Linux 2.6.21-rc4

[powerpc.git] / mm / bootmem.c

diff --git a/mm/bootmem.c b/mm/bootmem.c
index f0f85fa..00a9697 100644 (file)
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -15,6 +15,7 @@
 
 #include <asm/bug.h>
 #include <asm/io.h>
+#include <asm/processor.h>
 
 #include "internal.h"
 
@@ -26,8 +27,6 @@ unsigned long max_low_pfn;
 unsigned long min_low_pfn;
 unsigned long max_pfn;
 
-EXPORT_UNUSED_SYMBOL(max_pfn);  /*  June 2006  */
-
 static LIST_HEAD(bdata_list);
 #ifdef CONFIG_CRASH_DUMP
 /*
@@ -195,6 +194,10 @@ __alloc_bootmem_core(struct bootmem_data *bdata, unsigned long size,
        if (limit && bdata->node_boot_start >= limit)
                return NULL;
 
+       /* on nodes without memory - bootmem_map is NULL */
+       if (!bdata->node_bootmem_map)
+               return NULL;
+
        end_pfn = bdata->node_low_pfn;
        limit = PFN_DOWN(limit);
        if (limit && end_pfn > limit)
@@ -453,7 +456,9 @@ void * __init __alloc_bootmem_node(pg_data_t *pgdat, unsigned long size,
        return __alloc_bootmem(size, align, goal);
 }
 
-#define LOW32LIMIT 0xffffffff
+#ifndef ARCH_LOW_ADDRESS_LIMIT
+#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
+#endif
 
 void * __init __alloc_bootmem_low(unsigned long size, unsigned long align,
                                  unsigned long goal)
@@ -462,7 +467,8 @@ void * __init __alloc_bootmem_low(unsigned long size, unsigned long align,
        void *ptr;
 
        list_for_each_entry(bdata, &bdata_list, list) {
-               ptr = __alloc_bootmem_core(bdata, size, align, goal, LOW32LIMIT);
+               ptr = __alloc_bootmem_core(bdata, size, align, goal,
+                                               ARCH_LOW_ADDRESS_LIMIT);
                if (ptr)
                        return ptr;
        }
@@ -478,5 +484,6 @@ void * __init __alloc_bootmem_low(unsigned long size, unsigned long align,
 void * __init __alloc_bootmem_low_node(pg_data_t *pgdat, unsigned long size,
                                       unsigned long align, unsigned long goal)
 {
-       return __alloc_bootmem_core(pgdat->bdata, size, align, goal, LOW32LIMIT);
+       return __alloc_bootmem_core(pgdat->bdata, size, align, goal,
+                                   ARCH_LOW_ADDRESS_LIMIT);
 }