linux-kernel - Re: [PATCH v4 11/16] securityfs: Only use simple_pin_fs/simple_release_fs for init_user

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Message-ID: <a71b600f34f66d6eca5c50259529b3fc476880f6.camel@iki.fi>
Date:   Sat, 11 Dec 2021 16:16:36 +0200
From:   Jarkko Sakkinen <jarkko.sakkinen@....fi>
To:     Stefan Berger <stefanb@...ux.ibm.com>,
        linux-integrity@...r.kernel.org
Cc:     zohar@...ux.ibm.com, serge@...lyn.com,
        christian.brauner@...ntu.com, containers@...ts.linux.dev,
        dmitry.kasatkin@...il.com, ebiederm@...ssion.com,
        krzysztof.struczynski@...wei.com, roberto.sassu@...wei.com,
        mpeters@...hat.com, lhinds@...hat.com, lsturman@...hat.com,
        puiterwi@...hat.com, jejb@...ux.ibm.com, jamjoom@...ibm.com,
        linux-kernel@...r.kernel.org, paul@...l-moore.com, rgb@...hat.com,
        linux-security-module@...r.kernel.org, jmorris@...ei.org,
        James Bottomley <James.Bottomley@...senPartnership.com>
Subject: Re: [PATCH v4 11/16] securityfs: Only use
 simple_pin_fs/simple_release_fs for init_user_ns

On Tue, 2021-12-07 at 15:21 -0500, Stefan Berger wrote:
> To prepare for virtualization of SecurityFS, use simple_pin_fs and
> simpe_release_fs only when init_user_ns is active.
> 
> Signed-off-by: Stefan Berger <stefanb@...ux.ibm.com>
> Signed-off-by: James Bottomley <James.Bottomley@...senPartnership.com>

What do you mean by virtualization, and how does this prepare
securityfs for it? The commit message should be way more verbose.

/Jarkko