From: Bob Liu <bob.liu@oracle.com>
To: linux-kernel@vger.kernel.org
Cc: xen-devel@lists.xenproject.org, Bob Liu <bob.liu@oracle.com>,
roger.pau@citrix.com
Subject: [PATCH 1/2] xen-blkfront: don't call talk_to_blkback when already connected to blkback
Date: Tue, 31 May 2016 16:59:16 +0800 [thread overview]
Message-ID: <1464685157-30738-1-git-send-email-bob.liu__34748.2953373857$1464685288$gmane$org@oracle.com> (raw)
Sometimes blkfont may receive twice blkback_changed() notification after
migration, then talk_to_blkback() will be called twice too and confused
xen-blkback.
Signed-off-by: Bob Liu <bob.liu@oracle.com>
---
drivers/block/xen-blkfront.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index ca13df8..01aa460 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -2485,7 +2485,8 @@ static void blkback_changed(struct xenbus_device *dev,
break;
case XenbusStateConnected:
- if (dev->state != XenbusStateInitialised) {
+ if ((dev->state != XenbusStateInitialised) &&
+ (dev->state != XenbusStateConnected)) {
if (talk_to_blkback(dev, info))
break;
}
--
2.7.4
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next reply other threads:[~2016-05-31 8:59 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-31 8:59 Bob Liu [this message]
[not found] <1464685157-30738-1-git-send-email-bob.liu@oracle.com>
2016-05-31 20:33 ` [PATCH 1/2] xen-blkfront: don't call talk_to_blkback when already connected to blkback Konrad Rzeszutek Wilk
[not found] ` <20160531203307.GC23808@char.us.oracle.com>
2016-06-01 5:49 ` Bob Liu
[not found] ` <574E7763.9060001@oracle.com>
2016-06-02 14:30 ` Konrad Rzeszutek Wilk
2016-06-07 15:25 ` Konrad Rzeszutek Wilk
[not found] ` <20160607152524.GA10281@localhost.localdomain>
2016-06-08 6:46 ` Bob Liu
[not found] ` <5757BF4E.9080307@oracle.com>
2016-06-08 14:47 ` Konrad Rzeszutek Wilk
[not found] ` <20160608144739.GD17027@char.us.oracle.com>
2016-06-15 8:39 ` Ross Lagerwall
[not found] ` <57611424.2020802@citrix.com>
2016-06-15 14:08 ` Konrad Rzeszutek Wilk
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