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block: explicitly acquire aiocontext in aio callbacks that need it

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Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 20170213135235.12274-16-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Paolo Bonzini 2017-02-13 14:52:32 +01:00 • committed by Stefan Hajnoczi
parent 1919631e6b
commit b9e413dd37
17 changed files with 72 additions and 50 deletions
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6
block/io.c
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@ -813,7 +813,7 @@ static void bdrv_co_io_em_complete(void *opaque, int ret)
CoroutineIOCompletion *co = opaque;
co->ret = ret;
qemu_coroutine_enter(co->coroutine);
aio_co_wake(co->coroutine);
}
static int coroutine_fn bdrv_driver_preadv(BlockDriverState *bs,
@ -2152,13 +2152,9 @@ static void bdrv_co_complete(BlockAIOCBCoroutine *acb)
static void bdrv_co_em_bh(void *opaque)
{
BlockAIOCBCoroutine *acb = opaque;
BlockDriverState *bs = acb->common.bs;
AioContext *ctx = bdrv_get_aio_context(bs);
assert(!acb->need_bh);
aio_context_acquire(ctx);
bdrv_co_complete(acb);
aio_context_release(ctx);
}
static void bdrv_co_maybe_schedule_bh(BlockAIOCBCoroutine *acb)