From 8c7eeb6557877e3272f3105955ca103ee351f16d Mon Sep 17 00:00:00 2001 From: Nikolay Borisov Date: Wed, 15 Aug 2018 18:26:55 +0300 Subject: [PATCH] btrfs: Remove extra reference count bumps in btrfs_compare_trees When the 2 comparison trees roots are initialised they are private to the function and already have reference counts of 1 each. There is no need to further increment the reference count since the cloned buffers are already accessed via struct btrfs_path. Eventually the 2 paths used for comparison are going to be released, effectively disposing of the cloned buffers. Signed-off-by: Nikolay Borisov Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/ctree.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index c1afcc269313..a436259c71b1 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -5388,7 +5388,6 @@ int btrfs_compare_trees(struct btrfs_root *left_root, ret = -ENOMEM; goto out; } - extent_buffer_get(left_path->nodes[left_level]); right_level = btrfs_header_level(right_root->commit_root); right_root_level = right_level; @@ -5399,7 +5398,6 @@ int btrfs_compare_trees(struct btrfs_root *left_root, ret = -ENOMEM; goto out; } - extent_buffer_get(right_path->nodes[right_level]); up_read(&fs_info->commit_root_sem); if (left_level == 0)