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From: Christian Brauner <brauner@kernel.org>
To: Qu Wenruo <wqu@suse.com>
Cc: Christoph Hellwig <hch@infradead.org>,
	Josef Bacik <josef@toxicpanda.com>,
	Qu Wenruo <quwenruo.btrfs@gmx.com>,
	Amir Goldstein <amir73il@gmail.com>, Jan Kara <jack@suse.cz>,
	Chris Mason <clm@fb.com>, David Sterba <dsterba@suse.com>,
	linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 0/3] fanotify support for btrfs sub-volumes
Date: Mon, 6 Nov 2023 10:56:57 +0100	[thread overview]
Message-ID: <20231106-drehung-besagen-7fdd84ca5887@brauner> (raw)
In-Reply-To: <1d08a205-b2c5-4276-b271-088facc142ea@suse.com>

> Another thing is, the st_dev situation has to be kept, as there are too many
> legacy programs that relies on this to distinguish btrfs subvolume
> boundaries, this would never be changed unfortunately, even if we had some
> better solution (like the proposed extra subvolid through statx).

It would retain backwards compatibility as userspace would need to
explicitly query for STATX_SUBVOLUME otherwise they get they fake
st_dev.

> Which I believe the per-subvolume-vfsmount and the automount behavior for
> subvolume can help a lot.

Very much opposed to this at this point. I've seen the code for this in
the prior patchset and it's implication nothing about this makes me want
this.

  reply	other threads:[~2023-11-06  9:57 UTC|newest]

Thread overview: 79+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-10-25 13:50 [PATCH 0/3] fanotify support for btrfs sub-volumes Amir Goldstein
2023-10-25 13:50 ` [PATCH 1/3] fs: define a new super operation to get fsid Amir Goldstein
2023-10-25 13:50 ` [PATCH 2/3] btrfs: implement " Amir Goldstein
2023-10-25 13:50 ` [PATCH 3/3] fanotify: support reporting events with fid on btrfs sub-volumes Amir Goldstein
2023-10-25 15:34 ` [PATCH 0/3] fanotify support for " Christoph Hellwig
2023-10-25 17:04   ` Jan Kara
2023-10-27  5:44     ` Christoph Hellwig
2023-10-27 10:58       ` Jan Kara
2023-10-25 21:06   ` Josef Bacik
2023-10-25 23:02     ` Qu Wenruo
2023-10-26  5:49       ` Amir Goldstein
2023-10-27  5:46     ` Christoph Hellwig
     [not found]       ` <20231027131726.GA2915471@perftesting>
2023-10-28  5:57         ` Amir Goldstein
2023-10-30 13:25         ` Christoph Hellwig
2023-10-31 12:14           ` Christian Brauner
2023-10-31 12:22             ` Christoph Hellwig
2023-10-31 12:50               ` Christian Brauner
2023-10-31 17:06                 ` Christoph Hellwig
2023-11-01  0:03                   ` Qu Wenruo
2023-11-03 14:21                     ` Christoph Hellwig
2023-11-01  8:16                   ` Christian Brauner
2023-11-01  8:41                     ` Qu Wenruo
2023-11-01  9:52                       ` Christian Brauner
2023-11-02  5:13                         ` Josef Bacik
2023-11-02  8:53                           ` Amir Goldstein
2023-11-02  9:48                           ` Christian Brauner
2023-11-02 12:34                             ` Josef Bacik
2023-11-02 17:07                               ` David Sterba
2023-11-02 20:32                                 ` Josef Bacik
2023-11-03  6:56                                 ` Christian Brauner
2023-11-03 13:52                                   ` Josef Bacik
2023-11-02 11:07                           ` Christian Brauner
2023-11-03 14:28                             ` Christoph Hellwig
2023-11-03 15:47                               ` Christian Brauner
2023-11-06  7:53                                 ` Christoph Hellwig
2023-11-06  8:18                                   ` Qu Wenruo
2023-11-06  9:56                                     ` Christian Brauner [this message]
2023-11-06 12:25                                     ` Christoph Hellwig
2023-11-06 10:03                                   ` Christian Brauner
2023-11-06 10:41                                     ` Qu Wenruo
2023-11-06 10:59                                       ` Christian Brauner
2023-11-06 12:30                                         ` Christoph Hellwig
2023-11-06 13:05                                           ` Christian Brauner
2023-11-06 17:10                                             ` Christoph Hellwig
2023-11-07  8:58                                               ` Christian Brauner
2023-11-08  7:56                                                 ` Christoph Hellwig
2023-11-08  8:09                                                   ` Christian Brauner
2023-11-08  8:12                                                     ` Christoph Hellwig
2023-11-08  8:22                                                       ` Christian Brauner
2023-11-08 14:07                                                         ` Christoph Hellwig
2023-11-08 15:57                                                           ` Christian Brauner
2023-11-06 12:29                                     ` Christoph Hellwig
2023-11-06 13:47                                       ` Christian Brauner
2023-11-06 17:13                                         ` Christoph Hellwig
2023-11-06 22:42                                           ` Josef Bacik
2023-11-07  9:06                                             ` Christian Brauner
2023-11-08  7:52                                               ` Christoph Hellwig
2023-11-08  8:27                                                 ` Christian Brauner
2023-11-08 14:08                                                   ` Christoph Hellwig
2023-11-08 16:16                                                     ` Christian Brauner
2023-11-08 16:20                                                       ` Christian Brauner
2023-11-09  6:55                                                         ` Christoph Hellwig
2023-11-09  9:07                                                           ` Christian Brauner
2023-11-09 14:41                                                             ` Christoph Hellwig
2023-11-10  9:33                                                               ` Christian Brauner
2023-11-10 10:31                                                                 ` Amir Goldstein
2023-11-09  6:53                                                       ` Christoph Hellwig
2023-11-08  7:51                                             ` Christoph Hellwig
2023-11-08 11:08                                               ` Jan Kara
2023-11-08 14:11                                                 ` Christoph Hellwig
2023-11-06  9:03                                 ` Jan Kara
2023-11-06  9:52                                   ` Christian Brauner
2023-11-06 12:22                                     ` Jan Kara
2023-11-03 14:23                       ` Christoph Hellwig
2023-11-03 14:22                     ` Christoph Hellwig
2023-10-25 17:17 ` Amir Goldstein
2023-10-25 18:02   ` Amir Goldstein
2023-10-26 12:17     ` Jan Kara
2023-10-26 12:36       ` Amir Goldstein

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