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aio: convert from RFifoLock to QemuRecMutex

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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>
This commit is contained in:
Paolo Bonzini 2016-10-27 12:49:08 +02:00 • committed by Fam Zheng
parent feadec6384
commit 3fe7122337
8 changed files with 5 additions and 233 deletions
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3
include/block/aio.h
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@ -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 @@ struct AioContext {
GSource source;
/* Protects all fields from multi-threaded access */
RFifoLock lock;
QemuRecMutex lock;
/* The list of registered AIO handlers */
QLIST_HEAD(, AioHandler) aio_handlers;