Btrfs: fix comparison in __btrfs_map_block()

Add missing comparison to op in expression, which was forgotten when doing
the REQ_OP transition.

Fixes: b3d3fa519905 ("btrfs: update __btrfs_map_block for REQ_OP transition")
Signed-off-by: Vincent Stehlé <vincent.stehle@intel.com>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 14b2d19c842c054c64768e072801fe8a684d496c..4ff9c06cb1be323de61852f057aa4d846cae3701 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5494,7 +5494,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op,
                }
 
        } else if (map->type & BTRFS_BLOCK_GROUP_DUP) {
-               if (op == REQ_OP_WRITE || REQ_OP_DISCARD ||
+               if (op == REQ_OP_WRITE || op == REQ_OP_DISCARD ||
                    op == REQ_GET_READ_MIRRORS) {
                        num_stripes = map->num_stripes;
                } else if (mirror_num) {