linux-kernel - Re: [PATCH -v3 03/10] mm, memcg: Support to charge/uncharge multiple swap entries

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Message-ID: <87wpim45se.fsf@yhuang-mobile.sh.intel.com>
Date:   Thu, 08 Sep 2016 11:15:13 -0700
From:   "Huang\, Ying" <ying.huang@...el.com>
To:     Anshuman Khandual <khandual@...ux.vnet.ibm.com>
Cc:     "Huang\, Ying" <ying.huang@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        <tim.c.chen@...el.com>, <dave.hansen@...el.com>,
        <andi.kleen@...el.com>, <aaron.lu@...el.com>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>,
        Andrea Arcangeli <aarcange@...hat.com>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Vladimir Davydov <vdavydov@...tuozzo.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>, Tejun Heo <tj@...nel.org>,
        <cgroups@...r.kernel.org>
Subject: Re: [PATCH -v3 03/10] mm, memcg: Support to charge/uncharge multiple swap entries

Anshuman Khandual <khandual@...ux.vnet.ibm.com> writes:

> On 09/07/2016 10:16 PM, Huang, Ying wrote:
>> From: Huang Ying <ying.huang@...el.com>
>> 
>> This patch make it possible to charge or uncharge a set of continuous
>> swap entries in the swap cgroup.  The number of swap entries is
>> specified via an added parameter.
>> 
>> This will be used for the THP (Transparent Huge Page) swap support.
>> Where a swap cluster backing a THP may be allocated and freed as a
>> whole.  So a set of continuous swap entries (512 on x86_64) backing one
>
> Please use HPAGE_SIZE / PAGE_SIZE instead of hard coded number like 512.

Sure.  Will change it.

Best Regards,
Huang, Ying