linux-kernel - Re: [PATCH v6 2/2] init/do_mounts.c: create second mount for initramfs

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Message-ID: <20210727123701.zlcrrf4p2fsmeeas@wittgenstein>
Date:   Tue, 27 Jul 2021 14:37:01 +0200
From:   Christian Brauner <christian.brauner@...ntu.com>
To:     Menglong Dong <menglong8.dong@...il.com>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        Kees Cook <keescook@...omium.org>,
        Sami Tolvanen <samitolvanen@...gle.com>, johan@...nel.org,
        ojeda@...nel.org, jeyu@...nel.org, masahiroy@...nel.org,
        joe@...ches.com, Jan Kara <jack@...e.cz>, hare@...e.de,
        Jens Axboe <axboe@...nel.dk>, tj@...nel.org,
        gregkh@...uxfoundation.org, song@...nel.org,
        NeilBrown <neilb@...e.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Barret Rhoden <brho@...gle.com>, f.fainelli@...il.com,
        palmerdabbelt@...gle.com, wangkefeng.wang@...wei.com,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>, vbabka@...e.cz,
        Alexander Potapenko <glider@...gle.com>, pmladek@...e.com,
        johannes.berg@...el.com,
        "Eric W. Biederman" <ebiederm@...ssion.com>, jojing64@...il.com,
        terrelln@...com, geert@...ux-m68k.org,
        linux-fsdevel@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        Luis Chamberlain <mcgrof@...nel.org>, arnd@...db.de,
        Chris Down <chris@...isdown.name>, mingo@...nel.org,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Josh Triplett <josh@...htriplett.org>
Subject: Re: [PATCH v6 2/2] init/do_mounts.c: create second mount for
 initramfs

On Tue, Jul 27, 2021 at 08:24:03PM +0800, Menglong Dong wrote:
> Hello Christian,
> 
> On Thu, Jun 17, 2021 at 10:38 PM Christian Brauner
> <christian.brauner@...ntu.com> wrote:
> >
> [...]
> >
> > Hey Menglong,
> >
> > Since we're very close to the next kernel release it's unlikely that
> > anything will happen before the merge window has closed.
> > Otherwise I think we're close. I haven't had the time to test yet but if
> > nothing major comes up I'll pick it up and route it through my tree.
> > We need to be sure there's no regressions for anyone using this.
> >
> 
> Seems that it has been a month, and is it ok to move a little
> further? (knock-knock :/)

Yep, sorry.
When I tested this early during the merge window it regressed booting a
regular system for me meaning if I compiled a kernel with this feature
enabled it complained about not being being able to open an initial
console and it dropped me right into initramfs instead of successfully
booting. I haven't looked into what this is caused or how to fix it for
lack of time.