From: Mike Christie <michael.christie@oracle.com>
To: lduncan@suse.com, cleech@redhat.com, njavali@marvell.com,
mrangankar@marvell.com, GR-QLogic-Storage-Upstream@marvell.com,
martin.petersen@oracle.com, linux-scsi@vger.kernel.org,
jejb@linux.ibm.com
Cc: Mike Christie <michael.christie@oracle.com>
Subject: [PATCH v2 16/28] scsi: iscsi: Flush block work before unblock
Date: Tue, 25 May 2021 13:18:09 -0500 [thread overview]
Message-ID: <20210525181821.7617-17-michael.christie@oracle.com> (raw)
In-Reply-To: <20210525181821.7617-1-michael.christie@oracle.com>
We set the max_active iSCSI EH works to 1, so all work is going to execute
in order by default. However, userspace can now override this in sysfs. If
max_active > 1, we can end up with the block_work on CPU1 and
iscsi_unblock_session running the unblock_work on CPU2 and the session
and target/device state will end up out of sync with each other.
This adds a flush of the block_work in iscsi_unblock_session.
Fixes: 1d726aa6ef57 ("scsi: iscsi: Optimize work queue flush use")
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
---
drivers/scsi/scsi_transport_iscsi.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 909134b9c313..b07105ae7c91 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -1969,6 +1969,8 @@ static void __iscsi_unblock_session(struct work_struct *work)
*/
void iscsi_unblock_session(struct iscsi_cls_session *session)
{
+ flush_work(&session->block_work);
+
queue_work(iscsi_eh_timer_workq, &session->unblock_work);
/*
* Blocking the session can be done from any context so we only
--
2.25.1
next prev parent reply other threads:[~2021-05-25 18:19 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-25 18:17 iSCSI error handler fixes v2 Mike Christie
2021-05-25 18:17 ` [PATCH v2 01/28] scsi: iscsi: Add task completion helper Mike Christie
2021-06-08 3:05 ` Martin K. Petersen
2021-05-25 18:17 ` [PATCH v2 02/28] scsi: iscsi: Stop queueing during ep_disconnect Mike Christie
2021-05-25 18:17 ` [PATCH v2 03/28] scsi: iscsi: Drop suspend calls from ep_disconnect Mike Christie
2021-05-25 18:17 ` [PATCH v2 04/28] scsi: iscsi: Force immediate failure during shutdown Mike Christie
2021-05-25 18:17 ` [PATCH v2 05/28] scsi: iscsi: Use system_unbound_wq for destroy_work Mike Christie
2021-05-25 18:17 ` [PATCH v2 06/28] scsi: iscsi: Rel ref after iscsi_lookup_endpoint Mike Christie
2021-05-25 18:18 ` [PATCH v2 07/28] scsi: iscsi: Fix in-kernel conn failure handling Mike Christie
2021-05-25 18:18 ` [PATCH v2 08/28] scsi: iscsi_tcp: Set no linger Mike Christie
2021-05-25 18:18 ` [PATCH v2 09/28] scsi: iscsi_tcp: Start socket shutdown during conn stop Mike Christie
2021-05-25 18:18 ` [PATCH v2 10/28] scsi: iscsi: Add iscsi_cls_conn refcount helpers Mike Christie
2021-05-25 18:18 ` [PATCH v2 11/28] scsi: iscsi: Have abort handler get ref to conn Mike Christie
2021-05-25 18:18 ` [PATCH v2 12/28] scsi: iscsi: Get ref to conn during reset handling Mike Christie
2021-05-25 18:18 ` [PATCH v2 13/28] scsi: iscsi: Fix conn use after free during resets Mike Christie
2021-05-25 18:18 ` [PATCH v2 14/28] scsi: iscsi: Fix shost->max_id use Mike Christie
2021-05-25 18:18 ` [PATCH v2 15/28] scsi: iscsi: Fix completion check during abort races Mike Christie
2021-05-25 18:18 ` Mike Christie [this message]
2021-05-25 18:18 ` [PATCH v2 17/28] scsi: iscsi: Hold task ref during TMF timeout handling Mike Christie
2021-05-25 18:18 ` [PATCH v2 18/28] scsi: iscsi: Move pool freeing Mike Christie
2021-05-25 18:18 ` [PATCH v2 19/28] scsi: qedi: Fix null ref during abort handling Mike Christie
2021-05-25 18:18 ` [PATCH v2 20/28] scsi: qedi: Fix race during abort timeouts Mike Christie
2021-05-25 18:18 ` [PATCH v2 21/28] scsi: qedi: Fix use after free during abort cleanup Mike Christie
2021-05-25 18:18 ` [PATCH v2 22/28] scsi: qedi: Fix TMF tid allocation Mike Christie
2021-05-25 18:18 ` [PATCH v2 23/28] scsi: qedi: Use GFP_NOIO for TMF allocation Mike Christie
2021-05-25 18:18 ` [PATCH v2 24/28] scsi: qedi: Fix TMF session block/unblock use Mike Christie
2021-05-25 18:18 ` [PATCH v2 25/28] scsi: qedi: Fix cleanup " Mike Christie
2021-05-25 18:18 ` [PATCH v2 26/28] scsi: qedi: Pass send_iscsi_tmf task to abort Mike Christie
2021-05-25 18:18 ` [PATCH v2 27/28] scsi: qedi: Complete TMF works before disconnect Mike Christie
2021-05-25 18:18 ` [PATCH v2 28/28] scsi: qedi: Wake up if cmd_cleanup_req is set Mike Christie
2021-06-02 5:28 ` iSCSI error handler fixes v2 Martin K. Petersen
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