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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 63835579323..035300299f9 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3378,7 +3378,8 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat,
* is used by this zone for memmap. This affects the watermark
* and per-cpu initialisations
*/
- memmap_pages = (size * sizeof(struct page)) >> PAGE_SHIFT;
+ memmap_pages =
+ PAGE_ALIGN(size * sizeof(struct page)) >> PAGE_SHIFT;
if (realsize >= memmap_pages) {
realsize -= memmap_pages;
printk(KERN_DEBUG