Inaccessible VMA should not be trapping NUMA hint faults. Skip them. Signed-off-by: Mel Gorman <mgorman@xxxxxxx> --- kernel/sched/fair.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 7c70201..40d8ea3 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -970,6 +970,13 @@ void task_numa_work(struct callback_head *work) if (!vma_migratable(vma)) continue; + /* + * Skip inaccessible VMAs to avoid any confusion between + * PROT_NONE and NUMA hinting ptes + */ + if (!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE))) + continue; + /* Skip small VMAs. They are not likely to be of relevance */ if (vma->vm_end - vma->vm_start < HPAGE_SIZE) continue; -- 1.8.4 -- 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>