Btrfs: process mount options on mount -o remount,

Btrfs wasn't parsing any new mount options during remount, making it
difficult to set mount options on a root drive.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index f3fd7e2cbc38..66b8341e2dba 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -511,6 +511,10 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
         struct btrfs_root *root = btrfs_sb(sb);
         int ret;
 
+        ret = btrfs_parse_options(root, data);
+        if (ret)
+                return -EINVAL;
+
         if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
                 return 0;