Re: [Qemu-devel] [RFC PATCH 1/3] qemu-img bench

[Kevin Wolf]

Am 28.11.2014 um 12:49 hat Stefan Hajnoczi geschrieben:
> On Wed, Nov 26, 2014 at 03:46:42PM +0100, Kevin Wolf wrote:
> > +    while (data.n > 0) {
> > +        main_loop_wait(false);
> > +    }
> 
> Why is this false (non-blocking)?  This is why you get the main loop
> spun warning message.
> 
> Using true (blocking) seems like the right thing.  data.n changes as
> part of the callback, which is invoked from the main loop.  There is no
> need to be non-blocking.

I think the parameter has exactly the opposite meaning as what you
describe:

    int main_loop_wait(int nonblocking)

If it were true, you would get timeout = 0. qemu-io and qemu-nbd also
pass false here.

Kevin

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