diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 9f1e0e4f7464..368e4fa3b43c 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1667,8 +1667,8 @@ static int __ip6_append_data(struct sock *sk,
 				  !(rt->dst.dev->features & NETIF_F_SG)))
 				alloclen = fraglen;
 			else {
-				alloclen = fragheaderlen + transhdrlen;
-				pagedlen = datalen - transhdrlen;
+				alloclen = fragheaderlen + transhdrlen + fraggap;
+				pagedlen = datalen - transhdrlen - fraggap;
 			}
 			alloclen += alloc_extra;
 
@@ -1683,10 +1683,7 @@ static int __ip6_append_data(struct sock *sk,
 			fraglen = datalen + fragheaderlen;
 
 			copy = datalen - transhdrlen - fraggap - pagedlen;
-			/* [!] NOTE: copy may be negative if pagedlen>0
-			 * because then the equation may reduces to -fraggap.
-			 */
-			if (copy < 0 && !(flags & MSG_SPLICE_PAGES)) {
+			if (copy < 0) {
 				err = -EINVAL;
 				goto error;
 			}