From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Date: Fri, 27 Jan 2023 02:24:29 +0900
Subject: [Cluster-devel] [PATCH 7/7] mm: return an ERR_PTR from
 __filemap_get_folio
In-Reply-To: <20230121065755.1140136-8-hch@lst.de>
References: <20230121065755.1140136-1-hch@lst.de>
 <20230121065755.1140136-8-hch@lst.de>
Message-ID: <CAKFNMonfM+=1vbqKgS3feW7Xyh=P6UdDu0RrnOYQrb+WhN+_Vw@mail.gmail.com>
List-Id: <cluster-devel.redhat.com>
To: cluster-devel.redhat.com
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit

On Sat, Jan 21, 2023 at 3:59 PM Christoph Hellwig wrote:
>
> Instead of returning NULL for all errors, distinguish between:
>
>  - no entry found and not asked to allocated (-ENOENT)
>  - failed to allocate memory (-ENOMEM)
>  - would block (-EAGAIN)
>
> so that callers don't have to guess the error based on the passed
> in flags.
>
> Also pass through the error through the direct callers:
> filemap_get_folio, filemap_lock_folio filemap_grab_folio
> and filemap_get_incore_folio.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---

For

>  fs/nilfs2/page.c         |  6 +++---

Acked-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>

Thanks,
Ryusuke Konishi