From 3000f2e2fc855664c28d3e6a47e0373737974eb4 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Tue, 8 Mar 2022 05:02:21 -0500 Subject: mm: use vmalloc_array and vcalloc for array allocations Instead of using array_size or just a multiply, use a function that takes care of both the multiplication and the overflow checks. Acked-by: Michal Hocko Signed-off-by: Paolo Bonzini --- mm/swap_cgroup.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'mm/swap_cgroup.c') diff --git a/mm/swap_cgroup.c b/mm/swap_cgroup.c index 7f34343c075a..5a9442979a18 100644 --- a/mm/swap_cgroup.c +++ b/mm/swap_cgroup.c @@ -167,14 +167,12 @@ unsigned short lookup_swap_cgroup_id(swp_entry_t ent) int swap_cgroup_swapon(int type, unsigned long max_pages) { void *array; - unsigned long array_size; unsigned long length; struct swap_cgroup_ctrl *ctrl; length = DIV_ROUND_UP(max_pages, SC_PER_PAGE); - array_size = length * sizeof(void *); - array = vzalloc(array_size); + array = vcalloc(length, sizeof(void *)); if (!array) goto nomem; -- cgit v1.2.3