Btrfs: fix return value of setflags ioctl

setflags ioctl should return error when any checks fail.

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 649f47d2afb4..6b70e0e2bd1e 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -247,9 +247,11 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
         btrfs_end_transaction(trans, root);
 
         mnt_drop_write(file->f_path.mnt);
+
+        ret = 0;
  out_unlock:
         mutex_unlock(&inode->i_mutex);
-        return 0;
+        return ret;
 }
 
 static int btrfs_ioctl_getversion(struct file *file, int __user *arg)