btrfs_delayed_ref_lock  353 fs/btrfs/delayed-ref.h int btrfs_delayed_ref_lock(struct btrfs_delayed_ref_root *delayed_refs,
btrfs_delayed_ref_lock 4289 fs/btrfs/disk-io.c 		if (btrfs_delayed_ref_lock(delayed_refs, head))
btrfs_delayed_ref_lock 1883 fs/btrfs/extent-tree.c 	ret = btrfs_delayed_ref_lock(delayed_refs, head);