[PATCH v22 06/12] fs,security: Add sb_delete hook

[James Morris]

On Tue, 27 Oct 2020, Mickaël Salaün wrote:

> From: Mickaël Salaün <mic at linux.microsoft.com>
> 
> The sb_delete security hook is called when shutting down a superblock,
> which may be useful to release kernel objects tied to the superblock's
> lifetime (e.g. inodes).
> 
> This new hook is needed by Landlock to release (ephemerally) tagged
> struct inodes.  This comes from the unprivileged nature of Landlock
> described in the next commit.
> 
> Cc: Al Viro <viro at zeniv.linux.org.uk>
> Cc: James Morris <jmorris at namei.org>
> Cc: Jann Horn <jannh at google.com>
> Cc: Kees Cook <keescook at chromium.org>
> Cc: Serge E. Hallyn <serge at hallyn.com>
> Signed-off-by: Mickaël Salaün <mic at linux.microsoft.com>

Al, Kees, JJ et al, any objections?

-- 
James Morris
<jmorris at namei.org>