linux-kernel - Re: [PATCH -v3 04/10] mm, THP, swap: Add swap cluster allocate/free functions

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Message-Id: <57D0FBCE.50706@linux.vnet.ibm.com>
Date:   Thu, 08 Sep 2016 11:19:02 +0530
From:   Anshuman Khandual <khandual@...ux.vnet.ibm.com>
To:     "Huang, Ying" <ying.huang@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>
CC:     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>,
        Hugh Dickins <hughd@...gle.com>, Shaohua Li <shli@...nel.org>,
        Minchan Kim <minchan@...nel.org>,
        Rik van Riel <riel@...hat.com>
Subject: Re: [PATCH -v3 04/10] mm, THP, swap: Add swap cluster allocate/free
 functions

On 09/07/2016 10:16 PM, Huang, Ying wrote:
> From: Huang Ying <ying.huang@...el.com>
> 
> The swap cluster allocation/free functions are added based on the
> existing swap cluster management mechanism for SSD.  These functions
> don't work for the rotating hard disks because the existing swap cluster
> management mechanism doesn't work for them.  The hard disks support may
> be added if someone really need it.  But that needn't be included in
> this patchset.
> 
> This will be used for the THP (Transparent Huge Page) swap support.
> Where one swap cluster will hold the contents of each THP swapped out.

Which tree this series is based against ? This patch does not apply
on the mainline kernel today.