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[Qemu-devel] [PATCH v2 2/2] qcow2: lock on prealloc
From: |
zwu . kernel |
Subject: |
[Qemu-devel] [PATCH v2 2/2] qcow2: lock on prealloc |
Date: |
Mon, 7 May 2012 16:51:03 +0800 |
From: Zhi Yong Wu <address@hidden>
preallocate() will be locked.
Signed-off-by: Zhi Yong Wu <address@hidden>
---
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
- [Qemu-devel] [PATCH v2 2/2] qcow2: lock on prealloc,
zwu . kernel <=