On 21.09.2018 09:45, Qu Wenruo wrote:
> 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>
Reviewed-by: Nikolay Borisov <nbori...@suse.com>
> ---
> fs/btrfs/relocation.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
> index d7f5a11dde20..56e2fab2926d 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
>
