From: Christoph Lameter <cl@linux.com>
To: Jianyu Zhan <nasa4836@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Hugh Dickins <hughd@google.com>, Rik van Riel <riel@redhat.com>,
Mel Gorman <mgorman@suse.de>,
Zhang Yanfei <zhangyanfei@cn.fujitsu.com>,
Andrea Arcangeli <aarcange@redhat.com>,
fabf@skynet.be, sasha.levin@oracle.com, oleg@redhat.com,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
iamjoonsoo.kim@lge.com, kirill.shutemov@linux.intel.com,
Cyrill Gorcunov <gorcunov@gmail.com>,
dave.hansen@linux.intel.com, toshi.kani@hp.com,
paul.gortmaker@windriver.com, srivatsa.bhat@linux.vnet.ibm.com,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/3] mm: add comment for __mod_zone_page_stat
Date: Mon, 12 May 2014 11:07:12 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.10.1405121106080.17673@gentwo.org> (raw)
In-Reply-To: <CAHz2CGUfLx7DNgdNoAL0G3a9Ht6yf3bhWaojjNx91aF7L-iDQw@mail.gmail.com>
On Mon, 12 May 2014, Jianyu Zhan wrote:
> This means they guarantee that even they are preemted the vm
> counter won't be modified incorrectly. Because the counter is page-related
> (e.g., a new anon page added), and they are exclusively hold the pte lock.
Ok. if these locations hold the pte lock then preemption is disabled and
you are ok to use __mod_zone_page_state. Has nothing to do with the page.
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next prev parent reply other threads:[~2014-05-12 16:07 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-11 12:31 Jianyu Zhan
2014-05-12 14:01 ` Christoph Lameter
2014-05-12 15:19 ` Jianyu Zhan
2014-05-12 16:05 ` Christoph Lameter
2014-05-12 16:07 ` Christoph Lameter [this message]
-- strict thread matches above, loose matches on Subject: below --
2014-05-12 17:36 Jianyu Zhan
2014-05-12 16:33 Jianyu Zhan
2014-05-12 16:57 ` Christoph Lameter
2014-05-14 3:59 ` Hugh Dickins
2014-05-10 7:15 Jianyu Zhan
2014-05-10 19:51 ` Hugh Dickins
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