On 3/24/20 4:55 AM, Jason Gunthorpe wrote: > Also, since CH moved all the get_user_pages_fast code out of the > arch's many/all archs can drop their arch specific version of this > routine. This is really just a specialized version of gup_fast's > algorithm.. > > (also the arch versions seem different, why do some return actual > ptes, not null?) Not sure I understand that last question. The return value should be a *pte or null. /* * huge_pte_offset() - Walk the page table to resolve the hugepage * entry at address @addr * * Return: Pointer to page table or swap entry (PUD or PMD) for * address @addr, or NULL if a p*d_none() entry is encountered and the * size @sz doesn't match the hugepage size at this level of the page * table. */ -- Mike Kravetz
