From 0cc61e64e21cfc24fa0d938fd148aba4a595163b Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 19 Jun 2018 18:40:14 +0200 Subject: [PATCH] block: fix timeout changes for legacy request drivers blk_mq_complete_request can only be called for blk-mq drivers, but when removing the BLK_EH_HANDLED return value, two legacy request timeout methods incorrectly got switched to call blk_mq_complete_request. Call __blk_complete_request instead to reinstance the previous behavior. For that __blk_complete_request needs to be exported. Fixes: 1fc2b62e ("scsi_transport_fc: complete requests from ->timeout") Fixes: 0df0bb08 ("null_blk: complete requests from ->timeout") Reported-by: Jianchao Wang Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- block/blk-softirq.c | 1 + drivers/block/null_blk.c | 2 +- drivers/scsi/scsi_transport_fc.c | 2 +- 3 files changed, 3 insertions(+), 2 deletions(-) diff --git a/block/blk-softirq.c b/block/blk-softirq.c index 01e2b353a2b9..15c1f5e12eb8 100644 --- a/block/blk-softirq.c +++ b/block/blk-softirq.c @@ -144,6 +144,7 @@ do_local: local_irq_restore(flags); } +EXPORT_SYMBOL(__blk_complete_request); /** * blk_complete_request - end I/O on a request diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c index 2bdadd7f1454..3d8bdbe9bd35 100644 --- a/drivers/block/null_blk.c +++ b/drivers/block/null_blk.c @@ -1365,7 +1365,7 @@ static blk_qc_t null_queue_bio(struct request_queue *q, struct bio *bio) static enum blk_eh_timer_return null_rq_timed_out_fn(struct request *rq) { pr_info("null: rq %p timed out\n", rq); - blk_mq_complete_request(rq); + __blk_complete_request(rq); return BLK_EH_DONE; } diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c index 1da3d71e9f61..13948102ca29 100644 --- a/drivers/scsi/scsi_transport_fc.c +++ b/drivers/scsi/scsi_transport_fc.c @@ -3592,7 +3592,7 @@ fc_bsg_job_timeout(struct request *req) /* the blk_end_sync_io() doesn't check the error */ if (inflight) - blk_mq_complete_request(req); + __blk_complete_request(req); return BLK_EH_DONE; } -- 2.30.2