Re: [PATCH v5 26/42] fcntl: handle idmapped mounts

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Subject: Re: [PATCH v5 26/42] fcntl: handle idmapped mounts

From: Christoph Hellwig <hch@xxxxxxxxxxxxx>

Date: Tue, 19 Jan 2021 09:41:47 +0000

Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, John Johansen <john.johansen@xxxxxxxxxxxxx>, James Morris <jmorris@xxxxxxxxx>, Mimi Zohar <zohar@xxxxxxxxxxxxx>, Dmitry Kasatkin <dmitry.kasatkin@xxxxxxxxx>, Stephen Smalley <stephen.smalley.work@xxxxxxxxx>, Casey Schaufler <casey@xxxxxxxxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Andreas Dilger <adilger.kernel@xxxxxxxxx>, OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>, Geoffrey Thomas <geofft@xxxxxxxxxxxxx>, Mrunal Patel <mpatel@xxxxxxxxxx>, Josh Triplett <josh@xxxxxxxxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Theodore Tso <tytso@xxxxxxx>, Alban Crequy <alban@xxxxxxxxxx>, Tycho Andersen <tycho@xxxxxxxx>, David Howells <dhowells@xxxxxxxxxx>, James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>, Seth Forshee <seth.forshee@xxxxxxxxxxxxx>, St??phane Graber <stgraber@xxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Aleksa Sarai <cyphar@xxxxxxxxxx>, Lennart Poettering <lennart@xxxxxxxxxxxxxx>, "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>, smbarber@xxxxxxxxxxxx, Phil Estes <estesp@xxxxxxxxx>, Serge Hallyn <serge@xxxxxxxxxx>, Kees Cook <keescook@xxxxxxxxxxxx>, Todd Kjos <tkjos@xxxxxxxxxx>, Paul Moore <paul@xxxxxxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, containers@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-security-module@xxxxxxxxxxxxxxx, linux-api@xxxxxxxxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, linux-xfs@xxxxxxxxxxxxxxx, linux-integrity@xxxxxxxxxxxxxxx, selinux@xxxxxxxxxxxxxxx, Christoph Hellwig <hch@xxxxxx>

In-reply-to: <20210112220124.837960-27-christian.brauner@ubuntu.com>

References: <20210112220124.837960-1-christian.brauner@ubuntu.com> <20210112220124.837960-27-christian.brauner@ubuntu.com>

This can use file_user_ns.

Otherwise looks good:

Reviewed-by: Christoph Hellwig <hch@xxxxxx>