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Re: [Qemu-devel] [PATCH v2 0/2] block: warn about aio=native if libaio i


From: Markus Armbruster
Subject: Re: [Qemu-devel] [PATCH v2 0/2] block: warn about aio=native if libaio is unavailable
Date: Thu, 23 Jul 2015 10:03:32 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux)

Stefan Hajnoczi <address@hidden> writes:

> v2:
>  * Banish CONFIG_LINUX_AIO from blockdev.c, that is raw-posix.c's business
>    [Kevin]
>  * Print the warning in the same way as the aio=native,cache.direct=off
>    deprecation warning [Kevin]
>
> Open question: what about the Windows case?  We now pass the
> FILE_FLAG_OVERLAPPED flag which we didn't do before for -drive aio=native.

Odd.  Commit a273652 takes the trouble to implement native asynchronous
I/O there, but unless CONFIG_LINUX_AIO somehow gets defined, it's
unreachable, isn't it?  Paolo?

I think PATCH 2's commit message needs to be updated to discuss the
impact.



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