From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
Ming Lei <ming.lei@redhat.com>,
Bart Van Assche <bvanassche@acm.org>,
linux-block@vger.kernel.org, linux-scsi@vger.kernel.org
Subject: [PATCH 02/14] blk-mq: handle already freed tags gracefully in blk_mq_free_rqs
Date: Tue, 8 Mar 2022 06:51:48 +0100 [thread overview]
Message-ID: <20220308055200.735835-3-hch@lst.de> (raw)
In-Reply-To: <20220308055200.735835-1-hch@lst.de>
From: Ming Lei <ming.lei@redhat.com>
To simplify further changes allow for double calling blk_mq_free_rqs on
a queue.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
[hch: split out from a larger patch]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
---
block/blk-mq.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index ab4b646551334..6fd0b0f652514 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -3070,6 +3070,9 @@ void blk_mq_free_rqs(struct blk_mq_tag_set *set, struct blk_mq_tags *tags,
struct blk_mq_tags *drv_tags;
struct page *page;
+ if (list_empty(&tags->page_list))
+ return;
+
if (blk_mq_is_shared_tags(set->flags))
drv_tags = set->shared_tags;
else
--
2.30.2
next prev parent reply other threads:[~2022-03-08 5:52 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-08 5:51 move more work to disk_release v4 Christoph Hellwig
2022-03-08 5:51 ` [PATCH 01/14] blk-mq: do not include passthrough requests in I/O accounting Christoph Hellwig
2022-03-08 5:51 ` Christoph Hellwig [this message]
2022-03-08 5:51 ` [PATCH 03/14] scsi: don't use disk->private_data to find the scsi_driver Christoph Hellwig
2022-03-08 5:51 ` [PATCH 04/14] sd: rename the scsi_disk.dev field Christoph Hellwig
2022-03-08 5:51 ` [PATCH 05/14] sd: call sd_zbc_release_disk before releasing the scsi_device reference Christoph Hellwig
2022-03-08 5:51 ` [PATCH 06/14] sd: delay calling free_opal_dev Christoph Hellwig
2022-03-08 5:51 ` [PATCH 07/14] sd: implement ->free_disk to simplify refcounting Christoph Hellwig
2022-03-09 4:39 ` Bart Van Assche
2022-03-08 5:51 ` [PATCH 08/14] sr: " Christoph Hellwig
2022-03-08 5:51 ` [PATCH 09/14] block: move blkcg initialization/destroy into disk allocation/release handler Christoph Hellwig
2022-03-08 5:51 ` [PATCH 10/14] block: don't remove hctx debugfs dir from blk_mq_exit_queue Christoph Hellwig
2022-03-08 5:51 ` [PATCH 11/14] block: move q_usage_counter release into blk_queue_release Christoph Hellwig
2022-03-08 5:51 ` [PATCH 12/14] block: move blk_exit_queue into disk_release Christoph Hellwig
2022-03-08 5:51 ` [PATCH 13/14] block: do more work in elevator_exit Christoph Hellwig
2022-03-08 5:52 ` [PATCH 14/14] block: move rq_qos_exit() into disk_release() Christoph Hellwig
2022-03-09 0:58 ` move more work to disk_release v4 Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2022-03-04 16:03 move more work to disk_release v3 Christoph Hellwig
2022-03-04 16:03 ` [PATCH 02/14] blk-mq: handle already freed tags gracefully in blk_mq_free_rqs Christoph Hellwig
2022-03-06 1:05 ` Bart Van Assche
2022-03-08 3:14 ` Martin K. Petersen
2022-02-27 17:21 move more work to disk_release v2 Christoph Hellwig
2022-02-27 17:21 ` [PATCH 02/14] blk-mq: handle already freed tags gracefully in blk_mq_free_rqs Christoph Hellwig
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