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blk-mq: support at_head inserations for blk_execute_rq

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This is neede for proper SG_IO operation as well as various uses of
blk_execute_rq from the SCSI midlayer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig 2014-02-07 10:22:36 -08:00 • committed by Jens Axboe
parent 96d2e8b5e2
commit 72a0a36e28
3 changed files with 13 additions and 9 deletions
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3
include/linux/blk-mq.h
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@ -122,7 +122,8 @@ void blk_mq_init_commands(struct request_queue *, void (*init)(void *data, struc
void blk_mq_flush_plug_list(struct blk_plug *plug, bool from_schedule);
void blk_mq_insert_request(struct request_queue *, struct request *, bool);
void blk_mq_insert_request(struct request_queue *, struct request *,
bool, bool);
void blk_mq_run_queues(struct request_queue *q, bool async);
void blk_mq_free_request(struct request *rq);
bool blk_mq_can_queue(struct blk_mq_hw_ctx *);