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null_blk: fix softirq completions for queue_mode == 1

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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 <axboe@fb.com>
This commit is contained in:
Jens Axboe 2014-06-16 11:40:25 -06:00
parent 95ed068165
commit d891fa7087
1 changed files with 4 additions and 1 deletions
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5
drivers/block/null_blk.c
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@ -227,7 +227,10 @@ static void null_cmd_end_timer(struct nullb_cmd *cmd)
static void null_softirq_done_fn(struct request *rq) 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) static inline void null_handle_cmd(struct nullb_cmd *cmd)