From: Aneesh Kumar K.V Date: Thu, 5 Dec 2013 18:38:22 +0000 (+0530) Subject: mm: Move change_prot_numa outside CONFIG_ARCH_USES_NUMA_PROT_NONE X-Git-Tag: v3.14-rc1~80^2~42 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5877231f646bbd6d1d545e7af83aaa6e6b746013;p=pandora-kernel.git mm: Move change_prot_numa outside CONFIG_ARCH_USES_NUMA_PROT_NONE change_prot_numa should work even if _PAGE_NUMA != _PAGE_PROTNONE. On archs like ppc64 that don't use _PAGE_PROTNONE and also have a separate page table outside linux pagetable, we just need to make sure that when calling change_prot_numa we flush the hardware page table entry so that next page access result in a numa fault. We still need to make sure we use the numa faulting logic only when CONFIG_NUMA_BALANCING is set. This implies the migrate-on-fault (Lazy migration) via mbind will only work if CONFIG_NUMA_BALANCING is set. Signed-off-by: Aneesh Kumar K.V Reviewed-by: Rik van Riel Acked-by: Mel Gorman Signed-off-by: Benjamin Herrenschmidt --- Reading git-diff-tree failed