From: mwilck@suse.com
To: "Martin K. Petersen" <martin.petersen@oracle.com>,
Christoph Hellwig <hch@lst.de>, Ming Lei <ming.lei@redhat.com>,
Bart Van Assche <Bart.VanAssche@sandisk.com>
Cc: James Bottomley <jejb@linux.vnet.ibm.com>,
linux-scsi@vger.kernel.org, linux-block@vger.kernel.org,
Hannes Reinecke <hare@suse.de>, Martin Wilck <mwilck@suse.com>
Subject: [PATCH v3 4/8] scsi: call scsi_stop_queue() without state_mutex held
Date: Wed, 7 Jun 2023 20:22:45 +0200 [thread overview]
Message-ID: <20230607182249.22623-5-mwilck@suse.com> (raw)
In-Reply-To: <20230607182249.22623-1-mwilck@suse.com>
From: Martin Wilck <mwilck@suse.com>
sdev->state_mutex protects only sdev->sdev_state. There's no reason
to keep it held while calling scsi_stop_queue().
Signed-off-by: Martin Wilck <mwilck@suse.com>
---
drivers/scsi/scsi_lib.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index ce5788643011..26e7ce25fa05 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -2795,9 +2795,9 @@ static void scsi_device_block(struct scsi_device *sdev, void *data)
mutex_lock(&sdev->state_mutex);
err = __scsi_internal_device_block_nowait(sdev);
+ mutex_unlock(&sdev->state_mutex);
if (err == 0)
scsi_stop_queue(sdev, false);
- mutex_unlock(&sdev->state_mutex);
WARN_ONCE(err, "__scsi_internal_device_block_nowait(%s) failed: err = %d\n",
dev_name(&sdev->sdev_gendev), err);
--
2.40.1
next prev parent reply other threads:[~2023-06-07 18:24 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-07 18:22 [PATCH v3 0/8] scsi: fixes for targets with many LUNs, and scsi_target_block rework mwilck
2023-06-07 18:22 ` [PATCH v3 1/8] bsg: increase number of devices mwilck
2023-06-07 18:22 ` [PATCH v3 2/8] scsi: sg: " mwilck
2023-06-07 18:22 ` [PATCH v3 3/8] scsi: merge scsi_internal_device_block() and device_block() mwilck
2023-06-07 19:10 ` Bart Van Assche
2023-06-08 5:42 ` Christoph Hellwig
2023-06-07 18:22 ` mwilck [this message]
2023-06-07 19:16 ` [PATCH v3 4/8] scsi: call scsi_stop_queue() without state_mutex held Bart Van Assche
2023-06-07 19:37 ` Martin Wilck
2023-06-07 20:07 ` Martin Wilck
2023-06-08 5:44 ` Christoph Hellwig
2023-06-08 14:12 ` Bart Van Assche
2023-06-08 18:54 ` Mike Christie
2023-06-12 11:15 ` Martin Wilck
2023-06-12 13:41 ` Bart Van Assche
2023-06-07 18:22 ` [PATCH v3 5/8] scsi: don't wait for quiesce in scsi_stop_queue() mwilck
2023-06-08 5:46 ` Christoph Hellwig
2023-06-07 18:22 ` [PATCH v3 6/8] scsi: don't wait for quiesce in scsi_device_block() mwilck
2023-06-07 18:22 ` [PATCH v3 7/8] scsi: have scsi_target_block() expect a scsi_target parent argument mwilck
2023-06-08 5:48 ` Christoph Hellwig
2023-06-07 18:22 ` [PATCH v3 8/8] scsi: add Scsi_Host argument to scsi_target_block() mwilck
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