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blkdebug: reschedule coroutine on the AioContext it is running on
Keep the coroutine on the same AioContext. Without this change, there would be a race between yielding the coroutine and reentering it. While the race cannot happen now, because the code only runs from a single AioContext, this will change with multiqueue support in the block layer. While doing the change, replace custom bottom half with aio_co_schedule. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 20170213135235.12274-10-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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@ -405,12 +405,6 @@ out:
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return ret;
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return ret;
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}
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}
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static void error_callback_bh(void *opaque)
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{
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Coroutine *co = opaque;
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qemu_coroutine_enter(co);
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}
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static int inject_error(BlockDriverState *bs, BlkdebugRule *rule)
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static int inject_error(BlockDriverState *bs, BlkdebugRule *rule)
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{
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{
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BDRVBlkdebugState *s = bs->opaque;
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BDRVBlkdebugState *s = bs->opaque;
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@ -423,8 +417,7 @@ static int inject_error(BlockDriverState *bs, BlkdebugRule *rule)
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}
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}
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if (!immediately) {
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if (!immediately) {
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aio_bh_schedule_oneshot(bdrv_get_aio_context(bs), error_callback_bh,
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aio_co_schedule(qemu_get_current_aio_context(), qemu_coroutine_self());
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qemu_coroutine_self());
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qemu_coroutine_yield();
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qemu_coroutine_yield();
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}
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}
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