 mark_inode_dirty(inode);
760 if (iattr->ia_valid & ATTR_MODE) {
761 err = nilfs_acl_chmod(inode);
766 return nilfs_transaction_commit(sb);
769 nilfs_transaction_abort(sb);
773 int nilfs_load_inode_block(struct nilfs_sb_info *sbi, struct inode *inode,
774 struct buffer_head **pbh)
776 struct nilfs_inode_info *ii = NILFS_I(inode);
779 spin_lock(&sbi->s_inode_lock);
780 if (ii->i_bh == NULL) {
781 spin_unlock(&sbi->s_inode_lock);
782 err = nilfs_ifile_get_inode_block(sbi->s_ifile, inode->i_ino,
786 spin_lock(&sbi->s_inode_lock);
787 if (ii->i_bh == NULL)
797 spin_unlock(&sbi->s_inode_lock);
801 int nilfs_inode_dirty(struct inode *inode)
803 struct nilfs_inode_info *ii = NILFS_I(inode);
804 struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb);
807 if (!list_empty(&ii->i_dirty)) {
808 spin_lock(&sbi->s_inode_lock);
809 ret = test_bit(NILFS_I_DIRTY, &ii->i_state) ||
810 test_bit(NILFS_I_BUSY, &ii->i_state);
811 spin_unlock(&sbi->s_inode_lock);
816 int nilfs_set_file_dirty(struct nilfs_sb_info *sbi, struct inode *inode,
819 struct nilfs_inode_info *ii = NILFS_I(inode);
821 atomic_add(nr_dirty, &sbi->s_nilfs->ns_ndirtyblks);
823 if (test_and_set_bit(NILFS_I_DIRTY, &ii->i_state))
826 spin_lock(&sbi->s_inode_lock);
827 if (!test_bit(NILFS_I_QUEUED, &ii->i_state) &&
828 !test_bit(NILFS_I_BUSY, &ii->i_state)) {
829 /* Because this routine may race with nilfs_dispose_list(),
830 we have to check NILFS_I_QUEUED here, too. */
831 if (list_empty(&ii->i_dirty) && igrab(inode) == NULL) {
832 /* This will happen when somebody is freeing
834 nilfs_warning(sbi->s_super, __func__,
835 "cannot get inode (ino=%lu)\n",
837 spin_unlock(&sbi->s_inode_lock);
838 return -EINVAL; /* NILFS_I_DIRTY may remain for
841 list_del(&ii->i_dirty);
842 list_add_tail(&ii->i_dirty, &sbi->s_dirty_files);
843 set_bit(NILFS_I_QUEUED, &ii->i_state);
845 spin_unlock(&sbi->s_inode_lock);
849 int nilfs_mark_inode_dirty(struct inode *inode)
851 struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb);
852 struct buffer_head *ibh;
855 err = nilfs_load_inode_block(sbi, inode, &ibh);
857 nilfs_warning(inode->i_sb, __func__,
858 "failed to reget inode block.\n");
861 nilfs_update_inode(inode, ibh);
862 nilfs_mdt_mark_buffer_dirty(ibh);
863 nilfs_mdt_mark_dirty(sbi->s_ifile);
869 * nilfs_dirty_inode - reflect changes on given inode to an inode block.
870 * @inode: inode of the file to be registered.
872 * nilfs_dirty_inode() loads a inode block containing the specified
873 * @inode and copies data from a nilfs_inode to a corresponding inode
874 * entry in the inode block. This operation is excluded from the segment
875 * construction. This function can be called both as a single operation
876 * and as a part of indivisible file operations.
878 void nilfs_dirty_inode(struct inode *inode)
880 struct nilfs_transaction_info ti;
881 struct nilfs_mdt_info *mdi = NILFS_MDT(inode);
883 if (is_bad_inode(inode)) {
884 nilfs_warning(inode->i_sb, __func__,
885 "tried to mark bad_inode dirty. ignored.\n");
890 nilfs_mdt_mark_dirty(inode);
893 nilfs_transaction_begin(inode->i_sb, &ti, 0);
894 nilfs_mark_inode_dirty(inode);
895 nilfs_transaction_commit(inode->i_sb); /* never fails */