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From: Christoph Hellwig <hch@lst.de>
To: changfengnan <changfengnan@bytedance.com>
Cc: Christoph Hellwig <hch@lst.de>,
	Joanne Koong <joannelkoong@gmail.com>,
	Christian Brauner <brauner@kernel.org>,
	"Darrick J . Wong" <djwong@kernel.org>,
	linux-fsdevel@vger.kernel.org, kbusch@kernel.org,
	Matthew Wilcox <willy@infradead.org>, Jan Kara <jack@suse.cz>,
	Jonathan Corbet <corbet@lwn.net>, David Sterba <dsterba@suse.com>,
	Dan Williams <djbw@kernel.org>, Gao Xiang <xiang@kernel.org>,
	Namjae Jeon <linkinjeon@kernel.org>,
	Theodore Ts'o <tytso@mit.edu>, Jaegeuk Kim <jaegeuk@kernel.org>,
	Miklos Szeredi <miklos@szeredi.hu>,
	Andreas Gruenbacher <agruenba@redhat.com>,
	Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>,
	Hyunchul Lee <hyc.lee@gmail.com>,
	Konstantin Komarov <almaz.alexandrovich@paragon-software.com>,
	Carlos Maiolino <cem@kernel.org>,
	Damien Le Moal <dlemoal@kernel.org>
Subject: Re: [PATCH v3 00/20] iomap: convert to in-iter iomap_next() model
Date: Wed, 22 Jul 2026 11:03:50 +0200	[thread overview]
Message-ID: <20260722090350.GC30516@lst.de> (raw)
In-Reply-To: <d9210bcdf73fbe1ac8b6ec132865609a3ed68688.7d28bf40.2201.47ab.bf41.5b700aefabf7@bytedance.com>

On Wed, Jul 22, 2026 at 03:04:24PM +0800, changfengnan wrote:
> Hi Christoph,
> I tested the simple direct I/O path and did not observe any performance
> degradation.

Thanks.  But no improvement either?

I'll respin this to sit before the iter_next conversion and will
send it out.


  reply	other threads:[~2026-07-22  9:03 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-20 21:01 [PATCH v3 00/20] iomap: convert to in-iter iomap_next() model Joanne Koong
2026-07-20 21:01 ` [PATCH v3 01/20] iomap: split iomap_iter() logic into iomap_iter_next() Joanne Koong
2026-07-22 12:05   ` Christoph Hellwig
2026-07-20 21:01 ` [PATCH v3 02/20] iomap: add ->iomap_next() Joanne Koong
2026-07-22 12:06   ` Christoph Hellwig
2026-07-20 21:01 ` [PATCH v3 03/20] iomap: skip the finishing iomap_iter() on the simple DIO read fast path Joanne Koong
2026-07-20 21:01 ` [PATCH v3 04/20] xfs: convert iomap ops to ->iomap_next() Joanne Koong
2026-07-20 21:01 ` [PATCH v3 05/20] btrfs: " Joanne Koong
2026-07-21 11:39   ` David Sterba
2026-07-20 21:01 ` [PATCH v3 06/20] ntfs3: " Joanne Koong
2026-07-20 21:01 ` [PATCH v3 07/20] ntfs: " Joanne Koong
2026-07-21 10:12   ` Namjae Jeon
2026-07-20 21:01 ` [PATCH v3 08/20] ext4: " Joanne Koong
2026-07-21  7:36   ` Baokun Li
2026-07-20 21:01 ` [PATCH v3 09/20] erofs: " Joanne Koong
2026-07-20 21:01 ` [PATCH v3 10/20] zonefs: " Joanne Koong
2026-07-20 23:52   ` Damien Le Moal
2026-07-20 21:01 ` [PATCH v3 11/20] ext2: " Joanne Koong
2026-07-20 21:01 ` [PATCH v3 12/20] block: " Joanne Koong
2026-07-22 12:07   ` Christoph Hellwig
2026-07-20 21:01 ` [PATCH v3 13/20] f2fs: " Joanne Koong
2026-07-20 21:01 ` [PATCH v3 14/20] gfs2: " Joanne Koong
2026-07-20 21:01 ` [PATCH v3 15/20] hpfs: " Joanne Koong
2026-07-20 21:01 ` [PATCH v3 16/20] fuse: " Joanne Koong
2026-07-20 21:01 ` [PATCH v3 17/20] exfat: " Joanne Koong
2026-07-21 10:10   ` Namjae Jeon
2026-07-20 21:02 ` [PATCH v3 18/20] iomap: remove ->iomap_begin()/->iomap_end() legacy path Joanne Koong
2026-07-21 11:38   ` changfengnan
2026-07-20 21:02 ` [PATCH v3 19/20] iomap: pass iomap_iter_next_fn directly instead of struct iomap_ops Joanne Koong
2026-07-20 21:02 ` [PATCH v3 20/20] Documentation: iomap: update docs to reflect iomap_iter_next model Joanne Koong
2026-07-21 14:28 ` [PATCH v3 00/20] iomap: convert to in-iter iomap_next() model Christoph Hellwig
2026-07-22  7:04   ` changfengnan
2026-07-22  9:03     ` Christoph Hellwig [this message]
2026-07-22  9:05       ` changfengnan
2026-07-22 15:04   ` Joanne Koong

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