diff options
author | Christoph Hellwig <hch@lst.de> | 2014-09-13 23:40:09 (GMT) |
---|---|---|
committer | Jens Axboe <axboe@fb.com> | 2014-09-22 18:00:07 (GMT) |
commit | e2490073cd7c3d6f6ef6e029a208edd4d38efac4 (patch) | |
tree | 48465e67b335f6d696d698641365b4a4d1e89d32 /include | |
parent | bf57229745f849e500ba69ff91e35bc8160a7373 (diff) | |
download | linux-e2490073cd7c3d6f6ef6e029a208edd4d38efac4.tar.xz |
blk-mq: call blk_mq_start_request from ->queue_rq
When we call blk_mq_start_request from the core blk-mq code before calling into
->queue_rq there is a racy window where the timeout handler can hit before we've
fully set up the driver specific part of the command.
Move the call to blk_mq_start_request into the driver so the driver can start
the request only once it is fully set up.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/blk-mq.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 9c4e306..878b6f7 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -159,6 +159,7 @@ struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags, unsigned int tag); struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *, const int ctx_index); struct blk_mq_hw_ctx *blk_mq_alloc_single_hw_queue(struct blk_mq_tag_set *, unsigned int, int); +void blk_mq_start_request(struct request *rq); void blk_mq_end_io(struct request *rq, int error); void __blk_mq_end_io(struct request *rq, int error); |