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[Qemu-devel] [PATCH] block: fix qcow2_co_flush deadlock
From: |
Dong Xu Wang |
Subject: |
[Qemu-devel] [PATCH] block: fix qcow2_co_flush deadlock |
Date: |
Thu, 27 Oct 2011 17:22:28 +0800 |
If qcow2_cache_flush failed, s->lock will not be unlock.
Signed-off-by: Dong Xu Wang <address@hidden>
---
block/qcow2.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index a181932..ef057d3 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1113,11 +1113,13 @@ static int qcow2_co_flush(BlockDriverState *bs)
qemu_co_mutex_lock(&s->lock);
ret = qcow2_cache_flush(bs, s->l2_table_cache);
if (ret < 0) {
+ qemu_co_mutex_unlock(&s->lock);
return ret;
}
ret = qcow2_cache_flush(bs, s->refcount_block_cache);
if (ret < 0) {
+ qemu_co_mutex_unlock(&s->lock);
return ret;
}
qemu_co_mutex_unlock(&s->lock);
--
1.7.5.4
- [Qemu-devel] [PATCH] block: fix qcow2_co_flush deadlock,
Dong Xu Wang <=