* [Qemu-devel] [PATCH 2/2] qcow2: lock on prealloc
@ 2012-05-05 3:13 zwu.kernel
0 siblings, 0 replies; only message in thread
From: zwu.kernel @ 2012-05-05 3:13 UTC (permalink / raw)
To: qemu-devel; +Cc: kwolf, Zhi Yong Wu, marcandre.lureau, stefanha
From: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
---
block/qcow2.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 8c60a6f..ee4678f 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1192,7 +1192,10 @@ static int qcow2_create2(const char *filename, int64_t total_size,
/* And if we're supposed to preallocate metadata, do that now */
if (prealloc) {
+ BDRVQcowState *s = bs->opaque;
+ qemu_co_mutex_lock(&s->lock);
ret = preallocate(bs);
+ qemu_co_mutex_unlock(&s->lock);
if (ret < 0) {
goto out;
}
--
1.7.6
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2012-05-05 3:13 [Qemu-devel] [PATCH 2/2] qcow2: lock on prealloc zwu.kernel
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