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Date:   Sat, 21 Jan 2023 11:21:50 +0800
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Subject: Re: [PATCH mm-unstable 5/5] mm/mempolicy: Convert migrate_page_add()
 to migrate_folio_add()
To:     Vishal Moola <vishal.moola@gmail.com>
CC:     <linux-mm@kvack.org>, <akpm@linux-foundation.org>,
        <linux-kernel@vger.kernel.org>
References: <20230118232219.27038-1-vishal.moola@gmail.com>
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From:   "Yin, Fengwei" <fengwei.yin@intel.com>
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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