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[Qemu-block] [PATCH 01/11] qcow2: call CoQueue APIs under CoMutex


From: Paolo Bonzini
Subject: [Qemu-block] [PATCH 01/11] qcow2: call CoQueue APIs under CoMutex
Date: Thu, 29 Jun 2017 15:27:39 +0200

Reviewed-by: Eric Blake <address@hidden>
Reviewed-by: Stefan Hajnoczi <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
 block/qcow2.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/qcow2.c b/block/qcow2.c
index 2f94f0326e..70d3f4a18e 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1741,8 +1741,6 @@ static coroutine_fn int qcow2_co_pwritev(BlockDriverState 
*bs, uint64_t offset,
     ret = 0;
 
 fail:
-    qemu_co_mutex_unlock(&s->lock);
-
     while (l2meta != NULL) {
         QCowL2Meta *next;
 
@@ -1756,6 +1754,8 @@ fail:
         l2meta = next;
     }
 
+    qemu_co_mutex_unlock(&s->lock);
+
     qemu_iovec_destroy(&hd_qiov);
     qemu_vfree(cluster_data);
     trace_qcow2_writev_done_req(qemu_coroutine_self(), ret);
-- 
2.13.0





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