[PATCH 4.9 0/1] selinux: drop super_block backpointer from superblock_security_struct

This backports a commit from upstream which I would consider a cleanup as well as a (minor) performance fix due to less memory being used and avoiding an unneccessary pointer dereferencing, i.e. the change from `sbsec->sb->s_root` to `sb->s_root`.

However as it changes the `superblock_security_struct` please check if this violates any API/ABI stability requirements which I'm not aware of.

Ondrej Mosnacek (1): selinux: drop super_block backpointer from superblock_security_struct

security/selinux/hooks.c | 5 ++--- security/selinux/include/objsec.h | 1 - 2 files changed, 2 insertions(+), 4 deletions(-)