[PATCH v3 4/9] vhost: vringh: use krealloc_array()

[Bartosz Golaszewski]

From: Bartosz Golaszewski <bgolaszewski at baylibre.com>

Use the helper that checks for overflows internally instead of manually
calculating the size of the new array.

Signed-off-by: Bartosz Golaszewski <bgolaszewski at baylibre.com>
Acked-by: Michael S. Tsirkin <mst at redhat.com>
---
 drivers/vhost/vringh.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c
index 8bd8b403f087..08a0e1c842df 100644
--- a/drivers/vhost/vringh.c
+++ b/drivers/vhost/vringh.c
@@ -198,7 +198,8 @@ static int resize_iovec(struct vringh_kiov *iov, gfp_t gfp)
 
 	flag = (iov->max_num & VRINGH_IOV_ALLOCATED);
 	if (flag)
-		new = krealloc(iov->iov, new_num * sizeof(struct iovec), gfp);
+		new = krealloc_array(iov->iov, new_num,
+				     sizeof(struct iovec), gfp);
 	else {
 		new = kmalloc_array(new_num, sizeof(struct iovec), gfp);
 		if (new) {
-- 
2.29.1