[PATCH] Remove debug.h from rio.h (unused file)

[linux-2.6] / block / elevator.c

diff --git a/block/elevator.c b/block/elevator.c
index 39dcccc82ada5b71e3105a8b7e9d8389fc9000b6..e8025b2ec54a508a1bd5db7a23c9ff687e8923b4 100644 (file)
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -64,7 +64,7 @@ inline int elv_rq_merge_ok(struct request *rq, struct bio *bio)
 }
 EXPORT_SYMBOL(elv_rq_merge_ok);
 
-inline int elv_try_merge(struct request *__rq, struct bio *bio)
+static inline int elv_try_merge(struct request *__rq, struct bio *bio)
 {
        int ret = ELEVATOR_NO_MERGE;
 
@@ -80,7 +80,6 @@ inline int elv_try_merge(struct request *__rq, struct bio *bio)
 
        return ret;
 }
-EXPORT_SYMBOL(elv_try_merge);
 
 static struct elevator_type *elevator_find(const char *name)
 {
@@ -150,6 +149,13 @@ static void elevator_setup_default(void)
        if (!chosen_elevator[0])
                strcpy(chosen_elevator, CONFIG_DEFAULT_IOSCHED);
 
+       /*
+        * Be backwards-compatible with previous kernels, so users
+        * won't get the wrong elevator.
+        */
+       if (!strcmp(chosen_elevator, "as"))
+               strcpy(chosen_elevator, "anticipatory");
+
        /*
         * If the given scheduler is not available, fall back to no-op.
         */
@@ -611,23 +617,23 @@ void elv_completed_request(request_queue_t *q, struct request *rq)
         * request is released from the driver, io must be done
         */
        if (blk_account_rq(rq)) {
-               struct request *first_rq = list_entry_rq(q->queue_head.next);
-
                q->in_flight--;
+               if (blk_sorted_rq(rq) && e->ops->elevator_completed_req_fn)
+                       e->ops->elevator_completed_req_fn(q, rq);
+       }
 
-               /*
-                * Check if the queue is waiting for fs requests to be
-                * drained for flush sequence.
-                */
-               if (q->ordseq && q->in_flight == 0 &&
+       /*
+        * Check if the queue is waiting for fs requests to be
+        * drained for flush sequence.
+        */
+       if (unlikely(q->ordseq)) {
+               struct request *first_rq = list_entry_rq(q->queue_head.next);
+               if (q->in_flight == 0 &&
                    blk_ordered_cur_seq(q) == QUEUE_ORDSEQ_DRAIN &&
                    blk_ordered_req_seq(first_rq) > QUEUE_ORDSEQ_DRAIN) {
                        blk_ordered_complete_seq(q, QUEUE_ORDSEQ_DRAIN, 0);
                        q->request_fn(q);
                }
-
-               if (blk_sorted_rq(rq) && e->ops->elevator_completed_req_fn)
-                       e->ops->elevator_completed_req_fn(q, rq);
        }
 }