linux-kernel - Re: [PATCH mm-unstable 5/5] mm/mempolicy: Convert migrate_page_add() to migrate_folio

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Message-ID: <3a39025d-a0d4-3132-125f-0e679d5f0118@intel.com>
Date:   Sat, 21 Jan 2023 11:21:50 +0800
From:   "Yin, Fengwei" <fengwei.yin@...el.com>
To:     Vishal Moola <vishal.moola@...il.com>
CC:     <linux-mm@...ck.org>, <akpm@...ux-foundation.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH mm-unstable 5/5] mm/mempolicy: Convert migrate_page_add()
 to migrate_folio_add()



On 1/21/2023 3:41 AM, Vishal Moola wrote:
> My understanding of the purpose of this check is to avoid migrating
> pages shared with other processes. Meaning if a folio (or any pages
> within) are mapped to different processes we would want to skip that
> folio.

This is my understanding also. But check whether a large file folio is
mapped to different process is not very direct. Thanks.

Regards
Yin, Fengwei