linux-kernel - Re: [PATCH 0/5] mm/mremap.c: cleanup move_page

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Date:   Sat, 18 Jan 2020 16:07:02 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Wei Yang <richardw.yang@...ux.intel.com>
Cc:     dan.j.williams@...el.com, aneesh.kumar@...ux.ibm.com,
        kirill@...temov.name, yang.shi@...ux.alibaba.com,
        thellstrom@...are.com, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org
Subject: Re: [PATCH 0/5] mm/mremap.c: cleanup move_page_tables() a little

On Sat, 18 Jan 2020 07:22:49 +0800 Wei Yang <richardw.yang@...ux.intel.com> wrote:

> move_page_tables() tries to move page table by PMD or PTE.
> 
> The root reason is if it tries to move PMD, both old and new range should
> be PMD aligned. But current code calculate old range and new range
> separately.  This leads to some redundant check and calculation.
> 
> This cleanup tries to consolidate the range check in one place to reduce
> some extra range handling.

Thanks, I grabbed these, aimed at 5.7-rc1.