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-rw-r--r--mm/nobootmem.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index bd82f6b31411..b8294fc03df8 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_node - release a node's free pages to the buddy allocator
* @pgdat: node to be released
@@ -146,6 +162,7 @@ unsigned long __init free_low_memory_core_early(int nodeid)
unsigned long __init free_all_bootmem_node(pg_data_t *pgdat)
{
register_page_bootmem_info_node(pgdat);
+ reset_node_lowmem_managed_pages(pgdat);
/* free_low_memory_core_early(MAX_NUMNODES) will be called later */
return 0;
@@ -158,6 +175,11 @@ unsigned long __init free_all_bootmem_node(pg_data_t *pgdat)
*/
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