[PULL 5/8] block/io: Use QEMU_LOCK_GUARD to simplify mutex handling

From: Evgeny Kolmakov <[email protected]>

Replace qemu_mutex_(un)lock() calls with QEMU_LOCK_GUARD().

Signed-off-by: Evgeny Kolmakov <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Reviewed-by: Zhang Chen <[email protected]>
Reviewed-by: Michael Tokarev <[email protected]>
Signed-off-by: Michael Tokarev <[email protected]>
---
 block/io.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/block/io.c b/block/io.c
index 6c0bbdcf1e..a916b236c3 100644
--- a/block/io.c
+++ b/block/io.c
@@ -719,14 +719,12 @@ BdrvTrackedRequest *coroutine_fn bdrv_co_get_self_request(BlockDriverState *bs)
     Coroutine *self = qemu_coroutine_self();
     IO_CODE();
 
-    qemu_mutex_lock(&bs->reqs_lock);
+    QEMU_LOCK_GUARD(&bs->reqs_lock);
     QLIST_FOREACH(req, &bs->tracked_requests, list) {
         if (req->co == self) {
-            qemu_mutex_unlock(&bs->reqs_lock);
             return req;
         }
     }
-    qemu_mutex_unlock(&bs->reqs_lock);
 
     return NULL;
 }
-- 
2.47.3