Andrea Arcangeli <aarcange@xxxxxxxxxx> writes: > Hi Aneesh, > > On Mon, May 13, 2013 at 08:36:38PM +0530, Aneesh Kumar K.V wrote: >> https://lists.ozlabs.org/pipermail/linuxppc-dev/2013-May/106406.html > > You need ACCESS_ONCE() in all "pgd = ACCESS_ONCE(*pgdp)", "pud = > ACCESS_ONCE(*pudp)" otherwise the compiler could decide your change is > a noop. Will do. I guess we have similar one for x86 here http://article.gmane.org/gmane.linux.kernel/1483617 May be ppc64 gup walk also need similar changes ? > > I think you could remove the #ifdef CONFIG_TRANSPARENT_HUGEPAGE too. That was becaue i had pte_pmd available only with that config. I will see if we can fix that. -aneesh -- 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>