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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-06-08 01:39:33 +0900 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-06-11 21:36:18 -0400 |
| commit | aa7dfb8954ccf49e026ba13d12991a4eb7defb96 (patch) | |
| tree | ff2d6cf81629322906bd0cea1423e9efe516ffee /fs/nilfs2/cpfile.c | |
| parent | e59399d0102c1813cec48db5cebe1750313f88a0 (diff) | |
| download | linux-stable-aa7dfb8954ccf49e026ba13d12991a4eb7defb96.tar.gz linux-stable-aa7dfb8954ccf49e026ba13d12991a4eb7defb96.tar.bz2 linux-stable-aa7dfb8954ccf49e026ba13d12991a4eb7defb96.zip | |
nilfs2: get rid of bd_mount_sem use from nilfs
This will remove every bd_mount_sem use in nilfs.
The intended exclusion control was replaced by the previous patch
("nilfs2: correct exclusion control in nilfs_remount function") for
nilfs_remount(), and this patch will replace remains with a new mutex
that this inserts in nilfs object.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nilfs2/cpfile.c')
| -rw-r--r-- | fs/nilfs2/cpfile.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c index 300f1cdfa862..cadd36b14d07 100644 --- a/fs/nilfs2/cpfile.c +++ b/fs/nilfs2/cpfile.c @@ -864,11 +864,11 @@ int nilfs_cpfile_change_cpmode(struct inode *cpfile, __u64 cno, int mode) case NILFS_CHECKPOINT: /* * Check for protecting existing snapshot mounts: - * bd_mount_sem is used to make this operation atomic and + * ns_mount_mutex is used to make this operation atomic and * exclusive with a new mount job. Though it doesn't cover * umount, it's enough for the purpose. */ - down(&nilfs->ns_bdev->bd_mount_sem); + mutex_lock(&nilfs->ns_mount_mutex); if (nilfs_checkpoint_is_mounted(nilfs, cno, 1)) { /* Current implementation does not have to protect plain read-only mounts since they are exclusive @@ -877,7 +877,7 @@ int nilfs_cpfile_change_cpmode(struct inode *cpfile, __u64 cno, int mode) ret = -EBUSY; } else ret = nilfs_cpfile_clear_snapshot(cpfile, cno); - up(&nilfs->ns_bdev->bd_mount_sem); + mutex_unlock(&nilfs->ns_mount_mutex); return ret; case NILFS_SNAPSHOT: return nilfs_cpfile_set_snapshot(cpfile, cno); |