pmdp_invalidate
extern pmd_t pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
extern pmd_t pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
old = pmdp_invalidate(vma, addr, pmdp);
extern pmd_t pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
pmdp_invalidate(vma, addr, pmd);
old_pmd = pmdp_invalidate(vma, haddr, pmd);
pmdval = pmdp_invalidate(vma, address, pvmw->pmd);
pmdp_invalidate(vma, addr, pmd);
pmdp_invalidate(vma, addr, pmdp);
return pmdp_invalidate(vma, address, pmdp);
entry = pmdp_invalidate(vma, address, pmd);