Btrfs: remove superfluous free_extent_buffer in read_block_for_search

read_block_for_search() can be simplified as:

tmp = find_extent_buffer();
if (tmp)
   return;

...

free_extent_buffer();
read_tree_block();

Apparently, @tmp must be NULL at this point, free_extent_buffer() is not
needed.

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 8c68961925b1..820226d42d5d 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -2432,7 +2432,6 @@ read_block_for_search(struct btrfs_root *root, struct btrfs_path *p,
         btrfs_unlock_up_safe(p, level + 1);
         btrfs_set_path_blocking(p);
 
-        free_extent_buffer(tmp);
         if (p->reada != READA_NONE)
                 reada_for_search(fs_info, p, level, slot, key->objectid);