Hi Andrea When copying user highpage, the PAGE_SHIFT in the third parameter is a typo, I think, and is replaced with PAGE_SIZE. When configuring transparent hugepage, it depends on x86 and MMU. Would you please tippoint why other archs with MMU, say MIPS, are masked out? Thanks Signed-off-by: Hillf Danton <dhillf@xxxxxxxxx> --- --- a/mm/huge_memory.c Sat Aug 13 11:45:14 2011 +++ b/mm/huge_memory.c Wed Oct 12 22:26:15 2011 @@ -829,7 +829,7 @@ static int do_huge_pmd_wp_page_fallback( for (i = 0; i < HPAGE_PMD_NR; i++) { copy_user_highpage(pages[i], page + i, - haddr + PAGE_SHIFT*i, vma); + haddr + PAGE_SIZE * i, vma); __SetPageUptodate(pages[i]); cond_resched(); } -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>