linux-kernel - Re: [PATCH 2/6] cgroup: Allocate cgroup_file_ctx for kernfs_open

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Message-ID: <CAHk-=wjpO7=Nk3JRHUWOvsR3v688S25MM+88q3=tP1d5iN1zfw@mail.gmail.com>
Date:   Fri, 10 Dec 2021 11:14:46 -0800
From:   Linus Torvalds <torvalds@...uxfoundation.org>
To:     Tejun Heo <tj@...nel.org>
Cc:     "Eric W. Biederman" <ebiederm@...ssion.com>,
        Michal Koutny <mkoutny@...e.com>, Jens Axboe <axboe@...nel.dk>,
        Kees Cook <keescook@...omium.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jim Newsome <jnewsome@...project.org>,
        Alexey Gladkov <legion@...nel.org>,
        Andy Lutomirski <luto@...capital.net>,
        Jann Horn <jannh@...gle.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Security Officers <security@...nel.org>,
        Kernel Team <kernel-team@...com>
Subject: Re: [PATCH 2/6] cgroup: Allocate cgroup_file_ctx for kernfs_open_file->priv

On Fri, Dec 10, 2021 at 11:06 AM Tejun Heo <tj@...nel.org> wrote:
>
> Just so that I'm understanding you correctly. The following is what I was
> suggesting. ie. just dropping the union and making the iterator embedded:

Oh, I thought that by keeping them separate you meant still keeping the union.

But you just meant separating them into their own "namespace" sub-structures.

That's fine by me, I don't think it matters, and if you find the
namespacing helpful go right ahead.

             Linus