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blk-mq: remove REQ_END

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Pass an explicit parameter for the last request in a batch to ->queue_rq
instead of using a request flag.  Besides being a cleaner and non-stateful
interface this is also required for the next patch, which fixes the blk-mq
I/O submission code to not start a time too early.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig
2014-09-13 16:40:08 -07:00
committed by Jens Axboe
parent 6d11fb454b
commit bf57229745
7 changed files with 14 additions and 25 deletions
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3
drivers/block/null_blk.c
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@@ -313,7 +313,8 @@ static void null_request_fn(struct request_queue *q)
}
}
static int null_queue_rq(struct blk_mq_hw_ctx *hctx, struct request *rq)
static int null_queue_rq(struct blk_mq_hw_ctx *hctx, struct request *rq,
bool last)
{
struct nullb_cmd *cmd = blk_mq_rq_to_pdu(rq);