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Commit 3069bd26 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: make btrfs_destroy_delayed_refs use btrfs_delayed_ref_lock 



We have this open coded in btrfs_destroy_delayed_refs, use the helper
instead.

Reviewed-by: default avatarNikolay Borisov <nborisov@suse.com>
Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent d1e14420

fs/btrfs/disk-io.c

+2 −9
Original line number Diff line number Diff line
@@ -4246,16 +4246,9 @@ static int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans, 


		head = rb_entry(node, struct btrfs_delayed_ref_head,

				href_node);

		if (!mutex_trylock(&head->mutex)) {

			refcount_inc(&head->refs);

			spin_unlock(&delayed_refs->lock);



			mutex_lock(&head->mutex);

			mutex_unlock(&head->mutex);

			btrfs_put_delayed_ref_head(head);

			spin_lock(&delayed_refs->lock);

		if (btrfs_delayed_ref_lock(delayed_refs, head))

			continue;

		}



		spin_lock(&head->lock);

		while ((n = rb_first_cached(&head->ref_tree)) != NULL) {

			ref = rb_entry(n, struct btrfs_delayed_ref_node,