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....@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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