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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-09-13 11:16:34 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-10-23 09:24:38 +0900 |
| commit | 032dbb3b503a30fce732ec4c05525d0abed1f1d6 (patch) | |
| tree | 462696abcf0783d50efe97a3ca2641beecc91a3e /fs/nilfs2/nilfs.h | |
| parent | f1e89c86fdd0f5e59f6768146c86437934202033 (diff) | |
| download | linux-stable-032dbb3b503a30fce732ec4c05525d0abed1f1d6.tar.gz linux-stable-032dbb3b503a30fce732ec4c05525d0abed1f1d6.tar.bz2 linux-stable-032dbb3b503a30fce732ec4c05525d0abed1f1d6.zip | |
nilfs2: see state of root dentry for mount check of snapshots
After applied the patch that unified sb instances, root dentry of
snapshots can be left in dcache even after their trees are unmounted.
The orphan root dentry/inode keeps a root object, and this causes
false positive of nilfs_checkpoint_is_mounted function.
This resolves the issue by having nilfs_checkpoint_is_mounted test
whether the root dentry is busy or not.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/nilfs.h')
| -rw-r--r-- | fs/nilfs2/nilfs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h index 2ca2ca5ca848..f6e276eaaf6f 100644 --- a/fs/nilfs2/nilfs.h +++ b/fs/nilfs2/nilfs.h @@ -244,6 +244,8 @@ extern int nilfs_get_block(struct inode *, sector_t, struct buffer_head *, int); extern void nilfs_set_inode_flags(struct inode *); extern int nilfs_read_inode_common(struct inode *, struct nilfs_inode *); extern void nilfs_write_inode_common(struct inode *, struct nilfs_inode *, int); +struct inode *nilfs_ilookup(struct super_block *sb, struct nilfs_root *root, + unsigned long ino); struct inode *nilfs_iget_locked(struct super_block *sb, struct nilfs_root *root, unsigned long ino); struct inode *nilfs_iget(struct super_block *sb, struct nilfs_root *root, @@ -285,6 +287,7 @@ extern int nilfs_commit_super(struct nilfs_sb_info *, int); extern int nilfs_cleanup_super(struct nilfs_sb_info *); int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt, struct nilfs_root **root); +int nilfs_checkpoint_is_mounted(struct super_block *sb, __u64 cno); /* gcinode.c */ int nilfs_gccache_submit_read_data(struct inode *, sector_t, sector_t, __u64, |