linux-kernel - Re: [PATCH 4/4] mm/migrate, swap: drop usage of folio

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Message-ID: <CACePvbXTG3qN64D-zu4-N6126ZNFCKqvMuUhrxW=aXnCkrOb_A@mail.gmail.com>
Date: Wed, 8 Oct 2025 14:03:07 -0700
From: Chris Li <chrisl@...nel.org>
To: Kairui Song <ryncsn@...il.com>
Cc: linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>, 
	Kemeng Shi <shikemeng@...weicloud.com>, Kairui Song <kasong@...cent.com>, 
	Nhat Pham <nphamcs@...il.com>, Baoquan He <bhe@...hat.com>, Barry Song <baohua@...nel.org>, 
	Baolin Wang <baolin.wang@...ux.alibaba.com>, David Hildenbrand <david@...hat.com>, 
	"Matthew Wilcox (Oracle)" <willy@...radead.org>, Ying Huang <ying.huang@...ux.alibaba.com>, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] mm/migrate, swap: drop usage of folio_index

Thanks for the cleanup.

Agree with the other fix suggested by Nhat regarding swap cache vs page cache.

On Mon, Oct 6, 2025 at 1:03 PM Kairui Song <ryncsn@...il.com> wrote:
>
> From: Kairui Song <kasong@...cent.com>
>
> This helper was used when swap cache was mixed with swap cache. Now they
> are completely separate from each other, access to the swap cache is all
> wrapped by the swap_cache_* helpers, which expect the folio's swap entry
> as a parameter.
>
> This helper is no longer used, remove the last redundant user and drop it.
>
> Signed-off-by: Kairui Song <kasong@...cent.com>
> ---
>  mm/migrate.c |  4 ++--
>  mm/swap.h    | 21 ---------------------

Nice.

Acked-by: Chris Li <chrisl@...nel.org>

Chris