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>

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 649f47d2afb41302850904a9f3b19fd8633de4aa..6b70e0e2bd1e224dd0bdcaf72d9a86f55e2944c2 100644 (file)
--- 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)