linux-kernel - Re: [PATCH 06/18] compat: backport ASYNC_DOMAIN

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Message-ID: <CAB=NE6VAfAvjRs0uZ=jpMjfP5Dz-zEHu3N7t8AUAofZAggrEEQ@mail.gmail.com>
Date:	Wed, 10 Apr 2013 10:26:17 -0700
From:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	"backports@...r.kernel.org" <backports@...r.kernel.org>,
	Dan Williams <dcbw@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 06/18] compat: backport ASYNC_DOMAIN_EXCLUSIVE()

On Wed, Apr 10, 2013 at 10:20 AM, Johannes Berg
<johannes@...solutions.net> wrote:
> On Wed, 2013-04-10 at 10:13 -0700, Luis R. Rodriguez wrote:
>> On Wed, Apr 10, 2013 at 6:22 AM, Johannes Berg
>> <johannes@...solutions.net> wrote:
>> > On Wed, 2013-04-10 at 04:35 -0700, Luis R. Rodriguez wrote:
>> >> From: "Luis R. Rodriguez" <mcgrof@...not-panic.com>
>> >>
>> >> For older kernels this is simply a matter of using
>> >> LIST_HEAD.
>> >
>> > Hmm, how is that useful if it will not have any effect?
>>
>> The core of the handling is done in the internal asynch code and
>> that's kept hidden from the users of this -- so far.
>
> I guess I'd have to review the async API,

Yeap, reviewing the commit noted would help too.

> but now this wouldn't do
> anything?

Nope.

> What's the use of just this when you don't have things like
> async_schedule_domain() and async_synchronize_full_domain(), regulator
> stuff wouldn't compile I think?

You mean is not having the full asynch that deals with all registered
domains likely to have an issue on the useres of
async_synchronize_full_domain() ? Lets better ask Dan.

> I guess I'm a bit confused what kind of effect this has.

Nothing, really. If we had a user of it in other ways we'd fail
compiling anyway but right now its a simple direct replacement.

  Luis
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