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Date:	Tue, 26 Jan 2010 15:34:00 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Mike Christie <michaelc@...wisc.edu>,
	James Bottomley <James.Bottomley@...e.de>
Subject: [34/98] [SCSI] iscsi class: modify handling of replacement timeout

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Mike Christie <michaelc@...wisc.edu>

commit fdd46dcbe4468a1f47a2cc9be442d11c3d21dd68 upstream.

This patch modifies the replacement/recovery_timeout so it works
more like the fc fast io fail tmo.

If userspace tries to set the replacement/recovery_timeout to less than
zero, we will turn off the forced recovery cleanup.

If userspace sets the value to 0 then we will force the recovery
cleanup immediately.

Signed-off-by: Mike Christie <michaelc@...wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/scsi/scsi_transport_iscsi.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -627,8 +627,10 @@ static void __iscsi_block_session(struct
 	spin_unlock_irqrestore(&session->lock, flags);
 	scsi_target_block(&session->dev);
 	ISCSI_DBG_TRANS_SESSION(session, "Completed SCSI target blocking\n");
-	queue_delayed_work(iscsi_eh_timer_workq, &session->recovery_work,
-			   session->recovery_tmo * HZ);
+	if (session->recovery_tmo >= 0)
+		queue_delayed_work(iscsi_eh_timer_workq,
+				   &session->recovery_work,
+				   session->recovery_tmo * HZ);
 }
 
 void iscsi_block_session(struct iscsi_cls_session *session)
@@ -1348,8 +1350,7 @@ iscsi_set_param(struct iscsi_transport *
 	switch (ev->u.set_param.param) {
 	case ISCSI_PARAM_SESS_RECOVERY_TMO:
 		sscanf(data, "%d", &value);
-		if (value != 0)
-			session->recovery_tmo = value;
+		session->recovery_tmo = value;
 		break;
 	default:
 		err = transport->set_param(conn, ev->u.set_param.param,


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