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Subject[PATCH 3/8] blk-mq: use blk_mq_queue_tag_busy_iter in debugfs
Date
blk_mq_tagset_busy_iter is not safe that it could get stale request
in tags->rqs[]. Use blk_mq_queue_tag_busy_iter here.

Signed-off-by: Jianchao Wang <jianchao.w.wang@oracle.com>
---
block/blk-mq-debugfs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index 7921573..7c4e771 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -442,8 +442,8 @@ 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,
- &params);
+ blk_mq_queue_tag_busy_iter(hctx->queue, hctx_show_busy_rq,
+ &params, true);

return 0;
}
--
2.7.4
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