Re: [libvirt] [PATCH] do not lock vm while allocating memory

[Wen Congyang]

于 2011-4-2 0:24, Eric Blake 写道:

On 03/30/2011 01:46 AM, Wen Congyang wrote:

There is no need to lock vm while allocating memory. If allocating
memory failed, we forgot to unlock vm.

---
  src/qemu/qemu_process.c |    3 +--
  1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index e31e1b4..e74e0f1 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -525,8 +525,6 @@ qemuProcessHandleGraphics(qemuMonitorPtr mon 
ATTRIBUTE_UNUSED,
      virDomainEventGraphicsSubjectPtr subject = NULL;
      int i;

-    virDomainObjLock(vm);
-
      if (VIR_ALLOC(localAddr)<  0)
          goto no_memory;
      localAddr->family = localFamily;
@@ -560,6 +558,7 @@ qemuProcessHandleGraphics(qemuMonitorPtr mon 
ATTRIBUTE_UNUSED,
          subject->nidentity++;
      }

+    virDomainObjLock(vm);

ACK.  It only affects the OOM path, but is worth including in 0.9.0.

Thanks, pushed.

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