From: Christoph Hellwig <hch@infradead.org>
To: Jeff Layton <jlayton@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>, Jan Kara <jack@suse.cz>,
"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 08:12:34 -0700 [thread overview]
Message-ID: <ZoQY4jdTc5dHPGGG@infradead.org> (raw)
In-Reply-To: <a11d84a3085c6a6920d086bf8fae1625ceff5764.camel@kernel.org>
On Tue, Jul 02, 2024 at 08:21:42AM -0400, Jeff Layton wrote:
> Many of the existing callers of inode_ctime_to_ts are in void return
> functions. They're just copying data from an internal representation to
> struct inode and assume it always succeeds. For those we'll probably
> have to catch bad ctime values earlier.
>
> So, I think I'll probably have to roll bespoke error handling in all of
> the relevant filesystems if we go this route. There are also
> differences between filesystems -- does it make sense to refuse to load
> an inode with a bogus ctime on NFS or AFS? Probably not.
>
> Hell, it may be simpler to just ditch this patch and reimplement
> mgtimes using the nanosecond fields like the earlier versions did.
Thatdoes for sure sound simpler. What is the big advantage of the
ktime_t? Smaller size?
next prev parent reply other threads:[~2024-07-02 15:12 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
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 [this message]
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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