From: Christoph Hellwig <hch@infradead.org>
To: Jan Kara <jack@suse.cz>
Cc: Christoph Hellwig <hch@lst.de>,
Namjae Jeon <linkinjeon@kernel.org>,
Sungjong Seo <sj1557.seo@samsung.com>, Jan Kara <jack@suse.com>,
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>,
Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>,
Dave Kleikamp <shaggy@kernel.org>,
Bob Copeland <me@bobcopeland.com>,
linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
jfs-discussion@lists.sourceforge.net,
linux-karma-devel@lists.sourceforge.net, linux-mm@kvack.org
Subject: Re: [PATCH 2/9] ext2: remove ->writepage
Date: Wed, 16 Nov 2022 08:14:15 -0800 [thread overview]
Message-ID: <Y3UMV2mB5BkMM5PY@infradead.org> (raw)
In-Reply-To: <20221114104927.k5x4i4uanxskfs6m@quack3>
On Mon, Nov 14, 2022 at 11:49:27AM +0100, Jan Kara wrote:
> On Sun 13-11-22 17:28:55, Christoph Hellwig wrote:
> > ->writepage is a very inefficient method to write back data, and only
> > used through write_cache_pages or a a fallback when no ->migrate_folio
> > method is present.
> >
> > Signed-off-by: Christoph Hellwig <hch@lst.de>
>
> Looks good! Feel free to add:
The testbot found a problem with this:
ext2_commit_chunk calls write_one_page for the IS_DIRSYNC case,
and write_one_page calls ->writepage.
So I think I need to drop this one for now (none of the other
file systems calls write_one_page). And then think what best
to do about write_one_page/write_one_folio. I suspect just
passing a writepage pointer to them might make most sense,
as they are only used by a few file systems, and the calling
convention with the locked page doesn't lend itself to using
->writepages.
next prev parent reply other threads:[~2022-11-16 16:14 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-13 16:28 start removing writepage instances Christoph Hellwig
2022-11-13 16:28 ` [PATCH 1/9] extfat: remove ->writepage Christoph Hellwig
2022-11-14 11:07 ` Namjae Jeon
2022-11-13 16:28 ` [PATCH 2/9] ext2: " Christoph Hellwig
2022-11-14 10:49 ` Jan Kara
2022-11-16 16:14 ` Christoph Hellwig [this message]
2022-11-16 18:20 ` [PATCH 2/9] ext2: remove ->writepageo Jan Kara
2022-11-17 6:31 ` Christoph Hellwig
2022-11-21 10:07 ` Jan Kara
2022-11-13 16:28 ` [PATCH 3/9] fat: remove ->writepage Christoph Hellwig
2022-11-13 16:28 ` [PATCH 4/9] hfs: " Christoph Hellwig
2023-12-14 19:01 ` Matthew Wilcox
2023-12-15 4:59 ` Christoph Hellwig
2022-11-13 16:28 ` [PATCH 5/9] hfsplus: " Christoph Hellwig
2022-11-13 16:28 ` [PATCH 6/9] hpfs: " Christoph Hellwig
2022-11-13 16:29 ` [PATCH 7/9] jfs: " Christoph Hellwig
2022-11-14 14:29 ` Dave Kleikamp
2022-11-13 16:29 ` [PATCH 8/9] omfs: " Christoph Hellwig
2022-11-15 2:34 ` Bob Copeland
2022-11-13 16:29 ` [PATCH 9/9] udf: " Christoph Hellwig
2022-11-14 10:52 ` Jan Kara
2022-11-14 20:29 ` start removing writepage instances Johannes Weiner
2022-11-16 18:39 ` Ritesh Harjani (IBM)
2022-12-02 10:22 ` Christoph Hellwig
2022-11-17 21:39 ` David Howells
2022-11-17 21:41 ` David Howells
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