[PATCH v4] vfs, security: Fix automount superblock LSM init problem, preventing NFS sb sharing

[David Howells]

Anna Schumaker <anna at kernel.org> wrote:

> > +       fc->lsm_set = true;
> 
> I was wondering if there is any way to have security_sb_set_mnt_opts()
> or security_sb_clone_mnt_opts() set this value automatically?  A quick
> "git-grep" for security_sb_set_mnt_opts() shows that it's also called
> by btrfs at some point, so having this done automatically feels less
> fragile to me than requiring individual filesystems to set it
> manually.

Hmmm... I wonder if cifs and afs should be calling
security_sb_clone_mnt_opts() also.

David