linux-kernel - Re: [RFC 2/6] mm/migrate_pages: split unmap_and_move() to _unmap() and

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Message-ID: <e6b4d43d-eea1-5748-bfe3-56f6c9addc7f@linux.alibaba.com>
Date:   Thu, 22 Sep 2022 14:36:34 +0800
From:   Baolin Wang <baolin.wang@...ux.alibaba.com>
To:     Huang Ying <ying.huang@...el.com>, linux-mm@...ck.org
Cc:     linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Zi Yan <ziy@...dia.com>, Yang Shi <shy828301@...il.com>,
        Oscar Salvador <osalvador@...e.de>,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [RFC 2/6] mm/migrate_pages: split unmap_and_move() to _unmap()
 and _move()



On 9/21/2022 2:06 PM, Huang Ying wrote:
> This is a preparation patch to batch the page unmapping and moving
> for the normal pages and THP.
> 
> In this patch, unmap_and_move() is split to migrate_page_unmap() and
> migrate_page_move().  So, we can batch _unmap() and _move() in
> different loops later.  To pass some information between unmap and
> move, the original unused newpage->mapping and newpage->private are
> used.
> 
> Signed-off-by: "Huang, Ying" <ying.huang@...el.com> > Cc: Zi Yan <ziy@...dia.com>
> Cc: Yang Shi <shy828301@...il.com>
> Cc: Baolin Wang <baolin.wang@...ux.alibaba.com>
> Cc: Oscar Salvador <osalvador@...e.de>
> Cc: Matthew Wilcox <willy@...radead.org>
> ---

Looks good to me.
Reviewed-by: Baolin Wang <baolin.wang@...ux.alibaba.com>