linux-kernel - [PATCH v3 2/3] scsi: libsas: Directly kick-off EH when device removed with active IO

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Date:   Wed, 21 Dec 2022 09:25:13 +0000
From:   Xingui Yang <yangxingui@...wei.com>
To:     <jejb@...ux.ibm.com>, <martin.petersen@...cle.com>,
        <john.g.garry@...cle.com>
CC:     <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linuxarm@...wei.com>, <yangxingui@...wei.com>,
        <prime.zeng@...ilicon.com>, <kangfenglong@...wei.com>
Subject: [PATCH v3 2/3] scsi: libsas: Directly kick-off EH when device removed with active IO

If the device is gone, call sas_device_task_abort() directly and abort
active IO to kick-off EH Immediately. This avoids having to wait for block
layer timeouts.

Signed-off-by: Xingui Yang <yangxingui@...wei.com>
---
 drivers/scsi/libsas/sas_discover.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c
index d5bc1314c341..ea5609f9967b 100644
--- a/drivers/scsi/libsas/sas_discover.c
+++ b/drivers/scsi/libsas/sas_discover.c
@@ -362,6 +362,9 @@ static void sas_destruct_ports(struct asd_sas_port *port)
 
 void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *dev)
 {
+	if (test_bit(SAS_DEV_GONE, &dev->state))
+		sas_device_task_abort(dev);
+
 	if (!test_bit(SAS_DEV_DESTROY, &dev->state) &&
 	    !list_empty(&dev->disco_list_node)) {
 		/* this rphy never saw sas_rphy_add */
-- 
2.17.1