diff options
Diffstat (limited to 'fs/nilfs2/cpfile.c')
| -rw-r--r-- | fs/nilfs2/cpfile.c | 23 |
1 files changed, 8 insertions, 15 deletions
diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c index 03de1da8795..5ff15a8a102 100644 --- a/fs/nilfs2/cpfile.c +++ b/fs/nilfs2/cpfile.c @@ -863,26 +863,19 @@ int nilfs_cpfile_is_snapshot(struct inode *cpfile, __u64 cno) */ int nilfs_cpfile_change_cpmode(struct inode *cpfile, __u64 cno, int mode) { - struct the_nilfs *nilfs; int ret; - nilfs = NILFS_MDT(cpfile)->mi_nilfs; - switch (mode) { case NILFS_CHECKPOINT: - /* - * Check for protecting existing snapshot mounts: - * 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. - */ - if (nilfs_checkpoint_is_mounted(nilfs, cno, 1)) { - /* Current implementation does not have to protect - plain read-only mounts since they are exclusive - with a read/write mount and are protected from the - cleaner. */ + if (nilfs_checkpoint_is_mounted(cpfile->i_sb, cno)) + /* + * Current implementation does not have to protect + * plain read-only mounts since they are exclusive + * with a read/write mount and are protected from the + * cleaner. + */ ret = -EBUSY; - } else + else ret = nilfs_cpfile_clear_snapshot(cpfile, cno); return ret; case NILFS_SNAPSHOT: |