block: get rid of kblock_schedule_delayed_work()

It was briefly introduced to allow CFQ to to delayed scheduling,
but we ended up removing that feature again. So lets kill the
function and export, and just switch CFQ back to the normal work
schedule since it is now passing in a '0' delay from all call
sites.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/block/blk-core.c b/block/blk-core.c
index 81f34311659a21cc172d3ce3dde996643941e5eb..73ecbed026053b54da043ad0576462b7e6c1fd71 100644 (file)
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2492,14 +2492,6 @@ int kblockd_schedule_work(struct request_queue *q, struct work_struct *work)
 }
 EXPORT_SYMBOL(kblockd_schedule_work);
 
-int kblockd_schedule_delayed_work(struct request_queue *q,
-                                 struct delayed_work *work,
-                                 unsigned long delay)
-{
-       return queue_delayed_work(kblockd_workqueue, work, delay);
-}
-EXPORT_SYMBOL(kblockd_schedule_delayed_work);
-
 int __init blk_dev_init(void)
 {
        BUILD_BUG_ON(__REQ_NR_BITS > 8 *

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index ae14cbaf9d0e561df98b57821d584d45c818f221..690ebd96dc42b067be43f2777ab90709832922f7 100644 (file)
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -150,7 +150,7 @@ struct cfq_data {
         * idle window management
         */
        struct timer_list idle_slice_timer;
-       struct delayed_work unplug_work;
+       struct work_struct unplug_work;
 
        struct cfq_queue *active_queue;
        struct cfq_io_context *active_cic;
@@ -268,13 +268,11 @@ static inline int cfq_bio_sync(struct bio *bio)
  * scheduler run of queue, if there are requests pending and no one in the
  * driver that will restart queueing
  */
-static inline void cfq_schedule_dispatch(struct cfq_data *cfqd,
-                                        unsigned long delay)
+static inline void cfq_schedule_dispatch(struct cfq_data *cfqd)
 {
        if (cfqd->busy_queues) {
                cfq_log(cfqd, "schedule dispatch");
-               kblockd_schedule_delayed_work(cfqd->queue, &cfqd->unplug_work,
-                                               delay);
+               kblockd_schedule_work(cfqd->queue, &cfqd->unplug_work);
        }
 }
 
@@ -1400,7 +1398,7 @@ static void cfq_put_queue(struct cfq_queue *cfqq)
 
        if (unlikely(cfqd->active_queue == cfqq)) {
                __cfq_slice_expired(cfqd, cfqq, 0);
-               cfq_schedule_dispatch(cfqd, 0);
+               cfq_schedule_dispatch(cfqd);
        }
 
        kmem_cache_free(cfq_pool, cfqq);
@@ -1495,7 +1493,7 @@ static void cfq_exit_cfqq(struct cfq_data *cfqd, struct cfq_queue *cfqq)
 {
        if (unlikely(cfqq == cfqd->active_queue)) {
                __cfq_slice_expired(cfqd, cfqq, 0);
-               cfq_schedule_dispatch(cfqd, 0);
+               cfq_schedule_dispatch(cfqd);
        }
 
        cfq_put_queue(cfqq);
@@ -2213,7 +2211,7 @@ static void cfq_completed_request(struct request_queue *q, struct request *rq)
        }
 
        if (!rq_in_driver(cfqd))
-               cfq_schedule_dispatch(cfqd, 0);
+               cfq_schedule_dispatch(cfqd);
 }
 
 /*
@@ -2343,7 +2341,7 @@ queue_fail:
        if (cic)
                put_io_context(cic->ioc);
 
-       cfq_schedule_dispatch(cfqd, 0);
+       cfq_schedule_dispatch(cfqd);
        spin_unlock_irqrestore(q->queue_lock, flags);
        cfq_log(cfqd, "set_request fail");
        return 1;
@@ -2352,7 +2350,7 @@ queue_fail:
 static void cfq_kick_queue(struct work_struct *work)
 {
        struct cfq_data *cfqd =
-               container_of(work, struct cfq_data, unplug_work.work);
+               container_of(work, struct cfq_data, unplug_work);
        struct request_queue *q = cfqd->queue;
 
        spin_lock_irq(q->queue_lock);
@@ -2406,7 +2404,7 @@ static void cfq_idle_slice_timer(unsigned long data)
 expire:
        cfq_slice_expired(cfqd, timed_out);
 out_kick:
-       cfq_schedule_dispatch(cfqd, 0);
+       cfq_schedule_dispatch(cfqd);
 out_cont:
        spin_unlock_irqrestore(cfqd->queue->queue_lock, flags);
 }
@@ -2414,7 +2412,7 @@ out_cont:
 static void cfq_shutdown_timer_wq(struct cfq_data *cfqd)
 {
        del_timer_sync(&cfqd->idle_slice_timer);
-       cancel_delayed_work_sync(&cfqd->unplug_work);
+       cancel_work_sync(&cfqd->unplug_work);
 }
 
 static void cfq_put_async_queues(struct cfq_data *cfqd)
@@ -2496,7 +2494,7 @@ static void *cfq_init_queue(struct request_queue *q)
        cfqd->idle_slice_timer.function = cfq_idle_slice_timer;
        cfqd->idle_slice_timer.data = (unsigned long) cfqd;
 
-       INIT_DELAYED_WORK(&cfqd->unplug_work, cfq_kick_queue);
+       INIT_WORK(&cfqd->unplug_work, cfq_kick_queue);
 
        cfqd->cfq_quantum = cfq_quantum;
        cfqd->cfq_fifo_expire[0] = cfq_fifo_expire[0];

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 25119041e034c9f51bdbbbfe4d3ad146ac9ad9c4..221cecd86bd3bf031e583ac37139be43355fbfec 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1172,11 +1172,7 @@ static inline void put_dev_sector(Sector p)
 }
 
 struct work_struct;
-struct delayed_work;
 int kblockd_schedule_work(struct request_queue *q, struct work_struct *work);
-int kblockd_schedule_delayed_work(struct request_queue *q,
-                                       struct delayed_work *work,
-                                       unsigned long delay);
 
 #define MODULE_ALIAS_BLOCKDEV(major,minor) \
        MODULE_ALIAS("block-major-" __stringify(major) "-" __stringify(minor))