From: Christoph Hellwig <hch@infradead.org>
To: Jeff Layton <jlayton@kernel.org>
Cc: Jan Kara <jack@suse.cz>, Christoph Hellwig <hch@infradead.org>,
"Darrick J. Wong" <djwong@kernel.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Chandan Babu R <chandan.babu@oracle.com>,
Theodore Ts'o <tytso@mit.edu>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Chris Mason <clm@fb.com>, Josef Bacik <josef@toxicpanda.com>,
David Sterba <dsterba@suse.com>, Hugh Dickins <hughd@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
kernel-team@fb.com, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org,
linux-btrfs@vger.kernel.org, linux-mm@kvack.org,
linux-nfs@vger.kernel.org
Subject: Re: [PATCH 01/10] fs: turn inode ctime fields into a single ktime_t
Date: Tue, 2 Jul 2024 05:04:33 -0700 [thread overview]
Message-ID: <ZoPs0TfTEktPaCHo@infradead.org> (raw)
In-Reply-To: <958080f6de517cf9d0a1994e3ca500f23599ca33.camel@kernel.org>
On Tue, Jul 02, 2024 at 07:44:19AM -0400, Jeff Layton wrote:
> Complaining about it is fairly simple. We could just throw a pr_warn in
> inode_set_ctime_to_ts when the time comes back as KTIME_MAX. This might
> also be what we need to do for filesystems like NFS, where a future
> ctime on the server is not necessarily a problem for the client.
>
> Refusing to load the inode on disk-based filesystems is harder, but is
> probably possible. There are ~90 calls to inode_set_ctime_to_ts in the
> kernel, so we'd need to vet the places that are loading times from disk
> images or the like and fix them to return errors in this situation.
>
> Is warning acceptable, or do we really need to reject inodes that have
> corrupt timestamps like this?
inode_set_ctime_to_ts should return an error if things are out of range.
How do we currently catch this when it comes from userland?
next prev parent reply other threads:[~2024-07-02 12:04 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-27 1:00 [PATCH 00/10] fs: multigrain timestamp redux Jeff Layton
2024-06-27 1:00 ` [PATCH 01/10] fs: turn inode ctime fields into a single ktime_t Jeff Layton
2024-07-01 22:49 ` Darrick J. Wong
2024-07-02 0:22 ` Jeff Layton
2024-07-02 7:37 ` Christoph Hellwig
2024-07-02 9:56 ` Jeff Layton
2024-07-02 10:19 ` Jan Kara
2024-07-02 11:42 ` Christian Brauner
2024-07-02 11:44 ` Jeff Layton
2024-07-02 12:04 ` Christoph Hellwig [this message]
2024-07-02 12:09 ` Jeff Layton
2024-07-02 12:15 ` Christoph Hellwig
2024-07-02 12:21 ` Jeff Layton
2024-07-02 15:12 ` Christoph Hellwig
2024-07-02 15:58 ` Jeff Layton
2024-07-03 5:26 ` Christoph Hellwig
2024-07-03 5:27 ` Christoph Hellwig
2024-07-02 16:18 ` Christian Brauner
2024-06-27 1:00 ` [PATCH 02/10] fs: uninline inode_get_ctime and inode_set_ctime_to_ts Jeff Layton
2024-06-27 1:00 ` [PATCH 03/10] fs: tracepoints for inode_needs_update_time " Jeff Layton
2024-06-27 1:00 ` [PATCH 04/10] fs: add infrastructure for multigrain timestamps Jeff Layton
2024-06-27 15:02 ` Chuck Lever
2024-06-27 15:35 ` Jeff Layton
2024-06-27 1:00 ` [PATCH 05/10] fs: add percpu counters to count fine vs. coarse timestamps Jeff Layton
2024-06-27 1:00 ` [PATCH 06/10] fs: have setattr_copy handle multigrain timestamps appropriately Jeff Layton
2024-06-27 1:00 ` [PATCH 07/10] xfs: switch to multigrain timestamps Jeff Layton
2024-06-27 1:00 ` [PATCH 08/10] ext4: " Jeff Layton
2024-06-27 1:00 ` [PATCH 09/10] btrfs: convert " Jeff Layton
2024-06-27 1:00 ` [PATCH 10/10] tmpfs: add support for " Jeff Layton
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