[PATCH V2 3/8] blk-mq: use blk_mq_queue_tag_inflight_iter in debugfs

Jianchao Wang
2019-03-25T05:47:55Z

blk_mq_tagset_busy_iter is not safe that it could get stale request
in tags->rqs[]. Use blk_mq_queue_tag_inflight_iter here.

Signed-off-by: Jianchao Wang <jianchao.w.wang@oracle.com>
---
block/blk-mq-debugfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index ec1d18c..b7f2538 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -438,7 +438,7 @@ static int hctx_busy_show(void *data, struct seq_file *m)
struct blk_mq_hw_ctx *hctx = data;
struct show_busy_params params = { .m = m, .hctx = hctx };

- blk_mq_tagset_busy_iter(hctx->queue->tag_set, hctx_show_busy_rq,
+ blk_mq_queue_tag_inflight_iter(hctx->queue, hctx_show_busy_rq,
&params);

return 0;
--
2.7.4