linux-kernel - Re: [PATCH v3 1/3] hugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM

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Date:	Wed, 03 Apr 2013 15:20:11 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>, Hugh Dickins <hughd@...gle.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Konstantin Khlebnikov <khlebnikov@...nvz.org>,
	Michal Hocko <mhocko@...e.cz>,
	HATAYAMA Daisuke <d.hatayama@...fujitsu.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/3] hugetlbfs: stop setting VM_DONTDUMP in initializing
 vma(VM_HUGETLB)

On 04/03/2013 02:35 PM, Naoya Horiguchi wrote:
> Currently we fail to include any data on hugepages into coredump,
> because VM_DONTDUMP is set on hugetlbfs's vma. This behavior was recently
> introduced by commit 314e51b98 "mm: kill vma flag VM_RESERVED and
> mm->reserved_vm counter". This looks to me a serious regression,
> so let's fix it.
>
> ChangeLog v3:
>   - move 'return 0' into a separate patch
>
> ChangeLog v2:
>   - add 'return 0' in hugepage memory check
>
> Signed-off-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com>
> Acked-by: Konstantin Khlebnikov <khlebnikov@...nvz.org>
> Acked-by: Michal Hocko <mhocko@...e.cz>
> Cc: stable@...r.kernel.org

Reviewed-by: Rik van Riel <riel@...hat.com>

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