path: root/include/linux
diff options
authorChristoph Hellwig <hch@infradead.org>2014-02-10 03:24:38 -0800
committerJens Axboe <axboe@fb.com>2014-02-10 09:27:31 -0700
commit30a91cb4ef385fe1b260df204ef314d86fff2850 (patch)
tree97ecc925cb7868f456d5dd3219980be5dc01d900 /include/linux
parentc4540a7d8c1e595560e53acedf88901daf15a2b5 (diff)
blk-mq: rework I/O completions
Rework I/O completions to work more like the old code path. blk_mq_end_io now stays out of the business of deferring completions to others CPUs and calling blk_mark_rq_complete. The latter is very important to allow completing requests that have timed out and thus are already marked completed, the former allows using the IPI callout even for driver specific completions instead of having to reimplement them. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux')
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index b7638be58599..468be242db90 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -86,6 +86,8 @@ struct blk_mq_ops {
rq_timed_out_fn *timeout;
+ softirq_done_fn *complete;
* Override for hctx allocations (should probably go)
@@ -137,6 +139,8 @@ void blk_mq_free_single_hw_queue(struct blk_mq_hw_ctx *, unsigned int);
void blk_mq_end_io(struct request *rq, int error);
+void blk_mq_complete_request(struct request *rq);
void blk_mq_stop_hw_queue(struct blk_mq_hw_ctx *hctx);
void blk_mq_start_hw_queue(struct blk_mq_hw_ctx *hctx);
void blk_mq_stop_hw_queues(struct request_queue *q);

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