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From: Muchun Song <muchun.song@linux.dev>
To: Kaitao Cheng <kaitao.cheng@linux.dev>
Cc: Dan Williams <djbw@kernel.org>,
	Matthew Wilcox <willy@infradead.org>, Jan Kara <jack@suse.cz>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Christian Brauner <brauner@kernel.org>,
	linux-fsdevel@vger.kernel.org, nvdimm@lists.linux.dev,
	linux-kernel@vger.kernel.org,
	Kaitao Cheng <chengkaitao@kylinos.cn>
Subject: Re: [PATCH] fs/dax: Remove redundant deferred list initialization
Date: Thu, 3 Sep 2026 14:13:55 +0800	[thread overview]
Message-ID: <3D5079CF-6FB3-4ABC-A164-D42920A19DA7@linux.dev> (raw)
In-Reply-To: <20260903050207.7015-1-kaitao.cheng@linux.dev>



> On Sep 3, 2026, at 13:02, Kaitao Cheng <kaitao.cheng@linux.dev> wrote:
> 
> From: Kaitao Cheng <chengkaitao@kylinos.cn>
> 
> prep_compound_page() calls prep_compound_head(), which initializes
> folio->_deferred_list for compound folios with an order greater than one.
> Therefore, dax_folio_init() initializes the list twice for large DAX
> folios.
> 
> Remove the redundant initialization from dax_folio_init(). This leaves
> the behavior unchanged and keeps compound folio initialization
> centralized in prep_compound_head().
> 
> Signed-off-by: Kaitao Cheng <chengkaitao@kylinos.cn>

Acked-by: Muchun Song <muchun.song@linux.dev>

Thanks.


  reply	other threads:[~2026-09-03  6:14 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-03  5:02 Kaitao Cheng
2026-09-03  6:13 ` Muchun Song [this message]
2026-09-04 10:56 ` Christian Brauner

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