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-rw-r--r--mm/Kconfig8
-rw-r--r--mm/page_alloc.c6
2 files changed, 11 insertions, 3 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 69caa9d8674e..15c131393639 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -23,3 +23,11 @@ config DISCONTIGMEM
endchoice
+#
+# Both the NUMA code and DISCONTIGMEM use arrays of pg_data_t's
+# to represent different areas of memory. This variable allows
+# those dependencies to exist individually.
+#
+config NEED_MULTIPLE_NODES
+ def_bool y
+ depends on DISCONTIGMEM || NUMA
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 1958358e29b0..20e239599db0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1972,18 +1972,18 @@ void __init free_area_init_node(int nid, struct pglist_data *pgdat,
free_area_init_core(pgdat, zones_size, zholes_size);
}
-#ifndef CONFIG_DISCONTIGMEM
+#ifndef CONFIG_NEED_MULTIPLE_NODES
static bootmem_data_t contig_bootmem_data;
struct pglist_data contig_page_data = { .bdata = &contig_bootmem_data };
EXPORT_SYMBOL(contig_page_data);
+#endif
void __init free_area_init(unsigned long *zones_size)
{
- free_area_init_node(0, &contig_page_data, zones_size,
+ free_area_init_node(0, NODE_DATA(0), zones_size,
__pa(PAGE_OFFSET) >> PAGE_SHIFT, NULL);
}
-#endif
#ifdef CONFIG_PROC_FS