From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Morton <akpm@linux-foundation.org>
Date: Mon, 23 Jan 2023 10:59:45 -0800
Subject: [Cluster-devel] return an ERR_PTR from __filemap_get_folio v2
In-Reply-To: <20230122072006.GA3654@lst.de>
References: <20230121065755.1140136-1-hch@lst.de>
 <20230121170641.121f4224a0e8304765bb4738@linux-foundation.org>
 <20230122072006.GA3654@lst.de>
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On Sun, 22 Jan 2023 08:20:06 +0100 Christoph Hellwig <hch@lst.de> wrote:

> On Sat, Jan 21, 2023 at 05:06:41PM -0800, Andrew Morton wrote:
> > This patchset doesn't apply to fs/btrfs/ because linux-next contains
> > this 6+ month-old commit:
> 
> Hmm.  It was literally written against linux-next as of last morning,
> which does not have that commit.

Confused.  According to 
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/fs/btrfs/disk-io.c#n4023

it's there today.  wait_dev_supers() has been foliofied.