summaryrefslogtreecommitdiff
path: root/include/linux/blk-mq.h
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2015-09-27 21:01:50 +0200
committerJens Axboe <axboe@fb.com>2015-10-01 10:10:55 +0200
commitf4829a9b7a61e159367350008a608b062c4f6840 (patch)
treea2f488a95324e0c0b558273f48b18413ab2fa221 /include/linux/blk-mq.h
parent60de074ba1e8f327db19bc33d8530131ac01695d (diff)
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/linux/blk-mq.h')
-rw-r--r--include/linux/blk-mq.h2
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);