On Fri 22-03-13 16:23:50, Naoya Horiguchi wrote: [...] > @@ -523,6 +544,11 @@ static inline int check_pmd_range(struct vm_area_struct *vma, pud_t *pud, > pmd = pmd_offset(pud, addr); > do { > next = pmd_addr_end(addr, end); > + if (pmd_huge(*pmd) && is_vm_hugetlb_page(vma)) { > + check_hugetlb_pmd_range(vma, pmd, nodes, > + flags, private); I am afraid this has the same issue with other huge page sizes I have mentioned earlier. > + continue; > + } > split_huge_page_pmd(vma, addr, pmd); > if (pmd_none_or_trans_huge_or_clear_bad(pmd)) > continue; [...] > @@ -1012,14 +1040,8 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest, > check_range(mm, mm->mmap->vm_start, mm->task_size, &nmask, > flags | MPOL_MF_DISCONTIG_OK, &pagelist); > > - if (!list_empty(&pagelist)) { > - err = migrate_pages(&pagelist, new_node_page, dest, > + return migrate_movable_pages(&pagelist, new_node_page, dest, > MIGRATE_SYNC, MR_SYSCALL); > - if (err) > - putback_lru_pages(&pagelist); > - } > - > - return err; This is really confusing. Why migrate_pages doesn't do putback cleanup on its own but migrate_movable_pages does? Please also move migrate_movable_pages definition to this patch. > } > > /* > -- > 1.7.11.7 > -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>