Btrfs: disable snapshot aware defrag for now

It's just broken and it's taking a lot of effort to fix it, so for now just
disable it so people can defrag in peace.  Thanks,

Cc: stable@vger.kernel.org
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index fb74a536add3f9f930139c9dca7d1e1f841ccc5c..1af34d0c744bb4bb2add1e1bf7a92c3b24590c8f 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2629,7 +2629,7 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent)
                        EXTENT_DEFRAG, 1, cached_state);
        if (ret) {
                u64 last_snapshot = btrfs_root_last_snapshot(&root->root_item);
-               if (last_snapshot >= BTRFS_I(inode)->generation)
+               if (0 && last_snapshot >= BTRFS_I(inode)->generation)
                        /* the inode is shared */
                        new = record_old_file_extents(inode, ordered_extent);