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block: add blk_run_queue_async

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Instead of overloading __blk_run_queue to force an offload to kblockd
add a new blk_run_queue_async helper to do it explicitly.  I've kept
the blk_queue_stopped check for now, but I suspect it's not needed
as the check we do when the workqueue items runs should be enough.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Christoph Hellwig
2011-04-18 11:41:33 +02:00
committed by Jens Axboe
parent 4521cc4ed5
commit 24ecfbe27f
9 changed files with 36 additions and 23 deletions
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block/blk.h
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@@ -22,6 +22,7 @@ void blk_rq_timed_out_timer(unsigned long data);
void blk_delete_timer(struct request *);
void blk_add_timer(struct request *);
void __generic_unplug_device(struct request_queue *);
void blk_run_queue_async(struct request_queue *q);
/*
* Internal atomic flags for request handling