MNT_UNBINDABLE 140 fs/pnode.c mnt->mnt_flags |= MNT_UNBINDABLE; MNT_UNBINDABLE 142 fs/pnode.c mnt->mnt_flags &= ~MNT_UNBINDABLE; MNT_UNBINDABLE 18 fs/pnode.h #define IS_MNT_UNBINDABLE(mnt) (mnt->mnt_flags & MNT_UNBINDABLE)