linux-kernel - Re: [PATCH v1] fs/dax: fix folio splitting issue by resetting old folio order + _nr

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Message-ID: <Z_gYIU7Nq-YDYnc7@aschofie-mobl2.lan>
Date: Thu, 10 Apr 2025 12:12:33 -0700
From: Alison Schofield <alison.schofield@...el.com>
To: David Hildenbrand <david@...hat.com>
CC: <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
	<linux-fsdevel@...r.kernel.org>, <nvdimm@...ts.linux.dev>, Alexander Viro
	<viro@...iv.linux.org.uk>, Christian Brauner <brauner@...nel.org>, Jan Kara
	<jack@...e.cz>, Dan Williams <dan.j.williams@...el.com>, Matthew Wilcox
	<willy@...radead.org>, Andrew Morton <akpm@...ux-foundation.org>, "Alistair
 Popple" <apopple@...dia.com>, Christoph Hellwig <hch@...radead.org>
Subject: Re: [PATCH v1] fs/dax: fix folio splitting issue by resetting old
 folio order + _nr_pages

On Thu, Apr 10, 2025 at 11:10:20AM +0200, David Hildenbrand wrote:
> Alison reports an issue with fsdax when large extends end up using
> large ZONE_DEVICE folios:
>

Passes the ndctl/dax unit tests.

Tested-by: Alison Schofield <alison.schofield@...el.com>

snip