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Date:   Wed, 26 Oct 2022 20:49:18 +0100
From:   Matthew Wilcox <willy@infradead.org>
To:     Zhaoyang Huang <huangzhaoyang@gmail.com>
Cc:     Dave Chinner <david@fromorbit.com>,
        "zhaoyang.huang" <zhaoyang.huang@unisoc.com>,
        Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, ke.wang@unisoc.com,
        steve.kang@unisoc.com, baocong.liu@unisoc.com,
        linux-fsdevel@vger.kernel.org
Subject: Re: [RFC PATCH] mm: move xa forward when run across zombie page
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On Wed, Oct 19, 2022 at 01:48:37PM +0800, Zhaoyang Huang wrote:
> hint from my side. The original problem I raised is under v5.15 where
> there is no folio yet.

I really wish you'd stop dropping hints and give all of the information
you have so I can try to figure this out withouot sending individual
emails for every little piece.

Do you have CONFIG_READ_ONLY_THP_FOR_FS=y in your .config?