sh: Fix up max_zone_pfns[] with multiple nodes.

Currently using multiple nodes tramples the ZONE_NORMAL
max low pfn, tidy up the logic a bit to get it all working
as expected.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 1589466..2032b39 100644 (file)
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -142,6 +142,7 @@ extern char __init_begin, __init_end;
  */
 void __init paging_init(void)
 {
+       unsigned long max_zone_pfns[MAX_NR_ZONES];
        int nid;
 
        /* We don't need to map the kernel through the TLB, as
@@ -153,23 +154,23 @@ void __init paging_init(void)
         * check for a null value. */
        set_TTB(swapper_pg_dir);
 
+       memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
+
        for_each_online_node(nid) {
                pg_data_t *pgdat = NODE_DATA(nid);
-               unsigned long max_zone_pfns[MAX_NR_ZONES];
                unsigned long low, start_pfn;
 
-               memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
-
                start_pfn = pgdat->bdata->node_boot_start >> PAGE_SHIFT;
                low = pgdat->bdata->node_low_pfn;
 
-               max_zone_pfns[ZONE_NORMAL] = low;
+               if (max_zone_pfns[ZONE_NORMAL] < low)
+                       max_zone_pfns[ZONE_NORMAL] = low;
 
                printk("Node %u: start_pfn = 0x%lx, low = 0x%lx\n",
                       nid, start_pfn, low);
-
-               free_area_init_nodes(max_zone_pfns);
        }
+
+       free_area_init_nodes(max_zone_pfns);
 }
 
 static struct kcore_list kcore_mem, kcore_vmalloc;
@@ -179,6 +180,9 @@ void __init mem_init(void)
        int codesize, datasize, initsize;
        int nid;
 
+       num_physpages = 0;
+       high_memory = NULL;
+
        for_each_online_node(nid) {
                pg_data_t *pgdat = NODE_DATA(nid);
                unsigned long node_pages = 0;
@@ -191,9 +195,9 @@ void __init mem_init(void)
 
                totalram_pages += node_pages;
 
-               node_high_memory = (void *)((pgdat->node_start_pfn +
-                                            pgdat->node_spanned_pages) <<
-                                               PAGE_SHIFT);
+               node_high_memory = (void *)__va((pgdat->node_start_pfn +
+                                                pgdat->node_spanned_pages) <<
+                                                PAGE_SHIFT);
                if (node_high_memory > high_memory)
                        high_memory = node_high_memory;
        }
@@ -225,7 +229,7 @@ void __init mem_init(void)
        printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, "
               "%dk data, %dk init)\n",
                (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
-               totalram_pages << (PAGE_SHIFT-10),
+               num_physpages << (PAGE_SHIFT-10),
                codesize >> 10,
                datasize >> 10,
                initsize >> 10);
@@ -247,7 +251,8 @@ void free_initmem(void)
                free_page(addr);
                totalram_pages++;
        }
-       printk ("Freeing unused kernel memory: %dk freed\n", (&__init_end - &__init_begin) >> 10);
+       printk("Freeing unused kernel memory: %dk freed\n",
+              (&__init_end - &__init_begin) >> 10);
 }
 
 #ifdef CONFIG_BLK_DEV_INITRD
@@ -260,6 +265,6 @@ void free_initrd_mem(unsigned long start, unsigned long end)
                free_page(p);
                totalram_pages++;
        }
-       printk ("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
+       printk("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
 }
 #endif