[PATCH v2 2/2] btrfs: relocation: Remove redundant tree level check

[Qu Wenruo]

Commit 581c1760415c ("btrfs: Validate child tree block's level and first
key") has made tree block level check mandatory.

So if tree block level doesn't match, we won't get a valid extent
buffer.
The extra WARN_ON() check can be removed completely.

Signed-off-by: Qu Wenruo <w...@suse.com>
---
Changelog:
v2:
  Added tags.
---
 fs/btrfs/relocation.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 94aa148ccde6..a554e7861b6e 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2911,7 +2911,6 @@ static int get_tree_block_key(struct btrfs_fs_info 
*fs_info,
                free_extent_buffer(eb);
                return -EIO;
        }
-       WARN_ON(btrfs_header_level(eb) != block->level);
        if (block->level == 0)
                btrfs_item_key_to_cpu(eb, &block->key, 0);
        else
-- 
2.19.0