1 files changed, 4 insertions, 2 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 378a15bcd649..c3edb624fccf 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1628,6 +1628,7 @@ static bool __zone_watermark_ok(struct zone *z, int order, unsigned long mark,
         long min = mark;
         long lowmem_reserve = z->lowmem_reserve[classzone_idx];
         int o;
+        long free_cma = 0;
 
         free_pages -= (1 << order) - 1;
         if (alloc_flags & ALLOC_HIGH)
@@ -1637,9 +1638,10 @@ static bool __zone_watermark_ok(struct zone *z, int order, unsigned long mark,
 #ifdef CONFIG_CMA
         /* If allocation can't use CMA areas don't use free CMA pages */
         if (!(alloc_flags & ALLOC_CMA))
-                free_pages -= zone_page_state(z, NR_FREE_CMA_PAGES);
+                free_cma = zone_page_state(z, NR_FREE_CMA_PAGES);
 #endif
-        if (free_pages <= min + lowmem_reserve)
+
+        if (free_pages - free_cma <= min + lowmem_reserve)
                 return false;
         for (o = 0; o < order; o++) {
                 /* At the next order, this order's pages become unavailable */