linux-kernel - Re: [PATCHv21 06/16] mm: page_alloc: introduce alloc_contig

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Date:	Tue, 14 Feb 2012 16:54:10 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Marek Szyprowski <m.szyprowski@...sung.com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-media@...r.kernel.org, linux-mm@...ck.org,
	linaro-mm-sig@...ts.linaro.org,
	Michal Nazarewicz <mina86@...a86.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Russell King <linux@....linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Daniel Walker <dwalker@...eaurora.org>,
	Mel Gorman <mel@....ul.ie>, Arnd Bergmann <arnd@...db.de>,
	Jesse Barker <jesse.barker@...aro.org>,
	Jonathan Corbet <corbet@....net>,
	Shariq Hasnain <shariq.hasnain@...aro.org>,
	Chunsang Jeong <chunsang.jeong@...aro.org>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Benjamin Gaignard <benjamin.gaignard@...aro.org>,
	Rob Clark <rob.clark@...aro.org>,
	Ohad Ben-Cohen <ohad@...ery.com>
Subject: Re: [PATCHv21 06/16] mm: page_alloc: introduce alloc_contig_range()

On Fri, 10 Feb 2012 18:32:21 +0100
Marek Szyprowski <m.szyprowski@...sung.com> wrote:

> From: Michal Nazarewicz <mina86@...a86.com>
> 
> This commit adds the alloc_contig_range() function which tries
> to allocate given range of pages.  It tries to migrate all
> already allocated pages that fall in the range thus freeing them.
> Once all pages in the range are freed they are removed from the
> buddy system thus allocated for the caller to use.
> 
> Signed-off-by: Michal Nazarewicz <mina86@...a86.com>
> Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
> Acked-by: Mel Gorman <mel@....ul.ie>
> Tested-by: Rob Clark <rob.clark@...aro.org>
> Tested-by: Ohad Ben-Cohen <ohad@...ery.com>
> Tested-by: Benjamin Gaignard <benjamin.gaignard@...aro.org>

Hmm, I may have to refactoring memory hot unplug code using this :)

Thanks,
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>


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