From: Arnd Bergmann <arnd@arndb.de>
To: y2038@lists.linaro.org
Cc: Dave Chinner <david@fromorbit.com>,
linux-fsdevel@vger.kernel.org,
Deepa Dinamani <deepa.kernel@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [Y2038] [RFC 02/15] vfs: Change all structures to support 64 bit time
Date: Thu, 14 Jan 2016 23:54:36 +0100 [thread overview]
Message-ID: <4774139.hV6lmEpfqG@wuerfel> (raw)
In-Reply-To: <4096827.pGyVFmGqbD@wuerfel>
On Thursday 14 January 2016 23:46:16 Arnd Bergmann wrote:
>
> I'm not following the line of thought here. We have some users
> that want ext4 to mount old file system images without long
> inodes writable, because they don't care about the 2038 problem.
> We also have other users that want to force the same file system
> image to be read-only because they want to ensure that it does
> not stop working correctly when the time overflow happens while
> the fs is mounted.
>
> If you don't want a compile-time option for it, how do you suggest
> we decide which case we have?
In case that came across wrong, I'm assuming that the first
user also wants all the system calls enabled that pass 32-bit
time_t values, while the second one wants them all left out from
the kernel to ensure that no user space program gets incorrect
data. This could be done using a sysctl of course, but I still
think we want a compile-time option for the syscalls for clarity,
and I would simply use the same compile-time option to determine
the behavior of the file system, network protocols and device
drivers that deal with 32-bit timestamps outside of the kernel.
Arnd
next prev parent reply other threads:[~2016-01-14 22:54 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-07 5:35 [RFC 00/15] Add 64 bit timestamp support Deepa Dinamani
2016-01-07 5:35 ` [RFC 01/15] fs: add Kconfig entry CONFIG_FS_USES_64BIT_TIME Deepa Dinamani
2016-01-07 5:35 ` [RFC 02/15] vfs: Change all structures to support 64 bit time Deepa Dinamani
2016-01-10 23:03 ` Dave Chinner
2016-01-12 5:42 ` Deepa Dinamani
2016-01-12 8:29 ` Dave Chinner
2016-01-12 9:27 ` [Y2038] " Arnd Bergmann
2016-01-13 6:27 ` Dave Chinner
2016-01-13 9:20 ` Arnd Bergmann
2016-01-13 9:20 ` Arnd Bergmann
2016-01-13 16:33 ` Deepa Dinamani
2016-01-13 21:04 ` Dave Chinner
2016-01-14 16:53 ` [Y2038] " Arnd Bergmann
2016-01-14 18:00 ` Deepa Dinamani
2016-01-14 21:00 ` Dave Chinner
2016-01-14 22:46 ` Arnd Bergmann
2016-01-14 22:54 ` Arnd Bergmann [this message]
2016-01-15 2:27 ` Dave Chinner
2016-01-15 17:01 ` Arnd Bergmann
2016-01-15 22:41 ` Dave Chinner
2016-01-15 2:49 ` Dave Chinner
2016-01-15 16:50 ` Arnd Bergmann
2016-01-16 19:14 ` Andreas Dilger
2016-01-16 23:36 ` Arnd Bergmann
2016-01-17 2:30 ` Andreas Dilger
2016-01-18 6:09 ` Deepa Dinamani
2016-01-18 10:56 ` Arnd Bergmann
2016-01-18 17:40 ` Deepa Dinamani
2016-01-18 19:53 ` Arnd Bergmann
2016-01-18 21:14 ` Dave Chinner
2016-01-18 21:46 ` Arnd Bergmann
2016-01-19 1:38 ` Dave Chinner
2016-01-19 5:27 ` Deepa Dinamani
2016-01-19 20:49 ` Dave Chinner
2016-01-19 22:25 ` Arnd Bergmann
2016-01-20 5:12 ` Deepa Dinamani
2016-01-20 15:04 ` Deepa Dinamani
2016-01-20 23:06 ` Dave Chinner
2016-01-20 23:17 ` [Y2038] " Arnd Bergmann
2016-01-27 6:26 ` Deepa Dinamani
2016-01-15 5:03 ` Deepa Dinamani
2016-01-07 5:36 ` [RFC 03/15] kernel: time: Add macros and functions " Deepa Dinamani
2016-01-07 5:36 ` [RFC 04/15] vfs: Add support for vfs code to use " Deepa Dinamani
2016-01-07 5:36 ` [RFC 05/15] fs: cifs: Add support for cifs " Deepa Dinamani
2016-01-07 5:36 ` [RFC 06/15] fs: fat: convert fat to " Deepa Dinamani
2016-01-07 5:36 ` [RFC 07/15] fs: ext4: convert to use " Deepa Dinamani
2016-01-07 5:36 ` [RFC 08/15] fs: Enable " Deepa Dinamani
2016-01-07 5:36 ` [RFC 09/15] fs: cifs: replace inode_timespec with timespec64 Deepa Dinamani
2016-01-07 5:36 ` [RFC 10/15] fs: fat: " Deepa Dinamani
2016-01-07 5:36 ` [RFC 11/15] fs: ext4: " Deepa Dinamani
2016-01-07 5:36 ` [RFC 12/15] vfs: remove inode_timespec and timespec references Deepa Dinamani
2016-01-07 5:36 ` [RFC 13/15] kernel: time: change inode_timespec to timespec64 Deepa Dinamani
2016-01-07 8:50 ` Michael Adam
2016-01-07 10:42 ` Deepa Dinamani
2016-01-07 5:36 ` [RFC 14/15] vfs: Remove inode_timespec aliases Deepa Dinamani
2016-01-07 5:36 ` [RFC 15/15] fs: Drop CONFIG_FS_USES_64BIT_TIME Deepa Dinamani
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