From: Christoph Hellwig <hch@infradead.org>
To: Amir Goldstein <amir73il@gmail.com>
Cc: "André Almeida" <andrealmeid@igalia.com>,
linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org,
linux-unionfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
kernel-dev@igalia.com, "Miklos Szeredi" <miklos@szeredi.hu>,
"Chris Mason" <clm@fb.com>, "David Sterba" <dsterba@suse.com>,
"Anand Jain" <anand.jain@oracle.com>,
"Guilherme G . Piccoli" <gpiccoli@igalia.com>
Subject: Re: [RFC PATCH 0/1] ovl: brtfs' temp_fsid doesn't work with ovl index=on
Date: Wed, 15 Oct 2025 21:57:56 -0700 [thread overview]
Message-ID: <aPB7VOaDhBtZTD6T@infradead.org> (raw)
In-Reply-To: <CAOQ4uxhrQQmK+tc+eOjm7Pz2u=S6_2cnneyo4mNjVgyA7RNooA@mail.gmail.com>
On Wed, Oct 15, 2025 at 01:09:26PM +0200, Amir Goldstein wrote:
> FWIW this operation already exists in export_operations.
> It is currently only used by pnfs and only implemented by xfs.
> I would nor object for overlayfs to use this method if implemented
> and fall back to copying uuid directly from s_uuid
The get_uuid export operation is specifically about an on-disk superblock
that the pnfs client can match. Overloading it for in-core information
would be very confusing and also problematic if it doesn't exist on-disk
in this format. In retrospective it should be called get_disk_uuid or
something similar.
prev parent reply other threads:[~2025-10-16 4:57 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-14 1:57 [RFC PATCH 0/1] ovl: brtfs' temp_fsid doesn't work with ovl index=on André Almeida
2025-10-14 1:57 ` [RFC PATCH 1/1] ovl: Use fsid as unique identifier for trusted origin André Almeida
2025-10-14 4:39 ` Christoph Hellwig
2025-10-14 5:13 ` Qu Wenruo
2025-10-14 17:40 ` David Sterba
2025-10-14 17:55 ` André Almeida
2025-10-14 23:46 ` Anand Jain
2025-10-15 1:22 ` Christoph Hellwig
2025-10-20 21:43 ` Dave Chinner
2025-10-21 1:16 ` Anand Jain
2025-10-14 19:52 ` kernel test robot
2025-10-15 10:52 ` Amir Goldstein
2025-10-14 5:26 ` [RFC PATCH 0/1] ovl: brtfs' temp_fsid doesn't work with ovl index=on Qu Wenruo
2025-10-14 18:24 ` David Sterba
2025-10-14 21:08 ` Qu Wenruo
2025-10-15 0:05 ` Anand Jain
2025-10-15 4:18 ` Qu Wenruo
2025-10-14 22:04 ` Anand Jain
2025-10-15 11:09 ` Amir Goldstein
2025-10-16 4:57 ` Christoph Hellwig [this message]
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