From: Christoph Hellwig <hch@infradead.org>
To: Christian Brauner <brauner@kernel.org>
Cc: NeilBrown <neil@brown.name>,
Christoph Hellwig <hch@infradead.org>,
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Subject: Re: [PATCH 00/29] fs: require filesystems to explicitly opt-in to nfsd export support
Date: Wed, 21 Jan 2026 01:58:57 -0800 [thread overview]
Message-ID: <aXCjYY9tVKWv29fN@infradead.org> (raw)
In-Reply-To: <20260120-hacken-revision-88209121ac2c@brauner>
On Tue, Jan 20, 2026 at 11:31:54AM +0100, Christian Brauner wrote:
> It is very much fine for a filesystems to support file handles without
> wanting to support exporting via NFS. That is especially true for
> in-kernel pseudo filesystems.
I'm still amazed at this statement. "Wanting to export" is not
something for the file system to decide on in any kind of sane
layering. The file systems exports features, and layers higher
in the stack make use of it. We just need to be precise in describing
In-kernel code will then we so nice to respect it. But for userspace
even then all bets are off.
next prev parent reply other threads:[~2026-01-21 9:59 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-15 17:47 Jeff Layton
2026-01-15 17:47 ` [PATCH 01/29] exportfs: add new EXPORT_OP_STABLE_HANDLES flag Jeff Layton
2026-01-16 10:45 ` Jan Kara
2026-01-15 17:47 ` [PATCH 02/29] tmpfs: add EXPORT_OP_STABLE_HANDLES flag to export operations Jeff Layton
2026-01-16 10:47 ` Jan Kara
2026-01-15 17:47 ` [PATCH 03/29] ext4: " Jeff Layton
2026-01-16 2:22 ` Theodore Tso
2026-01-16 10:46 ` Jan Kara
2026-01-15 17:47 ` [PATCH 04/29] ext2: " Jeff Layton
2026-01-16 10:46 ` Jan Kara
2026-01-15 17:47 ` [PATCH 05/29] erofs: " Jeff Layton
2026-01-15 17:47 ` [PATCH 06/29] efs: " Jeff Layton
2026-01-15 17:47 ` [PATCH 07/29] xfs: " Jeff Layton
2026-01-15 17:47 ` [PATCH 08/29] ceph: " Jeff Layton
2026-01-15 19:16 ` Viacheslav Dubeyko
2026-01-15 17:47 ` [PATCH 09/29] btrfs: " Jeff Layton
2026-01-15 17:47 ` [PATCH 10/29] befs: " Jeff Layton
2026-01-15 17:47 ` [PATCH 11/29] ufs: " Jeff Layton
2026-01-15 17:47 ` [PATCH 12/29] udf: " Jeff Layton
2026-01-16 10:47 ` Jan Kara
2026-01-15 17:47 ` [PATCH 13/29] affs: " Jeff Layton
2026-01-15 17:47 ` [PATCH 14/29] squashfs: " Jeff Layton
2026-01-15 17:47 ` [PATCH 15/29] smb/client: " Jeff Layton
2026-01-15 19:26 ` Amir Goldstein
2026-01-15 17:47 ` [PATCH 16/29] ovl: " Jeff Layton
2026-01-15 18:21 ` Amir Goldstein
2026-01-15 17:47 ` [PATCH 17/29] orangefs: " Jeff Layton
2026-01-15 17:47 ` [PATCH 18/29] ocfs2: " Jeff Layton
2026-01-16 10:47 ` Jan Kara
2026-01-15 17:47 ` [PATCH 19/29] ntfs3: " Jeff Layton
2026-01-15 17:47 ` [PATCH 20/29] nilfs2: " Jeff Layton
2026-01-19 8:39 ` Ryusuke Konishi
2026-01-15 17:47 ` [PATCH 21/29] nfs: " Jeff Layton
2026-01-15 17:47 ` [PATCH 22/29] jfs: " Jeff Layton
2026-01-15 22:09 ` Dave Kleikamp
2026-01-15 17:47 ` [PATCH 23/29] jffs2: " Jeff Layton
2026-01-18 15:36 ` Richard Weinberger
2026-01-15 17:47 ` [PATCH 24/29] isofs: " Jeff Layton
2026-01-16 10:48 ` Jan Kara
2026-01-15 17:47 ` [PATCH 25/29] gfs2: " Jeff Layton
2026-01-15 17:47 ` [PATCH 26/29] fuse: " Jeff Layton
2026-01-15 18:54 ` Amir Goldstein
2026-01-15 19:46 ` Jeff Layton
2026-01-15 17:47 ` [PATCH 27/29] fat: " Jeff Layton
2026-01-15 17:47 ` [PATCH 28/29] f2fs: " Jeff Layton
2026-01-15 17:48 ` [PATCH 29/29] nfsd: only allow filesystems that set EXPORT_OP_STABLE_HANDLES Jeff Layton
2026-01-15 19:23 ` Amir Goldstein
2026-01-16 12:36 ` Jeff Layton
2026-01-16 14:46 ` Amir Goldstein
2026-01-16 15:13 ` Jeff Layton
2026-01-15 18:17 ` [PATCH 00/29] fs: require filesystems to explicitly opt-in to nfsd export support Amir Goldstein
2026-01-15 18:29 ` Jeff Layton
2026-01-18 23:23 ` NeilBrown
2026-01-19 6:41 ` Christoph Hellwig
2026-01-19 7:22 ` NeilBrown
2026-01-19 7:25 ` Christoph Hellwig
2026-01-19 9:27 ` Christian Brauner
2026-01-19 20:45 ` NeilBrown
2026-01-20 7:38 ` Christoph Hellwig
2026-01-20 9:27 ` NeilBrown
2026-01-20 10:34 ` Christian Brauner
2026-01-21 9:48 ` Christoph Hellwig
2026-01-21 10:34 ` NeilBrown
2026-01-21 14:27 ` Jeff Layton
2026-01-21 14:47 ` Christoph Hellwig
2026-01-21 15:18 ` Jeff Layton
2026-01-22 6:37 ` Christoph Hellwig
2026-01-22 12:12 ` Jeff Layton
2026-01-22 17:04 ` Darrick J. Wong
2026-01-21 12:37 ` Jeff Layton
2026-01-20 9:04 ` Christian Brauner
2026-01-20 9:41 ` NeilBrown
2026-01-20 10:31 ` Christian Brauner
2026-01-20 12:50 ` Jeff Layton
2026-01-21 3:58 ` NeilBrown
2026-01-21 11:56 ` Jeff Layton
2026-01-21 18:59 ` Amir Goldstein
2026-01-21 10:00 ` Christoph Hellwig
2026-01-21 10:01 ` Christoph Hellwig
2026-01-21 9:58 ` Christoph Hellwig [this message]
2026-01-21 9:52 ` Christoph Hellwig
2026-01-19 12:30 ` Jeff Layton
2026-01-21 4:10 ` NeilBrown
2026-01-15 18:31 ` Chuck Lever
2026-01-15 19:14 ` Amir Goldstein
2026-01-15 19:31 ` Amir Goldstein
2026-01-15 19:37 ` Chuck Lever
2026-01-15 19:47 ` Amir Goldstein
2026-01-15 21:09 ` Dave Chinner
2026-01-15 21:37 ` Chuck Lever
2026-01-15 22:40 ` David Laight
2026-01-19 7:56 ` Christoph Hellwig
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