ALSA: usb-audio: add support for Akai MPD16

[safe/jmp/linux-2.6] / mm / mmu_notifier.c

diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c
index 5f4ef02..438951d 100644 (file)
--- a/mm/mmu_notifier.c
+++ b/mm/mmu_notifier.c
@@ -16,6 +16,7 @@
 #include <linux/err.h>
 #include <linux/rcupdate.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 
 /*
  * This function can't run concurrently against mmu_notifier_register
@@ -99,6 +100,26 @@ int __mmu_notifier_clear_flush_young(struct mm_struct *mm,
        return young;
 }
 
+void __mmu_notifier_change_pte(struct mm_struct *mm, unsigned long address,
+                              pte_t pte)
+{
+       struct mmu_notifier *mn;
+       struct hlist_node *n;
+
+       rcu_read_lock();
+       hlist_for_each_entry_rcu(mn, n, &mm->mmu_notifier_mm->list, hlist) {
+               if (mn->ops->change_pte)
+                       mn->ops->change_pte(mn, mm, address, pte);
+               /*
+                * Some drivers don't have change_pte,
+                * so we must call invalidate_page in that case.
+                */
+               else if (mn->ops->invalidate_page)
+                       mn->ops->invalidate_page(mn, mm, address);
+       }
+       rcu_read_unlock();
+}
+
 void __mmu_notifier_invalidate_page(struct mm_struct *mm,
                                          unsigned long address)
 {