2.6.9-mm1-U10.3 : compile error fix with CONFIG_HOTPLUG_CPU enable

[Remi Colinet <remi.colinet@free.fr>]

Hi

With CONFIG_HOTPLUG_CPU and CONFIG_SMP enable, this patch fixes the 
following compile error.

--- mm/swap.c.orig      2004-10-22 22:31:58.000000000 +0200
+++ mm/swap.c   2004-10-22 23:10:44.202728352 +0200
@@ -423,12 +423,12 @@
 #ifdef CONFIG_HOTPLUG_CPU
 static void lru_drain_cache(unsigned int cpu)
 {
-       struct pagevec *pvec = &per_cpu(lru_add_pvecs, cpu);
+       struct pagevec *pvec = &per_cpu_var_locked(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);
+       pvec = &per_cpu_var_locked(lru_add_active_pvecs, cpu);
        if (pagevec_count(pvec))
                __pagevec_lru_add_active(pvec);
 }


  CC      mm/page_alloc.o
  CC      mm/page-writeback.o
  CC      mm/pdflush.o
  CC      mm/prio_tree.o
  CC      mm/readahead.o
  CC      mm/slab.o
  CC      mm/swap.o
mm/swap.c: In function `lru_drain_cache':
mm/swap.c:426: `per_cpu__lru_add_pvecs' undeclared (first use in this 
function)
mm/swap.c:426: (Each undeclared identifier is reported only once
mm/swap.c:426: for each function it appears in.)
mm/swap.c:426: warning: type defaults to `int' in declaration of `type name'
mm/swap.c:426: invalid type argument of `unary *'
mm/swap.c:431: `per_cpu__lru_add_active_pvecs' undeclared (first use in 
this function)
mm/swap.c:431: warning: type defaults to `int' in declaration of `type name'
mm/swap.c:431: invalid type argument of `unary *'
make[1]: *** [mm/swap.o] Error 1
make: *** [mm] Error 2

Remi