MIPS: Fix mdelay(1) for 64bit kernel with HZ == 1000

[linux-2.6-omap-h63xx.git] / mm / swap.c

diff --git a/mm/swap.c b/mm/swap.c
index 96387e20184ab85971794daeb524ed07de6f8e18..ee6d71ccfa56fe77173bc7806797b5fc01ec1112 100644 (file)
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -34,8 +34,6 @@
 /* How many pages do we try to swap or page in/out together? */
 int page_cluster;
 
-#ifdef CONFIG_HUGETLB_PAGE
-
 void put_page(struct page *page)
 {
        if (unlikely(PageCompound(page))) {
@@ -52,7 +50,6 @@ void put_page(struct page *page)
                __page_cache_release(page);
 }
 EXPORT_SYMBOL(put_page);
-#endif
 
 /*
  * Writeback is about to end against a page which has been marked for immediate
@@ -159,16 +156,22 @@ void fastcall lru_cache_add_active(struct page *page)
        put_cpu_var(lru_add_active_pvecs);
 }
 
-void lru_add_drain(void)
+static void __lru_add_drain(int cpu)
 {
-       struct pagevec *pvec = &get_cpu_var(lru_add_pvecs);
+       struct pagevec *pvec = &per_cpu(lru_add_pvecs, cpu);
 
+       /* CPU is dead, so no locking needed. */
        if (pagevec_count(pvec))
                __pagevec_lru_add(pvec);
-       pvec = &__get_cpu_var(lru_add_active_pvecs);
+       pvec = &per_cpu(lru_add_active_pvecs, cpu);
        if (pagevec_count(pvec))
                __pagevec_lru_add_active(pvec);
-       put_cpu_var(lru_add_pvecs);
+}
+
+void lru_add_drain(void)
+{
+       __lru_add_drain(get_cpu());
+       put_cpu();
 }
 
 /*
@@ -259,6 +262,8 @@ void __pagevec_release(struct pagevec *pvec)
        pagevec_reinit(pvec);
 }
 
+EXPORT_SYMBOL(__pagevec_release);
+
 /*
  * pagevec_release() for pages which are known to not be on the LRU
  *
@@ -387,6 +392,7 @@ unsigned pagevec_lookup_tag(struct pagevec *pvec, struct address_space *mapping,
        return pagevec_count(pvec);
 }
 
+EXPORT_SYMBOL(pagevec_lookup_tag);
 
 #ifdef CONFIG_SMP
 /*
@@ -410,20 +416,8 @@ void vm_acct_memory(long pages)
        }
        preempt_enable();
 }
-EXPORT_SYMBOL(vm_acct_memory);
 
 #ifdef CONFIG_HOTPLUG_CPU
-static void lru_drain_cache(unsigned int cpu)
-{
-       struct pagevec *pvec = &per_cpu(lru_add_pvecs, cpu);
-
-       /* CPU is dead, so no locking needed. */
-       if (pagevec_count(pvec))
-               __pagevec_lru_add(pvec);
-       pvec = &per_cpu(lru_add_active_pvecs, cpu);
-       if (pagevec_count(pvec))
-               __pagevec_lru_add_active(pvec);
-}
 
 /* Drop the CPU's cached committed space back into the central pool. */
 static int cpu_swap_callback(struct notifier_block *nfb,
@@ -436,7 +430,7 @@ static int cpu_swap_callback(struct notifier_block *nfb,
        if (action == CPU_DEAD) {
                atomic_add(*committed, &vm_committed_space);
                *committed = 0;
-               lru_drain_cache((long)hcpu);
+               __lru_add_drain((long)hcpu);
        }
        return NOTIFY_OK;
 }