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aio: add flag to skip fds to aio_dispatch()

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Polling mode will not call ppoll(2)/epoll_wait(2).  Therefore we know
there are no fds ready and should avoid looping over fd handlers in
aio_dispatch().

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20161201192652.9509-2-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2016-12-01 19:26:40 +00:00
parent 0891ee1112
commit 721671ade7
4 changed files with 20 additions and 8 deletions
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2
async.c
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@ -251,7 +251,7 @@ aio_ctx_dispatch(GSource *source,
AioContext *ctx = (AioContext *) source;
assert(callback == NULL);
aio_dispatch(ctx);
aio_dispatch(ctx, true);
return true;
}