X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=block%2Fdeadline-iosched.c;h=c94de8e12fbf8aa5bf827bd982a10df0a930948b;hb=ca5585ed248dc01ce918002ee9a9c9c41ae4f7c0;hp=399fa1e60e1fd6b7ca8200b7d5ef14a67b0b7672;hpb=4d74f423c722b8cadfabe087369200013b217b67;p=linux-2.6

diff --git a/block/deadline-iosched.c b/block/deadline-iosched.c
index 399fa1e60e..c94de8e12f 100644
--- a/block/deadline-iosched.c
+++ b/block/deadline-iosched.c
@@ -165,10 +165,9 @@ deadline_find_drq_hash(struct deadline_data *dd, sector_t offset)
 /*
  * rb tree support functions
  */
-#define RB_NONE		(2)
 #define RB_EMPTY(root)	((root)->rb_node == NULL)
-#define ON_RB(node)	((node)->rb_color != RB_NONE)
-#define RB_CLEAR(node)	((node)->rb_color = RB_NONE)
+#define ON_RB(node)	(rb_parent(node) != node)
+#define RB_CLEAR(node)	(rb_set_parent(node, node))
 #define rb_entry_drq(node)	rb_entry((node), struct deadline_rq, rb_node)
 #define DRQ_RB_ROOT(dd, drq)	(&(dd)->sort_list[rq_data_dir((drq)->request)])
 #define rq_rb_key(rq)		(rq)->sector
@@ -613,24 +612,24 @@ static void deadline_exit_queue(elevator_t *e)
  * initialize elevator private data (deadline_data), and alloc a drq for
  * each request on the free lists
  */
-static int deadline_init_queue(request_queue_t *q, elevator_t *e)
+static void *deadline_init_queue(request_queue_t *q, elevator_t *e)
 {
 	struct deadline_data *dd;
 	int i;
 
 	if (!drq_pool)
-		return -ENOMEM;
+		return NULL;
 
 	dd = kmalloc_node(sizeof(*dd), GFP_KERNEL, q->node);
 	if (!dd)
-		return -ENOMEM;
+		return NULL;
 	memset(dd, 0, sizeof(*dd));
 
 	dd->hash = kmalloc_node(sizeof(struct list_head)*DL_HASH_ENTRIES,
 				GFP_KERNEL, q->node);
 	if (!dd->hash) {
 		kfree(dd);
-		return -ENOMEM;
+		return NULL;
 	}
 
 	dd->drq_pool = mempool_create_node(BLKDEV_MIN_RQ, mempool_alloc_slab,
@@ -638,7 +637,7 @@ static int deadline_init_queue(request_queue_t *q, elevator_t *e)
 	if (!dd->drq_pool) {
 		kfree(dd->hash);
 		kfree(dd);
-		return -ENOMEM;
+		return NULL;
 	}
 
 	for (i = 0; i < DL_HASH_ENTRIES; i++)
@@ -653,8 +652,7 @@ static int deadline_init_queue(request_queue_t *q, elevator_t *e)
 	dd->writes_starved = writes_starved;
 	dd->front_merges = 1;
 	dd->fifo_batch = fifo_batch;
-	e->elevator_data = dd;
-	return 0;
+	return dd;
 }
 
 static void deadline_put_request(request_queue_t *q, struct request *rq)