From: "Eric W. Biederman" <ebiederm@xmission.com>
To: Luis Chamberlain <mcgrof@kernel.org>
Cc: "Thomas Weißschuh" <linux@weissschuh.net>,
"Joel Granados" <j.granados@samsung.com>,
"Kees Cook" <keescook@chromium.org>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
"Iurii Zaikin" <yzaikin@google.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH v2 00/18] sysctl: constify sysctl ctl_tables
Date: Wed, 13 Dec 2023 12:18:00 -0600 [thread overview]
Message-ID: <87v8927yqv.fsf@email.froward.int.ebiederm.org> (raw)
In-Reply-To: <ZXlhkJm2KjCymcqu@bombadil.infradead.org> (Luis Chamberlain's message of "Tue, 12 Dec 2023 23:47:28 -0800")
Luis Chamberlain <mcgrof@kernel.org> writes:
> On Mon, Dec 11, 2023 at 12:25:10PM +0100, Thomas Weißschuh wrote:
>> Before sending it I'd like to get feedback on the internal rework of the
>> is_empty detection from you and/or Luis.
>>
>> https://git.sr.ht/~t-8ch/linux/commit/ea27507070f3c47be6febebe451bbb88f6ea707e
>> or the attached patch.
>
> Please send as a new patch as RFC and please ensure on the To field is
> first "Eric W. Biederman" <ebiederm@xmission.com> with a bit more
> elaborate commit log as suggested from my review below. If there are
> any hidden things me and Joel could probably miss I'm sure Eric will
> be easily able to spot it.
>
>> From ea27507070f3c47be6febebe451bbb88f6ea707e Mon Sep 17 00:00:00 2001
>> From: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= <linux@weissschuh.net>
>> Date: Sun, 3 Dec 2023 21:56:46 +0100
>> Subject: [PATCH] sysctl: move permanently empty flag to ctl_dir
>> MIME-Version: 1.0
>> Content-Type: text/plain; charset=UTF-8
>> Content-Transfer-Encoding: 8bit
>>
>> Simplify the logic by always keeping the permanently_empty flag on the
>> ctl_dir.
>> The previous logic kept the flag in the leaf ctl_table and from there
>> transferred it to the ctl_table from the directory.
>>
>> This also removes the need to have a mutable ctl_table and will allow
>> the constification of those structs.
> Please elaborate a bit more on this here in your next RFC.
> It's a pretty aggressive cleanup, specially with the new hipster guard()
> call but I'd love Eric's eyeballs on a proper v2.
I will look at a v2 time permitting.
My sense is that changing the locking probably make sense as a separate
patch.
Eric
prev parent reply other threads:[~2023-12-13 18:18 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20231204075237eucas1p27966f7e7da014b5992d3eef89a8fde25@eucas1p2.samsung.com>
2023-12-04 7:52 ` [PATCH v2 00/18] sysctl: constify sysctl ctl_tables Thomas Weißschuh
2023-12-04 7:52 ` [PATCH v2 01/18] watchdog/core: remove sysctl handlers from public header Thomas Weißschuh
2023-12-04 7:52 ` [PATCH v2 02/18] sysctl: delete unused define SYSCTL_PERM_EMPTY_DIR Thomas Weißschuh
2023-12-04 7:52 ` [PATCH v2 03/18] sysctl: drop sysctl_is_perm_empty_ctl_table Thomas Weißschuh
2023-12-07 14:09 ` Joel Granados
2023-12-04 7:52 ` [PATCH v2 04/18] cgroup: bpf: constify ctl_table arguments and fields Thomas Weißschuh
2023-12-04 7:52 ` [PATCH v2 05/18] seccomp: constify ctl_table arguments of utility functions Thomas Weißschuh
