linux-kernel - Re: [PATCH] proc: register filesystem last

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Date:   Sat, 10 Mar 2018 03:06:34 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH] proc: register filesystem last

On Fri, Mar 09, 2018 at 02:49:38PM -0800, Andrew Morton wrote:
> On Sat, 10 Mar 2018 01:27:09 +0300 Alexey Dobriyan <adobriyan@...il.com> wrote:
> 
> > As soon as register_filesystem() exits, filesystem can be mounted.
> > It is better to present fully operational /proc.
> > 
> > Of course it doesn't matter because /proc is not modular
> > but do it anyway.
> > 
> > Drop error check, it should be handled by panicking.
> 
> So... shouldn't we add a call to panic()?

via FS_PANIC flag, yes. I have a patch somewhere.
There are 104 filesystems ATM, some internal, some not.
Some modular, some not.