linux-kernel - Re: [PATCH] mm/rmap: convert __page_{set, check}_anon

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Message-ID: <ZDasYRqHLayZXc6E@casper.infradead.org>
Date:   Wed, 12 Apr 2023 14:04:33 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Yajun Deng <yajun.deng@...ux.dev>
Cc:     akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/rmap: convert __page_{set, check}_anon_rmap() to
 folios

On Wed, Apr 12, 2023 at 10:18:11AM +0800, Yajun Deng wrote:
> The 2nd parameter in __page_set_anon_rmap() is only used by
> SetPageAnonExclusive(), so there is no need to put
> SetPageAnonExclusive() in  __page_set_anon_rmap().
> 
> Remove SetPageAnonExclusive() from __page_set_anon_rmap() and modify
> __page_set_anon_rmap() to __folio_set_anon_rmap().
> 
> Since __page_check_anon_rmap() needs a folio, we can directly use
> and change it to __folio_check_anon_rmap().

I do not think this is an improvement.