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-rw-r--r--fs/nilfs2/cpfile.c23
1 files changed, 8 insertions, 15 deletions
diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c
index 03de1da8795b..5ff15a8a1024 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: