Anna Schumaker [off-list ref] wrote:

quoted

+       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