linux-kernel - Re: [RFC 2/2] cma: support MIGRATE

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Date:	Thu, 16 Aug 2012 15:17:40 +0200
From:	Michal Nazarewicz <mina86@...a86.com>
To:	Minchan Kim <minchan@...nel.org>
Cc:	Marek Szyprowski <m.szyprowski@...sung.com>,
	Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
	Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [RFC 2/2] cma: support MIGRATE_DISCARD

> On Tue, Aug 14, 2012 at 04:19:55PM +0200, Michal Nazarewicz wrote:
>> Since CMA is the only user of MIGRATE_DISCARD it may be worth it to
>> guard it inside an #ifdef, eg:

Minchan Kim <minchan@...nel.org> writes:
> In summary, I want to open it for potential usecases in future if anyone
> doesn't oppose strongly.

Fair enough.

>>>  	if (!trylock_page(page)) {
>>> -		if (!force || mode == MIGRATE_ASYNC)
>>> +		if (!force || mode & MIGRATE_ASYNC)

> It's not wrong technically but for readability, NP.

Yep, that was my point, thanks. :)

-- 
Best regards,                                         _     _
.o. | Liege of Serenely Enlightened Majesty of      o' \,=./ `o
..o | Computer Science,  Michał “mina86” Nazarewicz    (o o)
ooo +----<email/xmpp: mpn@...gle.com>--------------ooO--(_)--Ooo--

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