linux-kernel - Re: [PATCH v4 03/12] dm: Treat alloc_dax() -EOPNOTSUPP failure as non-fatal

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Message-ID: <15939d13-76d0-4a47-84c0-1b194530e145@efficios.com>
Date: Thu, 8 Feb 2024 17:07:47 -0500
From: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To: Dan Williams <dan.j.williams@...el.com>, Arnd Bergmann <arnd@...db.de>,
 Dave Chinner <david@...morbit.com>
Cc: linux-kernel@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>,
 Linus Torvalds <torvalds@...ux-foundation.org>,
 Vishal Verma <vishal.l.verma@...el.com>, Dave Jiang <dave.jiang@...el.com>,
 Matthew Wilcox <willy@...radead.org>, Russell King <linux@...linux.org.uk>,
 linux-arch@...r.kernel.org, linux-cxl@...r.kernel.org,
 linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
 linux-xfs@...r.kernel.org, dm-devel@...ts.linux.dev, nvdimm@...ts.linux.dev,
 linux-s390@...r.kernel.org, Alasdair Kergon <agk@...hat.com>,
 Mike Snitzer <snitzer@...nel.org>, Mikulas Patocka <mpatocka@...hat.com>
Subject: Re: [PATCH v4 03/12] dm: Treat alloc_dax() -EOPNOTSUPP failure as
 non-fatal

On 2024-02-08 16:34, Dan Williams wrote:
[...]
> Similar feedback as the pmem change, lets not propagate the mistake that
> alloc_dax() could return NULL, none of the callers of alloc_dax()
> properly handled NULL and it was just luck that none of the use cases
> tried to use alloc_dax() in the CONFIG_DAX=n case.

Done.

Thanks,

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com