From: Nikolay Borisov <nborisov@suse.com>
Date: Thu, 15 Mar 2018 12:36:22 +0000 (+0200)
Subject: btrfs: Remove unused op_key var from add_delayed_refs
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=a6dbceafb915e86d1a34d8d61403c59e01c2875c;p=openwrt%2Fstaging%2Fblogic.git

btrfs: Remove unused op_key var from add_delayed_refs

Added as part of 86d5f9944252 ("btrfs: convert prelimary reference
tracking to use rbtrees") but never used. tmp_op_key essentially
subsumed that variable.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 4a33448cbb01..6007dd6b799e 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -773,15 +773,12 @@ static int add_delayed_refs(const struct btrfs_fs_info *fs_info,
 	struct btrfs_delayed_extent_op *extent_op = head->extent_op;
 	struct btrfs_key key;
 	struct btrfs_key tmp_op_key;
-	struct btrfs_key *op_key = NULL;
 	struct rb_node *n;
 	int count;
 	int ret = 0;
 
-	if (extent_op && extent_op->update_key) {
+	if (extent_op && extent_op->update_key)
 		btrfs_disk_key_to_cpu(&tmp_op_key, &extent_op->key);
-		op_key = &tmp_op_key;
-	}
 
 	spin_lock(&head->lock);
 	for (n = rb_first(&head->ref_tree); n; n = rb_next(n)) {