slab: correct pfmemalloc check

[firefly-linux-kernel-4.4.55.git] / mm / vmalloc.c

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index a649186669a3d5ad71d30915807c27421d231058..13a54953a273a715f1f4466ff5eeb1ba119f179c 100644 (file)
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -388,12 +388,12 @@ nocache:
                addr = ALIGN(first->va_end, align);
                if (addr < vstart)
                        goto nocache;
-               if (addr + size - 1 < addr)
+               if (addr + size < addr)
                        goto overflow;
 
        } else {
                addr = ALIGN(vstart, align);
-               if (addr + size - 1 < addr)
+               if (addr + size < addr)
                        goto overflow;
 
                n = vmap_area_root.rb_node;
@@ -420,7 +420,7 @@ nocache:
                if (addr + cached_hole_size < first->va_start)
                        cached_hole_size = first->va_start - addr;
                addr = ALIGN(first->va_end, align);
-               if (addr + size - 1 < addr)
+               if (addr + size < addr)
                        goto overflow;
 
                if (list_is_last(&first->list, &vmap_area_list))