linux-ext4 - Re: [PATCH v6 35/40] fs: introduce MOUNT_ATTR

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Message-ID: <20210122173440.GA20821@lst.de>
Date:   Fri, 22 Jan 2021 18:34:40 +0100
From:   Christoph Hellwig <hch@....de>
To:     Christian Brauner <christian.brauner@...ntu.com>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        Christoph Hellwig <hch@....de>, linux-fsdevel@...r.kernel.org,
        John Johansen <john.johansen@...onical.com>,
        James Morris <jmorris@...ei.org>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        Dmitry Kasatkin <dmitry.kasatkin@...il.com>,
        Stephen Smalley <stephen.smalley.work@...il.com>,
        Casey Schaufler <casey@...aufler-ca.com>,
        Arnd Bergmann <arnd@...db.de>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
        Geoffrey Thomas <geofft@...reload.com>,
        Mrunal Patel <mpatel@...hat.com>,
        Josh Triplett <josh@...htriplett.org>,
        Andy Lutomirski <luto@...nel.org>,
        Theodore Tso <tytso@....edu>, Alban Crequy <alban@...volk.io>,
        Tycho Andersen <tycho@...ho.ws>,
        David Howells <dhowells@...hat.com>,
        James Bottomley <James.Bottomley@...senpartnership.com>,
        Seth Forshee <seth.forshee@...onical.com>,
        Stéphane Graber <stgraber@...ntu.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Aleksa Sarai <cyphar@...har.com>,
        Lennart Poettering <lennart@...ttering.net>,
        "Eric W. Biederman" <ebiederm@...ssion.com>, smbarber@...omium.org,
        Phil Estes <estesp@...il.com>, Serge Hallyn <serge@...lyn.com>,
        Kees Cook <keescook@...omium.org>,
        Todd Kjos <tkjos@...gle.com>, Paul Moore <paul@...l-moore.com>,
        Jonathan Corbet <corbet@....net>,
        containers@...ts.linux-foundation.org,
        linux-security-module@...r.kernel.org, linux-api@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org,
        linux-integrity@...r.kernel.org, selinux@...r.kernel.org,
        Mauricio Vásquez Bernal 
        <mauricio@...volk.io>
Subject: Re: [PATCH v6 35/40] fs: introduce MOUNT_ATTR_IDMAP

On Fri, Jan 22, 2021 at 06:33:40PM +0100, Christoph Hellwig wrote:
> >  /*
> >   * mount_setattr()
> > @@ -127,9 +128,10 @@ struct mount_attr {
> >  	__u64 attr_set;
> >  	__u64 attr_clr;
> >  	__u64 propagation;
> > +	__u64 userns_fd;
> >  };
> >  
> >  /* List of all mount_attr versions. */
> > -#define MOUNT_ATTR_SIZE_VER0	24 /* sizeof first published struct */
> > +#define MOUNT_ATTR_SIZE_VER0	32 /* sizeof first published struct */
> 
> I think this hunk needs to go into the patch adding the structure.

But except for that the patch looks fine:

Reviewed-by: Christoph Hellwig <hch@....de>