From: Andrew Morton <akpm@linux-foundation.org>
To: Michal Hocko <mhocko@suse.cz>
Cc: Hillf Danton <dhillf@gmail.com>,
linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>
Subject: Re: [PATCH] mm: hugetlb: avoid bogus counter of surplus huge page
Date: Tue, 27 Dec 2011 15:51:32 -0800 [thread overview]
Message-ID: <20111227155132.d64fd6d8.akpm@linux-foundation.org> (raw)
In-Reply-To: <20111227125701.GG5344@tiehlicka.suse.cz>
On Tue, 27 Dec 2011 13:57:01 +0100
Michal Hocko <mhocko@suse.cz> wrote:
> On Fri 23-12-11 21:38:38, Hillf Danton wrote:
> > From: Hillf Danton <dhillf@gmail.com>
> > Subject: [PATCH] mm: hugetlb: avoid bogus counter of surplus huge page
> >
> > If we have to hand back the newly allocated huge page to page allocator,
> > for any reason, the changed counter should be recovered.
> >
> > Cc: Michal Hocko <mhocko@suse.cz>
> > Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> > Cc: Andrew Morton <akpm@linux-foundation.org>
> > Signed-off-by: Hillf Danton <dhillf@gmail.com>
>
> Broken since 2.6.27 (caff3a2c: hugetlb: call arch_prepare_hugepage() for
> surplus pages) so a stable material
afacit only s390 is affected, and s390's page_table_alloc() is fairly
immortal, using GFP_KERNEL|__GFP_REPEAT.
So unless Martin and Heiko disagree, I think we can merge this in 3.3-rc1.
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WARNING: multiple messages have this Message-ID (diff)
From: Andrew Morton <akpm@linux-foundation.org>
To: Michal Hocko <mhocko@suse.cz>
Cc: Hillf Danton <dhillf@gmail.com>,
linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>
Subject: Re: [PATCH] mm: hugetlb: avoid bogus counter of surplus huge page
Date: Tue, 27 Dec 2011 15:51:32 -0800 [thread overview]
Message-ID: <20111227155132.d64fd6d8.akpm@linux-foundation.org> (raw)
In-Reply-To: <20111227125701.GG5344@tiehlicka.suse.cz>
On Tue, 27 Dec 2011 13:57:01 +0100
Michal Hocko <mhocko@suse.cz> wrote:
> On Fri 23-12-11 21:38:38, Hillf Danton wrote:
> > From: Hillf Danton <dhillf@gmail.com>
> > Subject: [PATCH] mm: hugetlb: avoid bogus counter of surplus huge page
> >
> > If we have to hand back the newly allocated huge page to page allocator,
> > for any reason, the changed counter should be recovered.
> >
> > Cc: Michal Hocko <mhocko@suse.cz>
> > Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> > Cc: Andrew Morton <akpm@linux-foundation.org>
> > Signed-off-by: Hillf Danton <dhillf@gmail.com>
>
> Broken since 2.6.27 (caff3a2c: hugetlb: call arch_prepare_hugepage() for
> surplus pages) so a stable material
afacit only s390 is affected, and s390's page_table_alloc() is fairly
immortal, using GFP_KERNEL|__GFP_REPEAT.
So unless Martin and Heiko disagree, I think we can merge this in 3.3-rc1.
next prev parent reply other threads:[~2011-12-27 23:51 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-23 13:38 [PATCH] mm: hugetlb: avoid bogus counter of surplus huge page Hillf Danton
2011-12-23 13:38 ` Hillf Danton
2011-12-26 7:28 ` KAMEZAWA Hiroyuki
2011-12-26 7:28 ` KAMEZAWA Hiroyuki
2011-12-27 12:57 ` Michal Hocko
2011-12-27 12:57 ` Michal Hocko
2011-12-27 23:51 ` Andrew Morton [this message]
2011-12-27 23:51 ` Andrew Morton
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