huge_pte_lockptr
assert_spin_locked(huge_pte_lockptr(h, vma->vm_mm, ptep));
ptl = huge_pte_lockptr(h, mm, pte);
src_ptl = huge_pte_lockptr(h, src, src_pte);
src_ptl = huge_pte_lockptr(h, src, src_pte);
src_ptl = huge_pte_lockptr(h, mm, src_pte);
spinlock_t *ptl = huge_pte_lockptr(hstate_vma(vma), vma->vm_mm, ptep);