diff --git a/drivers/hyperhold/hp_device.c b/drivers/hyperhold/hp_device.c
index 5b818265c26dbba7a0996fc36288489186748faf..47c5dd390477a24e48aecff25e22e3ca897969d1 100644
--- a/drivers/hyperhold/hp_device.c
+++ b/drivers/hyperhold/hp_device.c
@@ -120,6 +120,8 @@ int soft_crypt_page(struct crypto_skcipher *ctfm, struct page *dst_page,
 	else
 		BUG();
 
+	skcipher_request_free(req);
+
 	if (ret)
 		pr_err("%scrypt failed!\n", op == HP_DEV_ENCRYPT ? "en" : "de");
 
diff --git a/mm/zswapd.c b/mm/zswapd.c
index 65d0c102c808900702d0fc0d76c34a4bb373b798..0060849459611b3b319dadfbaa6cfc05f963e796 100644
--- a/mm/zswapd.c
+++ b/mm/zswapd.c
@@ -87,8 +87,8 @@ u64 swapin_memcg(struct mem_cgroup *memcg, u64 req_size)
 	u64 ratio = atomic64_read(&memcg->memcg_reclaimed.ub_ufs2zram_ratio);
 	struct group_swap_device *gsdev = NULL;
 
-	if (req_size > swap_size * ratio / ESWAP_PERCENT_CONSTANT)
-		req_size = swap_size * ratio / ESWAP_PERCENT_CONSTANT;
+	if (req_size > div_u64(swap_size * ratio, ESWAP_PERCENT_CONSTANT))
+		req_size = div_u64(swap_size * ratio, ESWAP_PERCENT_CONSTANT);
 	down_read(&gs_lock);
 	list_for_each_entry(gsdev, &gs_list, list) {
 		read_size += gsdev->ops->group_read(memcg->id.id, req_size - read_size,
@@ -112,8 +112,8 @@ static u64 swapout_memcg(struct mem_cgroup *memcg, u64 req_size)
 
 	if (all_size * ratio / ESWAP_PERCENT_CONSTANT <= swap_size)
 		return 0;
-	if (req_size > all_size * ratio / ESWAP_PERCENT_CONSTANT - swap_size)
-		req_size = all_size * ratio / ESWAP_PERCENT_CONSTANT - swap_size;
+	if (req_size > div_u64(all_size * ratio, ESWAP_PERCENT_CONSTANT) - swap_size)
+		req_size = div_u64(all_size * ratio, ESWAP_PERCENT_CONSTANT) - swap_size;
 	down_read(&gs_lock);
 	list_for_each_entry(gsdev, &gs_list, list) {
 		write_size += gsdev->ops->group_write(memcg->id.id, req_size - write_size,