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[Qemu-devel] [PATCH 09/24] vhost: make vhost_log_put() idempotent


From: marcandre . lureau
Subject: [Qemu-devel] [PATCH 09/24] vhost: make vhost_log_put() idempotent
Date: Tue, 21 Jun 2016 12:02:37 +0200

From: Marc-André Lureau <address@hidden>

Clear dev->log* when calling vhost_log_put()

Signed-off-by: Marc-André Lureau <address@hidden>
---
 hw/virtio/vhost.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index 4e23d73..febf64f 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -362,6 +362,8 @@ static void vhost_log_put(struct vhost_dev *dev, bool sync)
     if (!log) {
         return;
     }
+    dev->log = NULL;
+    dev->log_size = 0;
 
     --log->refcnt;
     if (log->refcnt == 0) {
@@ -719,8 +721,6 @@ static int vhost_migration_log(MemoryListener *listener, 
int enable)
             return r;
         }
         vhost_log_put(dev, false);
-        dev->log = NULL;
-        dev->log_size = 0;
     } else {
         vhost_dev_log_resize(dev, vhost_get_log_size(dev));
         r = vhost_dev_set_log(dev, true);
@@ -1298,7 +1298,4 @@ void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice 
*vdev)
 
     vhost_log_put(hdev, true);
     hdev->started = false;
-    hdev->log = NULL;
-    hdev->log_size = 0;
 }
-
-- 
2.7.4




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