laptop-mode: Make flushes per-device

[safe/jmp/linux-2.6] / block / blk-core.c

diff --git a/block/blk-core.c b/block/blk-core.c
index 9fe174d..4b1b29e 100644 (file)
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -127,6 +127,7 @@ void blk_rq_init(struct request_queue *q, struct request *rq)
        rq->tag = -1;
        rq->ref_count = 1;
        rq->start_time = jiffies;
+       set_start_time_ns(rq);
 }
 EXPORT_SYMBOL(blk_rq_init);
 
@@ -450,6 +451,7 @@ void blk_cleanup_queue(struct request_queue *q)
         */
        blk_sync_queue(q);
 
+       del_timer_sync(&q->backing_dev_info.laptop_mode_wb_timer);
        mutex_lock(&q->sysfs_lock);
        queue_flag_set_unlocked(QUEUE_FLAG_DEAD, q);
        mutex_unlock(&q->sysfs_lock);
@@ -510,6 +512,8 @@ struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
                return NULL;
        }
 
+       setup_timer(&q->backing_dev_info.laptop_mode_wb_timer,
+                   laptop_mode_timer_fn, (unsigned long) q);
        init_timer(&q->unplug_timer);
        setup_timer(&q->timeout, blk_rq_timed_out_timer, (unsigned long) q);
        INIT_LIST_HEAD(&q->timeout_list);
@@ -1855,8 +1859,10 @@ void blk_dequeue_request(struct request *rq)
         * and to it is freed is accounted as io that is in progress at
         * the driver side.
         */
-       if (blk_account_rq(rq))
+       if (blk_account_rq(rq)) {
                q->in_flight[rq_is_sync(rq)]++;
+               set_io_start_time_ns(rq);
+       }
 }
 
 /**
@@ -2098,7 +2104,7 @@ static void blk_finish_request(struct request *req, int error)
        BUG_ON(blk_queued_rq(req));
 
        if (unlikely(laptop_mode) && blk_fs_request(req))
-               laptop_io_completion();
+               laptop_io_completion(&req->q->backing_dev_info);
 
        blk_delete_timer(req);
 
@@ -2517,4 +2523,3 @@ int __init blk_dev_init(void)
 
        return 0;
 }
-