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Re: [Qemu-devel] [PATCH v5] QEMUBH: make AioContext's bh re-entrant

From: liu ping fan
Subject: Re: [Qemu-devel] [PATCH v5] QEMUBH: make AioContext's bh re-entrant
Date: Mon, 8 Jul 2013 09:58:28 +0800

On Sun, Jul 7, 2013 at 8:31 PM, Andreas Färber <address@hidden> wrote:
> Am 07.07.2013 12:00, schrieb Liu Ping Fan:
>> From: Liu Ping Fan <address@hidden>
>> BH will be used outside big lock, so introduce lock to protect
>> between the writers, ie, bh's adders and deleter. The lock only
>> affects the writers and bh's callback does not take this extra lock.
>> Note that for the same AioContext, aio_bh_poll() can not run in
>> parallel yet.
>> Signed-off-by: Liu Ping Fan <address@hidden>
>> Reviewed-by: Stefan Hajnoczi <address@hidden>
>> ---
>> Repost it, and thanks Paolo for having sent pull request for the
>> atomics header that this patch depends on.
> Unlike the previous v5, From and Signed-off-by differ - intentional?
> Could probably be fixed up by Kevin if not.
Change the unwanted notes after the scissor line, and it is just a
reminder about dependency of this patch.


> Regards,
> Andreas
> --
> SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
> GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg

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