These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / mm / mmu_notifier.c

diff --git a/kernel/mm/mmu_notifier.c b/kernel/mm/mmu_notifier.c
index 3b9b3d0..5fbdd36 100644 (file)
--- a/kernel/mm/mmu_notifier.c
+++ b/kernel/mm/mmu_notifier.c
@@ -123,6 +123,23 @@ int __mmu_notifier_clear_flush_young(struct mm_struct *mm,
        return young;
 }
 
+int __mmu_notifier_clear_young(struct mm_struct *mm,
+                              unsigned long start,
+                              unsigned long end)
+{
+       struct mmu_notifier *mn;
+       int young = 0, id;
+
+       id = srcu_read_lock(&srcu);
+       hlist_for_each_entry_rcu(mn, &mm->mmu_notifier_mm->list, hlist) {
+               if (mn->ops->clear_young)
+                       young |= mn->ops->clear_young(mn, mm, start, end);
+       }
+       srcu_read_unlock(&srcu, id);
+
+       return young;
+}
+
 int __mmu_notifier_test_young(struct mm_struct *mm,
                              unsigned long address)
 {