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From: Linus Torvalds <torvalds@linuxfoundation.org>
To: Tejun Heo <tj@kernel.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
	Michal Koutny <mkoutny@suse.com>, Jens Axboe <axboe@kernel.dk>,
	Kees Cook <keescook@chromium.org>,
	Oleg Nesterov <oleg@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Jim Newsome <jnewsome@torproject.org>,
	Alexey Gladkov <legion@kernel.org>,
	Andy Lutomirski <luto@amacapital.net>,
	Jann Horn <jannh@google.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Security Officers <security@kernel.org>,
	Kernel Team <kernel-team@fb.com>
Subject: Re: [PATCH 2/6] cgroup: Allocate cgroup_file_ctx for kernfs_open_file->priv
Date: Mon, 13 Dec 2021 11:29:36 -0800	[thread overview]
Message-ID: <CAHk-=wgQQhQakEgKeCcDp==wk__pu32=k-1m63prWx+XjzyhHg@mail.gmail.com> (raw)
In-Reply-To: <20211213191833.916632-3-tj@kernel.org>

On Mon, Dec 13, 2021 at 11:18 AM Tejun Heo <tj@kernel.org> wrote:
>
> v2: union dropped from cgroup_file_ctx and the procs iterator is embedded in
>     cgroup_file_ctx as suggested by Linus.

Thanks.

Looking at the patch, I mostly like the end result, although it
highlights how odd that __cgroup_procs_start() thing is.

I wonder if that 'started' flag could be removed, and the
css_task_iter_start() thing could be done at allocation time?

But I may just be confused. This is not a NAK, just a "that pattern
looks slightly odd to me".

               Linus

  reply	other threads:[~2021-12-13 19:30 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-13 19:18 [PATCHSET v2 cgroup/for-5.16-fixes] cgroup: Use open-time creds and namespace for migration perm checks Tejun Heo
2021-12-13 19:18 ` [PATCH 1/6] cgroup: Use open-time credentials for process migraton " Tejun Heo
2021-12-14 17:03   ` Michal Koutný
2021-12-13 19:18 ` [PATCH 2/6] cgroup: Allocate cgroup_file_ctx for kernfs_open_file->priv Tejun Heo
2021-12-13 19:29   ` Linus Torvalds [this message]
2021-12-13 19:56     ` Tejun Heo
2021-12-14 17:03   ` Michal Koutný
2021-12-14 19:44     ` [PATCH v3 " Tejun Heo
2021-12-15  7:37       ` Michal Koutný
2021-12-16  9:22   ` [cgroup] 27183b4e07: WARNING:at_mm/slab.c:#___cache_free kernel test robot
2021-12-16  9:43     ` Michal Koutný
2021-12-13 19:18 ` [PATCH 3/6] cgroup: Use open-time cgroup namespace for process migration perm checks Tejun Heo
2021-12-14 17:04   ` Michal Koutný
2021-12-13 19:18 ` [PATCH 4/6] selftests: cgroup: Make cg_create() use 0755 for permission instead of 0644 Tejun Heo
2021-12-14 17:04   ` Michal Koutný
2021-12-13 19:18 ` [PATCH 5/6] selftests: cgroup: Test open-time credential usage for migration checks Tejun Heo
2021-12-14 17:04   ` Michal Koutný
2021-12-13 19:18 ` [PATCH 6/6] selftests: cgroup: Test open-time cgroup namespace " Tejun Heo
2021-12-14 17:04   ` Michal Koutný
2022-01-06 21:05 ` [PATCHSET v2 cgroup/for-5.16-fixes] cgroup: Use open-time creds and namespace for migration perm checks Tejun Heo
  -- strict thread matches above, loose matches on Subject: below --
2021-12-09 21:47 [PATCHSET " Tejun Heo
2021-12-09 21:47 ` [PATCH 2/6] cgroup: Allocate cgroup_file_ctx for kernfs_open_file->priv Tejun Heo
2021-12-10 17:53   ` Linus Torvalds
2021-12-10 18:38     ` Tejun Heo
2021-12-10 18:45       ` Linus Torvalds
2021-12-10 19:06         ` Tejun Heo
2021-12-10 19:14           ` Linus Torvalds

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