diff options
| author | Christoph Hellwig <hch@lst.de> | 2015-09-27 22:01:50 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-10-01 11:10:55 +0300 |
| commit | f4829a9b7a61e159367350008a608b062c4f6840 (patch) | |
| tree | a2f488a95324e0c0b558273f48b18413ab2fa221 /include | |
| parent | 60de074ba1e8f327db19bc33d8530131ac01695d (diff) | |
| download | linux-f4829a9b7a61e159367350008a608b062c4f6840.tar.xz | |
blk-mq: fix racy updates of rq->errors
blk_mq_complete_request may be a no-op if the request has already
been completed by others means (e.g. a timeout or cancellation), but
currently drivers have to set rq->errors before calling
blk_mq_complete_request, which might leave us with the wrong error value.
Add an error parameter to blk_mq_complete_request so that we can
defer setting rq->errors until we known we won the race to complete the
request.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/blk-mq.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index b80ba4572a31..c1b5c867ff07 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -214,7 +214,7 @@ void blk_mq_add_to_requeue_list(struct request *rq, bool at_head); void blk_mq_cancel_requeue_work(struct request_queue *q); void blk_mq_kick_requeue_list(struct request_queue *q); void blk_mq_abort_requeue_list(struct request_queue *q); -void blk_mq_complete_request(struct request *rq); +void blk_mq_complete_request(struct request *rq, int error); void blk_mq_stop_hw_queue(struct blk_mq_hw_ctx *hctx); void blk_mq_start_hw_queue(struct blk_mq_hw_ctx *hctx); |