block: implement and enforce request peek/start/fetch

[safe/jmp/linux-2.6] / drivers / block / z2ram.c

diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c
index c909c1a..4575171 100644 (file)
--- a/drivers/block/z2ram.c
+++ b/drivers/block/z2ram.c
@@ -71,10 +71,7 @@ static void do_z2_request(struct request_queue *q)
 {
        struct request *req;
 
-       req = elv_next_request(q);
-       if (req)
-               blkdev_dequeue_request(req);
-
+       req = blk_fetch_request(q);
        while (req) {
                unsigned long start = blk_rq_pos(req) << 9;
                unsigned long len  = blk_rq_cur_bytes(req);
@@ -100,11 +97,8 @@ static void do_z2_request(struct request_queue *q)
                        len -= size;
                }
        done:
-               if (!__blk_end_request_cur(req, err)) {
-                       req = elv_next_request(q);
-                       if (req)
-                               blkdev_dequeue_request(req);
-               }
+               if (!__blk_end_request_cur(req, err))
+                       req = blk_fetch_request(q);
        }
 }