Revert "mm, memory_hotplug: initialize struct pages for the full memory section"

[thirdparty/kernel/stable.git] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e95b5b7c9c3d637efe29d07d86c75975acbfc500..995d1079f958d16a9d17bdf0fc50708aa1818a5d 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5542,18 +5542,6 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
                        cond_resched();
                }
        }
-#ifdef CONFIG_SPARSEMEM
-       /*
-        * If the zone does not span the rest of the section then
-        * we should at least initialize those pages. Otherwise we
-        * could blow up on a poisoned page in some paths which depend
-        * on full sections being initialized (e.g. memory hotplug).
-        */
-       while (end_pfn % PAGES_PER_SECTION) {
-               __init_single_page(pfn_to_page(end_pfn), end_pfn, zone, nid);
-               end_pfn++;
-       }
-#endif
 }
 
 #ifdef CONFIG_ZONE_DEVICE