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authorJens Axboe <axboe@fb.com>2014-06-16 11:40:25 -0600
committerJens Axboe <axboe@fb.com>2014-06-16 11:40:25 -0600
commitd891fa70876b37941a5c5bed813e73beb53ebcf7 (patch)
tree5dbbaf0e783d42042bd05fff3e2d3fa844d1ba6c /drivers/block
parent95ed068165d8edf6a81f9a73df0bb05c38602c3c (diff)
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 <axboe@fb.com>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/null_blk.c5
1 files changed, 4 insertions, 1 deletions
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)