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btrfs: Remove unused op_key var from add_delayed_refs

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Added as part of 86d5f99442 ("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>
This commit is contained in:
Nikolay Borisov 2018-03-15 14:36:22 +02:00 committed by David Sterba
parent ba89b80268
commit a6dbceafb9
1 changed files with 1 additions and 4 deletions
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5
fs/btrfs/backref.c
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@ -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_delayed_extent_op *extent_op = head->extent_op;
struct btrfs_key key; struct btrfs_key key;
struct btrfs_key tmp_op_key; struct btrfs_key tmp_op_key;
struct btrfs_key *op_key = NULL;
struct rb_node *n; struct rb_node *n;
int count; int count;
int ret = 0; 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); btrfs_disk_key_to_cpu(&tmp_op_key, &extent_op->key);
op_key = &tmp_op_key;
}
spin_lock(&head->lock); spin_lock(&head->lock);
for (n = rb_first(&head->ref_tree); n; n = rb_next(n)) { for (n = rb_first(&head->ref_tree); n; n = rb_next(n)) {