From: Jeff Layton <jlayton@kernel.org>
To: Amir Goldstein <amir73il@gmail.com>, Jan Kara <jack@suse.cz>
Cc: Christian Brauner <brauner@kernel.org>,
Miklos Szeredi <miklos@szeredi.hu>,
linux-unionfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-api@vger.kernel.org
Subject: Re: [RFC][PATCH 0/4] Prepare for supporting more filesystems with fanotify
Date: Thu, 27 Apr 2023 11:13:33 -0400 [thread overview]
Message-ID: <dafbff6baa201b8af862ee3faf7fe948d2a026ab.camel@kernel.org> (raw)
In-Reply-To: <20230425130105.2606684-1-amir73il@gmail.com>
On Tue, 2023-04-25 at 16:01 +0300, Amir Goldstein wrote:
> Jan,
>
> Following up on the FAN_REPORT_ANY_FID proposal [1], here is a shot at an
> alternative proposal to seamlessly support more filesystems.
>
> While fanotify relaxes the requirements for filesystems to support
> reporting fid to require only the ->encode_fh() operation, there are
> currently no new filesystems that meet the relaxed requirements.
>
> I will shortly post patches that allow overlayfs to meet the new
> requirements with default overlay configurations.
>
> The overlay and vfs/fanotify patch sets are completely independent.
> The are both available on my github branch [2] and there is a simple
> LTP test variant that tests reporting fid from overlayfs [3], which
> also demonstrates the minor UAPI change of name_to_handle_at(2) for
> requesting a non-decodeable file handle by userspace.
>
> Thanks,
> Amir.
>
> [1] https://lore.kernel.org/linux-fsdevel/20230417162721.ouzs33oh6mb7vtft@quack3/
> [2] https://github.com/amir73il/linux/commits/exportfs_encode_fid
> [3] https://github.com/amir73il/ltp/commits/exportfs_encode_fid
>
> Amir Goldstein (4):
> exportfs: change connectable argument to bit flags
> exportfs: add explicit flag to request non-decodeable file handles
> exportfs: allow exporting non-decodeable file handles to userspace
> fanotify: support reporting non-decodeable file handles
>
> Documentation/filesystems/nfs/exporting.rst | 4 +--
> fs/exportfs/expfs.c | 29 ++++++++++++++++++---
> fs/fhandle.c | 20 ++++++++------
> fs/nfsd/nfsfh.c | 5 ++--
> fs/notify/fanotify/fanotify.c | 4 +--
> fs/notify/fanotify/fanotify_user.c | 6 ++---
> fs/notify/fdinfo.c | 2 +-
> include/linux/exportfs.h | 18 ++++++++++---
> include/uapi/linux/fcntl.h | 5 ++++
> 9 files changed, 67 insertions(+), 26 deletions(-)
>
This set looks fairly benign to me, so ACK on the general concept.
I am starting to dislike how the AT_* flags are turning into a bunch of
flags that only have meanings on certain syscalls. I don't see a cleaner
way to handle it though.
--
Jeff Layton <jlayton@kernel.org>
next prev parent reply other threads:[~2023-04-27 15:13 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-25 13:01 [RFC][PATCH 0/4] Prepare for supporting more filesystems with fanotify Amir Goldstein
2023-04-25 13:01 ` [RFC][PATCH 1/4] exportfs: change connectable argument to bit flags Amir Goldstein
2023-04-26 14:16 ` Chuck Lever
2023-04-25 13:01 ` [RFC][PATCH 2/4] exportfs: add explicit flag to request non-decodeable file handles Amir Goldstein
2023-04-26 14:18 ` Chuck Lever
2023-04-27 15:00 ` Jeff Layton
2023-04-27 15:13 ` Amir Goldstein
2023-04-25 13:01 ` [RFC][PATCH 3/4] exportfs: allow exporting non-decodeable file handles to userspace Amir Goldstein
2023-04-25 13:01 ` [RFC][PATCH 4/4] fanotify: support reporting non-decodeable file handles Amir Goldstein
2023-04-27 11:48 ` Jan Kara
2023-04-27 12:28 ` Amir Goldstein
2023-04-27 14:34 ` Amir Goldstein
2023-04-27 16:34 ` Jan Kara
2023-04-26 13:47 ` [RFC][PATCH 0/4] Prepare for supporting more filesystems with fanotify Chuck Lever
2023-04-27 4:57 ` Amir Goldstein
2023-04-27 15:13 ` Jeff Layton [this message]
2023-04-27 15:52 ` Amir Goldstein
2023-04-27 16:36 ` Jeff Layton
2023-04-27 19:11 ` Amir Goldstein
2023-04-27 19:26 ` Jeff Layton
2023-04-28 11:40 ` Jan Kara
2023-04-28 12:15 ` Jeff Layton
2023-04-28 12:31 ` Jan Kara
2023-04-28 12:33 ` Amir Goldstein
2023-04-29 14:45 ` Chuck Lever
2023-04-29 17:26 ` Amir Goldstein
2023-05-01 18:48 ` Amir Goldstein
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