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btrfs: relocation: Remove redundant tree level check 

Commit 581c176041 ("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.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2018-09-21 15:20:30 +08:00 committed by David Sterba
parent 98ff7b94e4
commit 06bbf67244
1 changed files with 0 additions and 1 deletions
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fs/btrfs/relocation.c
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@ -2915,7 +2915,6 @@ 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