It allocated one more page than necessary if @max_pages was a multiple of SC_PER_PAGE. Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxx> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> --- mm/page_cgroup.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c index 2d1a0fa01d7b..29951abc852e 100644 --- a/mm/page_cgroup.c +++ b/mm/page_cgroup.c @@ -446,7 +446,7 @@ int swap_cgroup_swapon(int type, unsigned long max_pages) if (!do_swap_account) return 0; - length = ((max_pages/SC_PER_PAGE) + 1); + length = DIV_ROUND_UP(max_pages, SC_PER_PAGE); array_size = length * sizeof(void *); array = vmalloc(array_size); -- 1.7.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>