2023-12-04 22:12 ` Kees Cook
2023-12-04 7:52 ` [PATCH v2 06/18] hugetlb: " Thomas Weißschuh
2023-12-04 7:52 ` [PATCH v2 07/18] utsname: constify ctl_table arguments of utility function Thomas Weißschuh
2023-12-04 7:52 ` [PATCH v2 08/18] stackleak: don't modify ctl_table argument Thomas Weißschuh
2023-12-04 22:14 ` Kees Cook
2023-12-04 7:52 ` [PATCH v2 09/18] sysctl: treewide: constify ctl_table_root::set_ownership Thomas Weißschuh
2023-12-04 7:52 ` [PATCH v2 10/18] sysctl: treewide: constify ctl_table_root::permissions Thomas Weißschuh
2023-12-04 7:52 ` [PATCH v2 11/18] sysctl: treewide: constify ctl_table_header::ctl_table_arg Thomas Weißschuh
2023-12-04 7:52 ` [PATCH v2 12/18] sysctl: treewide: constify the ctl_table argument of handlers Thomas Weißschuh
2023-12-04 22:17 ` Kees Cook
2023-12-05 9:50 ` kernel test robot
2023-12-05 16:05 ` kernel test robot
2023-12-04 7:52 ` [PATCH v2 13/18] sysctl: move sysctl type to ctl_table_header Thomas Weißschuh
2023-12-05 22:33 ` Luis Chamberlain
2023-12-05 22:41 ` Thomas Weißschuh
2023-12-05 22:50 ` Luis Chamberlain
2023-12-06 5:53 ` Thomas Weißschuh
2023-12-07 12:14 ` Joel Granados
2023-12-07 19:29 ` Thomas Weißschuh
2023-12-21 12:09 ` Joel Granados
2023-12-23 13:04 ` Thomas Weißschuh
2023-12-24 18:51 ` Joel Granados
2023-12-07 12:05 ` Joel Granados
2023-12-07 11:31 ` Joel Granados
2023-12-04 7:52 ` [PATCH v2 14/18] sysctl: move internal interfaces to const struct ctl_table Thomas Weißschuh
2023-12-04 7:52 ` [PATCH v2 15/18] sysctl: allow registration of " Thomas Weißschuh
2023-12-04 7:52 ` [PATCH v2 16/18] const_structs.checkpatch: add ctl_table Thomas Weißschuh
2023-12-04 7:52 ` [PATCH v2 17/18] sysctl: make ctl_table sysctl_mount_point const Thomas Weißschuh
2023-12-04 7:52 ` [PATCH v2 18/18] sysctl: constify standard sysctl tables Thomas Weißschuh
2023-12-05 5:50 ` [PATCH v2 00/18] sysctl: constify sysctl ctl_tables Luis Chamberlain
2023-12-05 8:04 ` Thomas Weißschuh
2023-12-05 17:16 ` Thomas Weißschuh
2023-12-05 22:27 ` Luis Chamberlain
2023-12-07 11:23 ` Joel Granados
2023-12-07 11:19 ` Joel Granados
2023-12-07 19:23 ` Thomas Weißschuh
2023-12-07 11:05 ` Joel Granados
2023-12-07 10:43 ` Joel Granados
2023-12-07 19:19 ` Thomas Weißschuh
2023-12-08 9:59 ` Joel Granados
2023-12-11 11:25 ` Thomas Weißschuh
2023-12-12 9:09 ` Joel Granados
2023-12-13 7:51 ` Luis Chamberlain
2023-12-15 16:40 ` Thomas Weißschuh
2023-12-15 17:05 ` Julia Lawall
2023-12-17 12:02 ` Joel Granados
2023-12-17 22:10 ` Thomas Weißschuh
2023-12-18 21:21 ` Luis Chamberlain
2023-12-19 19:29 ` Thomas Weißschuh
2023-12-19 20:39 ` Julia Lawall
2023-12-19 21:09 ` Luis Chamberlain
2023-12-19 21:21 ` Julia Lawall
2023-12-20 0:09 ` Luis Chamberlain
2023-12-20 7:39 ` Julia Lawall
2023-12-20 14:34 ` Luis Chamberlain
2023-12-19 23:04 ` Julia Lawall
2023-12-21 12:44 ` Joel Granados
2023-12-21 12:36 ` Joel Granados
2023-12-21 12:12 ` Joel Granados
2023-12-13 7:47 ` Luis Chamberlain
2023-12-13 18:18 ` Eric W. Biederman [this message]
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