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Subject[BLOCK] remove-kblockd_flush_work.patch
Date
From: Cheng Renquan <crquan@gmail.com>

After many improvements on kblockd_flush_work, it is now identical to
cancel_work_sync, so a direct call to cancel_work_sync is suggested.

The only difference is that cancel_work_sync is a GPL symbol,
so no non-GPL modules anymore.

Signed-off-by: Cheng Renquan <crquan@gmail.com>

---

Index: linux-2.6.28-rc5/block/as-iosched.c
===================================================================
--- linux-2.6.28-rc5.orig/block/as-iosched.c
+++ linux-2.6.28-rc5/block/as-iosched.c
@@ -1344,7 +1344,7 @@ static void as_exit_queue(elevator_t *e)
struct as_data *ad = e->elevator_data;

del_timer_sync(&ad->antic_timer);
- kblockd_flush_work(&ad->antic_work);
+ cancel_work_sync(&ad->antic_work);

BUG_ON(!list_empty(&ad->fifo_list[REQ_SYNC]));
BUG_ON(!list_empty(&ad->fifo_list[REQ_ASYNC]));
Index: linux-2.6.28-rc5/block/blk-core.c
===================================================================
--- linux-2.6.28-rc5.orig/block/blk-core.c
+++ linux-2.6.28-rc5/block/blk-core.c
@@ -396,7 +396,7 @@ EXPORT_SYMBOL(blk_stop_queue);
void blk_sync_queue(struct request_queue *q)
{
del_timer_sync(&q->unplug_timer);
- kblockd_flush_work(&q->unplug_work);
+ cancel_work_sync(&q->unplug_work);
}
EXPORT_SYMBOL(blk_sync_queue);

@@ -2113,12 +2113,6 @@ int kblockd_schedule_work(struct request
}
EXPORT_SYMBOL(kblockd_schedule_work);

-void kblockd_flush_work(struct work_struct *work)
-{
- cancel_work_sync(work);
-}
-EXPORT_SYMBOL(kblockd_flush_work);
-
int __init blk_dev_init(void)
{
kblockd_workqueue = create_workqueue("kblockd");
Index: linux-2.6.28-rc5/block/cfq-iosched.c
===================================================================
--- linux-2.6.28-rc5.orig/block/cfq-iosched.c
+++ linux-2.6.28-rc5/block/cfq-iosched.c
@@ -2160,7 +2160,7 @@ out_cont:
static void cfq_shutdown_timer_wq(struct cfq_data *cfqd)
{
del_timer_sync(&cfqd->idle_slice_timer);
- kblockd_flush_work(&cfqd->unplug_work);
+ cancel_work_sync(&cfqd->unplug_work);
}

static void cfq_put_async_queues(struct cfq_data *cfqd)
Index: linux-2.6.28-rc5/include/linux/blkdev.h
===================================================================
--- linux-2.6.28-rc5.orig/include/linux/blkdev.h
+++ linux-2.6.28-rc5/include/linux/blkdev.h
@@ -977,7 +977,6 @@ static inline void put_dev_sector(Sector

struct work_struct;
int kblockd_schedule_work(struct request_queue *q, struct work_struct *work);
-void kblockd_flush_work(struct work_struct *work);

#define MODULE_ALIAS_BLOCKDEV(major,minor) \
MODULE_ALIAS("block-major-" __stringify(major) "-" __stringify(minor))

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