linux-kernel - Re: [PATCH V2] mm, page_alloc: reserve pageblocks for high-order atomic allocations on demand -fix

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Message-ID: <20151013090850.GA11942@node>
Date:	Tue, 13 Oct 2015 12:08:50 +0300
From:	"Kirill A. Shutemov" <kirill@...temov.name>
To:	yalin wang <yalin.wang2010@...il.com>
Cc:	akpm@...ux-foundation.org, vbabka@...e.cz,
	mgorman@...hsingularity.net, mhocko@...e.com, rientjes@...gle.com,
	js1304@...il.com, kirill.shutemov@...ux.intel.com,
	hannes@...xchg.org, alexander.h.duyck@...hat.com,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] mm, page_alloc: reserve pageblocks for high-order
 atomic allocations on demand -fix

On Tue, Oct 13, 2015 at 09:42:24AM +0800, yalin wang wrote:
> There is a redundant check and a memory leak introduced by a patch in
> mmotm. This patch removes an unlikely(order) check as we are sure order
> is not zero at the time. It also checks if a page is already allocated
> to avoid a memory leak.
> 
> This is a fix to the mmotm patch
> mm-page_alloc-reserve-pageblocks-for-high-order-atomic-allocations-on-demand.patch
> 
> Signed-off-by: yalin wang <yalin.wang2010@...il.com>
> Acked-by: Mel Gorman <mgorman@...hsingularity.net>

Acked-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>

-- 
 Kirill A. Shutemov
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