linux-kernel - [PATCH 0/2] Fix multiple iscsi session unbind event sent to userspace

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Date:   Wed, 13 Apr 2022 21:49:45 -0400
From:   Wenchao Hao <haowenchao@...wei.com>
To:     Mike Christie <michael.christie@...cle.com>,
        Lee Duncan <lduncan@...e.com>, Chris Leech <cleech@...hat.com>,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        <open-iscsi@...glegroups.com>, <linux-scsi@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <linfeilong@...wei.com>, Wenchao Hao <haowenchao@...wei.com>
Subject: [PATCH 0/2] Fix multiple iscsi session unbind event sent to userspace

kernel would send ISCSI_KEVENT_UNBIND_SESSION twice to userspace, for
open-iscsi, this would trigger iscsi_stop twice. We should fix this issue.

Here introduced a new session state ISCSI_SESSION_UNBOUND to address it.
Once session state is ISCSI_KEVENT_UNBIND_SESSION, it means
__iscsi_unbind_session() has been called for this session and do not need
to execute any more.

Reference:https://github.com/open-iscsi/open-iscsi/issues/338

Wenchao Hao (2):
  scsi: iscsi: introduce session UNBOUND state to avoid multiple unbind
    event
  iscsi: set session to FREE state after unbind session in remove
    session

 drivers/scsi/scsi_transport_iscsi.c | 45 +++++++++++++++++++++--------
 include/scsi/scsi_transport_iscsi.h |  1 +
 2 files changed, 34 insertions(+), 12 deletions(-)

-- 
2.32.0