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-rw-r--r--mm/page_alloc.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 6e8ecb6e021c..41253539b32a 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -176,6 +176,7 @@ static char * const zone_names[MAX_NR_ZONES] = {
};
int min_free_kbytes = 1024;
+int min_free_order_shift = 1;
static unsigned long __meminitdata nr_kernel_pages;
static unsigned long __meminitdata nr_all_pages;
@@ -1469,7 +1470,7 @@ static bool __zone_watermark_ok(struct zone *z, int order, unsigned long mark,
free_pages -= z->free_area[o].nr_free << o;
/* Require fewer higher order pages to be free */
- min >>= 1;
+ min >>= min_free_order_shift;
if (free_pages <= min)
return false;