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Re: [Qemu-block] [PATCH v3 2/2] block/file-posix: reconfigure aio on iot


From: Kevin Wolf
Subject: Re: [Qemu-block] [PATCH v3 2/2] block/file-posix: reconfigure aio on iothread start
Date: Fri, 22 Jun 2018 11:02:06 +0200
User-agent: Mutt/1.9.1 (2017-09-22)

Am 22.06.2018 um 04:25 hat Fam Zheng geschrieben:
> On Thu, 06/21 15:21, Nishanth Aravamudan wrote:
> > When the AioContext changes, we need to associate a LinuxAioState with
> > the new AioContext. Use the bdrv_attach_aio_context callback and call
> > the new aio_setup_linux_aio(), which will allocate a new AioContext if
> > needed, and return errors on failures. If it fails for any reason,
> > fallback to threaded AIO with an error message, as the device is already
> > in-use by the guest.
> > 
> > Signed-off-by: Nishanth Aravamudan <address@hidden>
> > ---
> > Note this patch didn't exist in v2, but is a result of feedback to that
> > posting.
> 
> This should be squashed into patch 1, no?

Yes, without it, patch 1 is incorrect. Specifically, at least the
assertion in aio_get_linux_aio() won't hold true without it.

Kevin



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