linux-kernel - [PATCH 4/8] mtip32xx: use blk_mq_queue_tag_busy

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Message-Id: <1552640264-26101-5-git-send-email-jianchao.w.wang@oracle.com>
Date:   Fri, 15 Mar 2019 16:57:40 +0800
From:   Jianchao Wang <jianchao.w.wang@...cle.com>
To:     axboe@...nel.dk
Cc:     hch@....de, jthumshirn@...e.de, hare@...e.de, josef@...icpanda.com,
        bvanassche@....org, sagi@...mberg.me, keith.busch@...el.com,
        jsmart2021@...il.com, linux-block@...r.kernel.org,
        linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 4/8] mtip32xx: use blk_mq_queue_tag_busy_iter

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@...cle.com>
---
 drivers/block/mtip32xx/mtip32xx.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 88e8440..6e356f7 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -2770,13 +2770,13 @@ static int mtip_service_thread(void *data)
 
 			blk_mq_quiesce_queue(dd->queue);
 
-			blk_mq_tagset_busy_iter(&dd->tags, mtip_queue_cmd, dd);
+			blk_mq_queue_tag_busy_iter(dd->queue, mtip_queue_cmd, dd, true);
 
 			set_bit(MTIP_PF_ISSUE_CMDS_BIT, &dd->port->flags);
 
 			if (mtip_device_reset(dd))
-				blk_mq_tagset_busy_iter(&dd->tags,
-							mtip_abort_cmd, dd);
+				blk_mq_queue_tag_busy_iter(dd->queue,
+							mtip_abort_cmd, dd, true);
 
 			clear_bit(MTIP_PF_TO_ACTIVE_BIT, &dd->port->flags);
 
@@ -3907,7 +3907,7 @@ static int mtip_block_remove(struct driver_data *dd)
 
 	blk_freeze_queue_start(dd->queue);
 	blk_mq_quiesce_queue(dd->queue);
-	blk_mq_tagset_busy_iter(&dd->tags, mtip_no_dev_cleanup, dd);
+	blk_mq_queue_tag_busy_iter(dd->queue, mtip_no_dev_cleanup, dd, true);
 	blk_mq_unquiesce_queue(dd->queue);
 
 	/*
-- 
2.7.4