From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Andi Kleen <andi.kleen@intel.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] pagemap: fix wrong KPF_THP on slab pages
Date: Tue, 25 Sep 2012 11:59:51 -0400 [thread overview]
Message-ID: <CAHGf_=rbyk1UFGwyQ0BSN3qM_K+5J3Q-Aj=xjNDZFrTrZ6a3dw@mail.gmail.com> (raw)
In-Reply-To: <1348581414-19103-1-git-send-email-n-horiguchi@ah.jp.nec.com>
On Tue, Sep 25, 2012 at 9:56 AM, Naoya Horiguchi
<n-horiguchi@ah.jp.nec.com> wrote:
> KPF_THP can be set on non-huge compound pages like slab pages, because
> PageTransCompound only sees PG_head and PG_tail. Obviously this is a bug
> and breaks user space applications which look for thp via /proc/kpageflags.
> Currently thp is constructed only on anonymous pages, so this patch makes
> KPF_THP be set when both of PageAnon and PageTransCompound are true.
Indeed. Please add some comment too.
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next prev parent reply other threads:[~2012-09-25 16:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-25 13:56 Naoya Horiguchi
2012-09-25 15:59 ` KOSAKI Motohiro [this message]
2012-09-25 17:05 ` Naoya Horiguchi
2012-09-25 19:03 ` KOSAKI Motohiro
2012-09-26 0:20 ` David Rientjes
2012-09-26 2:06 ` Naoya Horiguchi
2012-09-26 2:26 ` David Rientjes
2012-09-26 2:47 ` Fengguang Wu
2012-09-26 4:02 ` Naoya Horiguchi
2012-09-26 6:06 ` Naoya Horiguchi
2012-09-26 7:38 ` Fengguang Wu
2012-09-26 14:42 ` Naoya Horiguchi
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