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block: kill queue_sync_plugs()

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The original use for this dates back to when we had to track write
requests for serializing around barriers. That's not needed anymore,
so kill it.

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Jens Axboe 2011-04-12 10:30:53 +02:00
parent dc6d36c971
commit cf82c79839
1 changed files with 0 additions and 14 deletions
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14
block/blk-core.c
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@ -198,19 +198,6 @@ void blk_dump_rq_flags(struct request *rq, char *msg)
} }
EXPORT_SYMBOL(blk_dump_rq_flags); EXPORT_SYMBOL(blk_dump_rq_flags);
/*
* Make sure that plugs that were pending when this function was entered,
* are now complete and requests pushed to the queue.
*/
static inline void queue_sync_plugs(struct request_queue *q)
{
/*
* If the current process is plugged and has barriers submitted,
* we will livelock if we don't unplug first.
*/
blk_flush_plug(current);
}
static void blk_delay_work(struct work_struct *work) static void blk_delay_work(struct work_struct *work)
{ {
struct request_queue *q; struct request_queue *q;
@ -298,7 +285,6 @@ void blk_sync_queue(struct request_queue *q)
{ {
del_timer_sync(&q->timeout); del_timer_sync(&q->timeout);
cancel_delayed_work_sync(&q->delay_work); cancel_delayed_work_sync(&q->delay_work);
queue_sync_plugs(q);
} }
EXPORT_SYMBOL(blk_sync_queue); EXPORT_SYMBOL(blk_sync_queue);