From: Christoph Hellwig <hch@lst.de>
To: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>,
Andrew Morton <akpm@linux-foundation.org>,
Matthew Wilcox <willy@infradead.org>,
Hugh Dickins <hughd@google.com>,
linux-afs@lists.infradead.org, linux-btrfs@vger.kernel.org,
linux-ext4@vger.kernel.org, cluster-devel@redhat.com,
linux-mm@kvack.org, linux-xfs@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-nilfs@vger.kernel.org
Subject: Re: [PATCH 9/9] mm: return an ERR_PTR from __filemap_get_folio
Date: Wed, 18 Jan 2023 17:42:08 +0100 [thread overview]
Message-ID: <20230118164208.GA7584@lst.de> (raw)
In-Reply-To: <CAKFNMomcjvUSh-nS1MqptYdiT-1frRsmHgx2mHBBm_588kprrQ@mail.gmail.com>
On Wed, Jan 18, 2023 at 09:39:08PM +0900, Ryusuke Konishi wrote:
> > Also pass through the error through the direct callers:
>
> > filemap_get_folio, filemap_lock_folio filemap_grab_folio
> > and filemap_get_incore_folio.
>
> As for the comments describing the return values of these callers,
> isn't it necessary to rewrite the value from NULL in case of errors ?
Yes, thanks for catching this.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: cluster-devel.redhat.com
Subject: [Cluster-devel] [PATCH 9/9] mm: return an ERR_PTR from __filemap_get_folio
Date: Wed, 18 Jan 2023 17:42:08 +0100 [thread overview]
Message-ID: <20230118164208.GA7584@lst.de> (raw)
In-Reply-To: <CAKFNMomcjvUSh-nS1MqptYdiT-1frRsmHgx2mHBBm_588kprrQ@mail.gmail.com>
On Wed, Jan 18, 2023 at 09:39:08PM +0900, Ryusuke Konishi wrote:
> > Also pass through the error through the direct callers:
>
> > filemap_get_folio, filemap_lock_folio filemap_grab_folio
> > and filemap_get_incore_folio.
>
> As for the comments describing the return values of these callers,
> isn't it necessary to rewrite the value from NULL in case of errors ?
Yes, thanks for catching this.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
To: Ryusuke Konishi
<konishi.ryusuke-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Matthew Wilcox <willy-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Hugh Dickins <hughd-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
linux-afs-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-btrfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-ext4-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
cluster-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
linux-xfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-nilfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 9/9] mm: return an ERR_PTR from __filemap_get_folio
Date: Wed, 18 Jan 2023 17:42:08 +0100 [thread overview]
Message-ID: <20230118164208.GA7584@lst.de> (raw)
In-Reply-To: <CAKFNMomcjvUSh-nS1MqptYdiT-1frRsmHgx2mHBBm_588kprrQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Wed, Jan 18, 2023 at 09:39:08PM +0900, Ryusuke Konishi wrote:
> > Also pass through the error through the direct callers:
>
> > filemap_get_folio, filemap_lock_folio filemap_grab_folio
> > and filemap_get_incore_folio.
>
> As for the comments describing the return values of these callers,
> isn't it necessary to rewrite the value from NULL in case of errors ?
Yes, thanks for catching this.
