[PARISC] Return PDC_OK when alloc_pa_dev fails to enumerate all devices

[powerpc.git] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 3c5cf66..bd4de59 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -60,8 +60,11 @@ long nr_swap_pages;
  *     NORMAL allocation will leave 784M/256 of ram reserved in the ZONE_DMA
  *     HIGHMEM allocation will leave 224M/32 of ram reserved in ZONE_NORMAL
  *     HIGHMEM allocation will (224M+784M)/256 of ram reserved in ZONE_DMA
+ *
+ * TBD: should special case ZONE_DMA32 machines here - in those we normally
+ * don't need any ZONE_NORMAL reservation
  */
-int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = { 256, 32 };
+int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = { 256, 256, 32 };
 
 EXPORT_SYMBOL(totalram_pages);
 
@@ -72,7 +75,7 @@ EXPORT_SYMBOL(totalram_pages);
 struct zone *zone_table[1 << ZONETABLE_SHIFT] __read_mostly;
 EXPORT_SYMBOL(zone_table);
 
-static char *zone_names[MAX_NR_ZONES] = { "DMA", "Normal", "HighMem" };
+static char *zone_names[MAX_NR_ZONES] = { "DMA", "DMA32", "Normal", "HighMem" };
 int min_free_kbytes = 1024;
 
 unsigned long __initdata nr_kernel_pages;
@@ -124,7 +127,7 @@ static void bad_page(const char *function, struct page *page)
        printk(KERN_EMERG "Bad page state at %s (in process '%s', page %p)\n",
                function, current->comm, page);
        printk(KERN_EMERG "flags:0x%0*lx mapping:%p mapcount:%d count:%d\n",
-               (int)(2*sizeof(page_flags_t)), (unsigned long)page->flags,
+               (int)(2*sizeof(unsigned long)), (unsigned long)page->flags,
                page->mapping, page_mapcount(page), page_count(page));
        printk(KERN_EMERG "Backtrace:\n");
        dump_stack();
@@ -842,21 +845,22 @@ __alloc_pages(gfp_t gfp_mask, unsigned int order,
 
        might_sleep_if(wait);
 
+restart:
        z = zonelist->zones;  /* the list of zones suitable for gfp_mask */
 
        if (unlikely(*z == NULL)) {
                /* Should this ever happen?? */
                return NULL;
        }
-restart:
+
        page = get_page_from_freelist(gfp_mask|__GFP_HARDWALL, order,
                                zonelist, ALLOC_CPUSET);
        if (page)
                goto got_pg;
 
-       do
+       do {
                wakeup_kswapd(*z, order);
-       while (*(++z));
+       } while (*(++z));
 
        /*
         * OK, we're below the kswapd watermark and have kicked background
@@ -1421,6 +1425,10 @@ static int __init build_zonelists_node(pg_data_t *pgdat, struct zonelist *zoneli
                zone = pgdat->node_zones + ZONE_NORMAL;
                if (zone->present_pages)
                        zonelist->zones[j++] = zone;
+       case ZONE_DMA32:
+               zone = pgdat->node_zones + ZONE_DMA32;
+               if (zone->present_pages)
+                       zonelist->zones[j++] = zone;
        case ZONE_DMA:
                zone = pgdat->node_zones + ZONE_DMA;
                if (zone->present_pages)
@@ -1435,6 +1443,8 @@ static inline int highest_zone(int zone_bits)
        int res = ZONE_NORMAL;
        if (zone_bits & (__force int)__GFP_HIGHMEM)
                res = ZONE_HIGHMEM;
+       if (zone_bits & (__force int)__GFP_DMA32)
+               res = ZONE_DMA32;
        if (zone_bits & (__force int)__GFP_DMA)
                res = ZONE_DMA;
        return res;
@@ -1846,11 +1856,10 @@ static int __devinit pageset_cpuup_callback(struct notifier_block *nfb,
                        if (process_zones(cpu))
                                ret = NOTIFY_BAD;
                        break;
-#ifdef CONFIG_HOTPLUG_CPU
+               case CPU_UP_CANCELED:
                case CPU_DEAD:
                        free_zone_pagesets(cpu);
                        break;
-#endif
                default:
                        break;
        }
@@ -1955,7 +1964,7 @@ static void __init free_area_init_core(struct pglist_data *pgdat,
                if (zholes_size)
                        realsize -= zholes_size[j];
 
-               if (j == ZONE_DMA || j == ZONE_NORMAL)
+               if (j < ZONE_HIGHMEM)
                        nr_kernel_pages += realsize;
                nr_all_pages += realsize;