From f7232154198f928fc25f420d6190468212a7632a Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Fri, 23 May 2008 13:04:21 -0700 Subject: [PATCH] mm: don't drop a partial page in a zone's memory map size In a zone's present pages number, account for all pages occupied by the memory map, including a partial. Signed-off-by: Johannes Weiner Cc: KAMEZAWA Hiroyuki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) 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 -- 2.20.1