From: Josef Bacik <josef@toxicpanda.com>
Date: Fri, 5 Nov 2021 20:45:40 +0000 (-0400)
Subject: btrfs: remove unnecessary extent root check in btrfs_defrag_leaves
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3478c732520a01561bb49f8c5d469f02419fd922;p=linux.git

btrfs: remove unnecessary extent root check in btrfs_defrag_leaves

We only defrag leaves on roots that have SHAREABLE set, so we don't need
to check if we're the extent root as it doesn't have SHAREABLE set.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---

diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index 7c45d960b53c6..b6cf39f4e7e48 100644
--- a/fs/btrfs/tree-defrag.c
+++ b/fs/btrfs/tree-defrag.c
@@ -27,14 +27,6 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
 	int next_key_ret = 0;
 	u64 last_ret = 0;
 
-	if (root->fs_info->extent_root == root) {
-		/*
-		 * there's recursion here right now in the tree locking,
-		 * we can't defrag the extent root without deadlock
-		 */
-		goto out;
-	}
-
 	if (!test_bit(BTRFS_ROOT_SHAREABLE, &root->state))
 		goto out;