commit 3fe71223374e71436d4aced8865e50fd36588ff7
author Paolo Bonzini <pbonzini@redhat.com> Thu Oct 27 12:49:08 2016 +0200
committer Fam Zheng <famz@redhat.com> Fri Oct 28 21:50:18 2016 +0800
tree 204c0194ef3987e0eb94eda5c2646bebd27313ca
parent feadec63846d569829a4302486025b2915228712

aio: convert from RFifoLock to QemuRecMutex

It is simpler and a bit faster, and QEMU does not need the contention
callbacks (and thus the fairness) anymore.

Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1477565348-5458-21-git-send-email-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>

include/block/aio.h

diff --git a/include/block/aio.h b/include/block/aio.h
index 8e1885b..c7ae27c 100644
--- a/include/block/aio.h
+++ b/include/block/aio.h
@@ -18,7 +18,6 @@
 #include "qemu/queue.h"
 #include "qemu/event_notifier.h"
 #include "qemu/thread.h"
-#include "qemu/rfifolock.h"
 #include "qemu/timer.h"
 
 typedef struct BlockAIOCB BlockAIOCB;
@@ -54,7 +53,7 @@
     GSource source;
 
     /* Protects all fields from multi-threaded access */
-    RFifoLock lock;
+    QemuRecMutex lock;
 
     /* The list of registered AIO handlers */
     QLIST_HEAD(, AioHandler) aio_handlers;