X-Git-Url: https://git.stricted.de/?p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git;a=blobdiff_plain;f=mm%2Fnobootmem.c;fp=mm%2Fnobootmem.c;h=03d152a76acf5e18396b74e62a3372e55b469750;hp=ecc2f13d557d3b28f5bb82b3d5dca2e621cfcf9c;hb=de65d816aa44f9ddd79861ae21d75010cc1fd003;hpb=9710f581bb4c35589ac046b0cfc0deb7f369fc85

diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index ecc2f13d557d..03d152a76acf 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -137,6 +137,22 @@ unsigned long __init free_low_memory_core_early(int nodeid)
 	return count;
 }
 
+static void reset_node_lowmem_managed_pages(pg_data_t *pgdat)
+{
+	struct zone *z;
+
+	/*
+	 * In free_area_init_core(), highmem zone's managed_pages is set to
+	 * present_pages, and bootmem allocator doesn't allocate from highmem
+	 * zones. So there's no need to recalculate managed_pages because all
+	 * highmem pages will be managed by the buddy system. Here highmem
+	 * zone also includes highmem movable zone.
+	 */
+	for (z = pgdat->node_zones; z < pgdat->node_zones + MAX_NR_ZONES; z++)
+		if (!is_highmem(z))
+			z->managed_pages = 0;
+}
+
 /**
  * free_all_bootmem - release free pages to the buddy allocator
  *
@@ -144,6 +160,11 @@ unsigned long __init free_low_memory_core_early(int nodeid)
  */
 unsigned long __init free_all_bootmem(void)
 {
+	struct pglist_data *pgdat;
+
+	for_each_online_pgdat(pgdat)
+		reset_node_lowmem_managed_pages(pgdat);
+
 	/*
 	 * We need to use MAX_NUMNODES instead of NODE_DATA(0)->node_id
 	 *  because in some case like Node0 doesn't have RAM installed