linux-kernel - Re: [PATCH RESEND v11 0/8] proc: modernize proc to support multiple private instances

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Date:   Thu, 9 Apr 2020 15:42:36 +0200
From:   Alexey Gladkov <gladkov.alexey@...il.com>
To:     "Eric W. Biederman" <ebiederm@...ssion.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Kernel Hardening <kernel-hardening@...ts.openwall.com>,
        Linux API <linux-api@...r.kernel.org>,
        Linux FS Devel <linux-fsdevel@...r.kernel.org>,
        Linux Security Module <linux-security-module@...r.kernel.org>,
        Akinobu Mita <akinobu.mita@...il.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Alexey Dobriyan <adobriyan@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Lutomirski <luto@...nel.org>,
        Daniel Micay <danielmicay@...il.com>,
        Djalal Harouni <tixxdz@...il.com>,
        "Dmitry V . Levin" <ldv@...linux.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Ingo Molnar <mingo@...nel.org>,
        "J . Bruce Fields" <bfields@...ldses.org>,
        Jeff Layton <jlayton@...chiereds.net>,
        Jonathan Corbet <corbet@....net>,
        Kees Cook <keescook@...omium.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Oleg Nesterov <oleg@...hat.com>,
        David Howells <dhowells@...hat.com>
Subject: Re: [PATCH RESEND v11 0/8] proc: modernize proc to support multiple
 private instances

On Thu, Apr 09, 2020 at 07:59:47AM -0500, Eric W. Biederman wrote:
> Alexey Gladkov <gladkov.alexey@...il.com> writes:
> 
> > Preface:
> > --------
> > This is patchset v11 to modernize procfs and make it able to support multiple
> > private instances per the same pid namespace.
> >
> > This patchset can be applied on top of:
> >
> > git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git
> > 4b871ce26ab2
> 
> 
> 
> Why the resend?
> 
> Nothing happens until the merge window closes with the release of -rc1
> (almost certainly on this coming Sunday).  I goofed and did not act on
> this faster, and so it is my fault this did not make it into linux-next
> before the merge window.  But I am not going to rush this forward.
> 
> 
> 
> You also ignored my review and have not even descibed why it is safe
> to change the type of a filesystem parameter.
> 
> -	fsparam_u32("hidepid",	Opt_hidepid),
> +	fsparam_string("hidepid",	Opt_hidepid),
> 
> 
> Especially in light of people using fsconfig(fd, FSCONFIG_SET_...);
> 
> All I need is someone to point out that fsparam_u32 does not use
> FSCONFIG_SET_BINARY, but FSCONFIG_SET_STRING.

I decided to resend again because I was not sure that the previous
patchset was not lost. I also wanted to ask David to review and explain
about the new API. I in any case did not ignore your question about
changing the type of the parameter.

I guess I was wrong when I sent the whole patchset again. Sorry.

> My apologies for being grumpy but this feels like you are asking me to
> go faster when it is totally inappropriate to do so, while busily
> ignoring my feedback.
> 
> I think this should happen.  But I can't do anything until after -rc1.

I think you misunderstood me. I didn't mean to rush you.

-- 
Rgrds, legion