next prev parent reply other threads:[~2023-01-18 16:43 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-18 9:43 return an ERR_PTR from __filemap_get_folio Christoph Hellwig
2023-01-18 9:43 ` [Cluster-devel] " Christoph Hellwig
2023-01-18 9:43 ` [PATCH 1/9] mm: don't look at xarray value entries in split_huge_pages_in_file Christoph Hellwig
2023-01-18 9:43 ` Christoph Hellwig
2023-01-18 9:43 ` [Cluster-devel] " Christoph Hellwig
2023-01-18 13:47 ` Matthew Wilcox
2023-01-18 13:47 ` Matthew Wilcox
2023-01-18 13:47 ` [Cluster-devel] " Matthew Wilcox
2023-01-18 9:43 ` [PATCH 2/9] mm: make mapping_get_entry available outside of filemap.c Christoph Hellwig
2023-01-18 9:43 ` Christoph Hellwig
2023-01-18 9:43 ` [Cluster-devel] " Christoph Hellwig
2023-01-18 13:49 ` Matthew Wilcox
2023-01-18 13:49 ` Matthew Wilcox
2023-01-18 13:49 ` [Cluster-devel] " Matthew Wilcox
2023-01-18 9:43 ` [PATCH 3/9] mm: use filemap_get_entry in filemap_get_incore_folio Christoph Hellwig
2023-01-18 9:43 ` Christoph Hellwig
2023-01-18 9:43 ` [Cluster-devel] " Christoph Hellwig
2023-01-18 13:49 ` Matthew Wilcox
2023-01-18 13:49 ` Matthew Wilcox
2023-01-18 13:49 ` [Cluster-devel] " Matthew Wilcox
2023-01-18 9:43 ` [PATCH 4/9] shmem: remove shmem_get_partial_folio Christoph Hellwig
2023-01-18 9:43 ` Christoph Hellwig
2023-01-18 9:43 ` [Cluster-devel] " Christoph Hellwig
2023-01-18 13:57 ` Brian Foster
2023-01-18 13:57 ` Brian Foster
2023-01-18 13:57 ` [Cluster-devel] " Brian Foster
2023-01-18 16:43 ` Christoph Hellwig
2023-01-18 16:43 ` Christoph Hellwig
2023-01-18 16:43 ` [Cluster-devel] " Christoph Hellwig
2023-01-18 16:50 ` Brian Foster
2023-01-18 16:50 ` Brian Foster
2023-01-18 16:50 ` [Cluster-devel] " Brian Foster
2023-01-18 9:43 ` [PATCH 5/9] shmem: open code the page cache lookup in shmem_get_folio_gfp Christoph Hellwig
2023-01-18 9:43 ` Christoph Hellwig
2023-01-18 9:43 ` [Cluster-devel] " Christoph Hellwig
2023-01-18 9:43 ` [PATCH 6/9] mm: remove FGP_ENTRY Christoph Hellwig
2023-01-18 9:43 ` Christoph Hellwig
2023-01-18 9:43 ` [Cluster-devel] " Christoph Hellwig
2023-01-18 9:43 ` [PATCH 7/9] gfs2: handle a NULL folio in gfs2_jhead_process_page Christoph Hellwig
2023-01-18 9:43 ` Christoph Hellwig
2023-01-18 9:43 ` [Cluster-devel] " Christoph Hellwig
2023-01-18 16:00 ` Matthew Wilcox
2023-01-18 16:00 ` Matthew Wilcox
2023-01-18 16:00 ` [Cluster-devel] " Matthew Wilcox
2023-01-18 16:24 ` Andreas Gruenbacher
2023-01-18 16:24 ` Andreas Gruenbacher
2023-01-18 16:24 ` [Cluster-devel] " Andreas Gruenbacher
2023-01-18 16:42 ` Christoph Hellwig
2023-01-18 16:42 ` Christoph Hellwig
2023-01-18 9:43 ` [PATCH 8/9] btrfs: handle a NULL folio in extent_range_redirty_for_io Christoph Hellwig
2023-01-18 9:43 ` Christoph Hellwig
2023-01-18 9:43 ` [Cluster-devel] " Christoph Hellwig
2023-01-18 16:08 ` Matthew Wilcox
2023-01-18 16:08 ` Matthew Wilcox
2023-01-18 16:08 ` [Cluster-devel] " Matthew Wilcox
2023-01-18 16:42 ` Christoph Hellwig
2023-01-18 16:42 ` Christoph Hellwig
2023-01-18 16:42 ` [Cluster-devel] " Christoph Hellwig
2023-01-18 9:43 ` [PATCH 9/9] mm: return an ERR_PTR from __filemap_get_folio Christoph Hellwig
2023-01-18 9:43 ` Christoph Hellwig
2023-01-18 9:43 ` [Cluster-devel] " Christoph Hellwig
2023-01-18 12:39 ` Ryusuke Konishi
2023-01-18 12:39 ` Ryusuke Konishi
2023-01-18 12:39 ` [Cluster-devel] " Ryusuke Konishi
2023-01-18 16:42 ` Christoph Hellwig [this message]
2023-01-18 16:42 ` Christoph Hellwig
2023-01-18 16:42 ` [Cluster-devel] " Christoph Hellwig
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