From d891fa70876b37941a5c5bed813e73beb53ebcf7 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Mon, 16 Jun 2014 11:40:25 -0600 Subject: [PATCH] null_blk: fix softirq completions for queue_mode == 1 Only blk-mq completions have payload attached to the request, for request_fn mode we have stored it in req->special. This fixes an oops with queue_mode=1 and softirq completions. Signed-off-by: Jens Axboe --- drivers/block/null_blk.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c index f87c4c4c1c41..a3b042c4d448 100644 --- a/drivers/block/null_blk.c +++ b/drivers/block/null_blk.c @@ -227,7 +227,10 @@ static void null_cmd_end_timer(struct nullb_cmd *cmd) static void null_softirq_done_fn(struct request *rq) { - end_cmd(blk_mq_rq_to_pdu(rq)); + if (queue_mode == NULL_Q_MQ) + end_cmd(blk_mq_rq_to_pdu(rq)); + else + end_cmd(rq->special); } static inline void null_handle_cmd(struct nullb_cmd *cmd)