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blk-mq: pass a reserved argument to the timeout handler

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Allow blk-mq to pass an argument to the timeout handler to indicate
if we're timing out a reserved or regular command.  For many drivers
those need to be handled different.

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 16:40:13 -07:00
committed by Jens Axboe
parent 46f92d42ee
commit 0152fb6b57
3 changed files with 14 additions and 5 deletions
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3
include/linux/blk-mq.h
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@@ -79,6 +79,7 @@ struct blk_mq_tag_set {
typedef int (queue_rq_fn)(struct blk_mq_hw_ctx *, struct request *, bool);
typedef struct blk_mq_hw_ctx *(map_queue_fn)(struct request_queue *, const int);
typedef enum blk_eh_timer_return (timeout_fn)(struct request *, bool);
typedef int (init_hctx_fn)(struct blk_mq_hw_ctx *, void *, unsigned int);
typedef void (exit_hctx_fn)(struct blk_mq_hw_ctx *, unsigned int);
typedef int (init_request_fn)(void *, struct request *, unsigned int,
@@ -103,7 +104,7 @@ struct blk_mq_ops {
/*
* Called on request timeout
*/
rq_timed_out_fn *timeout;
timeout_fn *timeout;
softirq_done_fn *complete;