linux-kernel - Re: [PATCH mm-unstable v2 1/6] mm: Add folio_estimated

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Message-ID: <560a0204-5f4e-07af-61be-26e949fe6f20@intel.com>
Date:   Sat, 28 Jan 2023 21:20:14 +0800
From:   "Yin, Fengwei" <fengwei.yin@...el.com>
To:     David Hildenbrand <david@...hat.com>,
        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 v2 1/6] mm: Add folio_estimated_mapcount()



On 1/26/2023 4:37 PM, David Hildenbrand wrote:
> Thinking about it, I guess "folio_estimated_sharers()" might be what we actually want to name it. Then you can comment how we estimate sharers by looking at into how many page tables the first subpage is currently mapped, and assume the same holds true for the other subpages. 
Vote for 'folio_estimated_sharers()'. If better method
other than checking mapcount is found in the future, it's
easy to update the implementation without change the API
name.


Regards
Yin, Fengwei