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Btrfs: remove unnecessary level check in balance_level

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In the callchain:

btrfs_search_slot()
   if (level != 0)
      setup_nodes_for_search()
          balance_level()

It is just impossible to have level=0 in balance_level, we can drop the
check.

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Liu Bo 2018-09-12 06:06:23 +08:00 committed by David Sterba
parent 3cf5068f3d
commit 98e6b1eb40
1 changed files with 1 additions and 2 deletions
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3
fs/btrfs/ctree.c
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@ -1815,8 +1815,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
int orig_slot = path->slots[level];
u64 orig_ptr;
if (level == 0)
return 0;
ASSERT(level > 0);
mid = path->nodes[level];