linux-kernel - Re: [PATCH 2/9] mnt: expose pointer to init_mnt

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Message-ID: <20250919-sense-evaluieren-eade772e2e6c@brauner>
Date: Fri, 19 Sep 2025 12:05:16 +0200
From: Christian Brauner <brauner@...nel.org>
To: Jan Kara <jack@...e.cz>
Cc: linux-fsdevel@...r.kernel.org, Amir Goldstein <amir73il@...il.com>, 
	Josef Bacik <josef@...icpanda.com>, Jeff Layton <jlayton@...nel.org>, Mike Yuan <me@...dnzj.com>, 
	Zbigniew Jędrzejewski-Szmek <zbyszek@...waw.pl>, Lennart Poettering <mzxreary@...inter.de>, 
	Daan De Meyer <daan.j.demeyer@...il.com>, Aleksa Sarai <cyphar@...har.com>, 
	Alexander Viro <viro@...iv.linux.org.uk>, Tejun Heo <tj@...nel.org>, Johannes Weiner <hannes@...xchg.org>, 
	Michal Koutný <mkoutny@...e.com>, Jakub Kicinski <kuba@...nel.org>, 
	Anna-Maria Behnsen <anna-maria@...utronix.de>, Frederic Weisbecker <frederic@...nel.org>, 
	Thomas Gleixner <tglx@...utronix.de>, cgroups@...r.kernel.org, linux-kernel@...r.kernel.org, 
	netdev@...r.kernel.org
Subject: Re: [PATCH 2/9] mnt: expose pointer to init_mnt_ns

On Wed, Sep 17, 2025 at 06:28:37PM +0200, Jan Kara wrote:
> On Wed 17-09-25 12:28:01, Christian Brauner wrote:
> > There's various scenarios where we need to know whether we are in the
> > initial set of namespaces or not to e.g., shortcut permission checking.
> > All namespaces expose that information. Let's do that too.
> > 
> > Signed-off-by: Christian Brauner <brauner@...nel.org>

I've changed this so it behaves exactly like all the other init
namespaces. See appended.

View attachment "v2-0001-mnt-expose-pointer-to-init_mnt_ns.patch" of type "text/x-diff" (2641 bytes)