linux-kernel - Re: [PATCH v9] mm: support madvise(MADV

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Message-ID: <20140703010318.GA2939@bbox>
Date:	Thu, 3 Jul 2014 10:03:19 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	"Kirill A. Shutemov" <kirill@...temov.name>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Michael Kerrisk <mtk.manpages@...il.com>,
	Linux API <linux-api@...r.kernel.org>,
	Hugh Dickins <hughd@...gle.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Rik van Riel <riel@...hat.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Mel Gorman <mgorman@...e.de>, Jason Evans <je@...com>,
	Zhang Yanfei <zhangyanfei@...fujitsu.com>
Subject: Re: [PATCH v9] mm: support madvise(MADV_FREE)

Hello,

On Tue, Jul 01, 2014 at 05:50:58PM +0300, Kirill A. Shutemov wrote:
> On Tue, Jul 01, 2014 at 09:36:15AM +0900, Minchan Kim wrote:
> > +	do {
> > +		/*
> > +		 * XXX: We can optimize with supporting Hugepage free
> > +		 * if the range covers.
> > +		 */
> > +		next = pmd_addr_end(addr, end);
> > +		if (pmd_trans_huge(*pmd))
> > +			split_huge_page_pmd(vma, addr, pmd);
> 
> Could you implement proper THP support before upstreaming the feature?
> It shouldn't be a big deal.

Okay, Hope to review.

Thanks for the feedback!

-- 
Kind regards,
Minchan Kim
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