952 csum_page(struct page *page, int offset, int copy)  in csum_page()  argument
957 	csum = csum_partial(kaddr + offset, copy, 0);  in csum_page()
980 	int copy;  in __ip_append_data()  local
1051 		copy = mtu - skb->len;  in __ip_append_data()
1052 		if (copy < length)  in __ip_append_data()
1053 			copy = maxfraglen - skb->len;  in __ip_append_data()
1054 		if (copy <= 0) {  in __ip_append_data()
1145 			copy = datalen - transhdrlen - fraggap - pagedlen;  in __ip_append_data()
1146 			if (copy > 0 && getfrag(from, data + transhdrlen, offset, copy, fraggap, skb) < 0) {  in __ip_append_data()
1152 			offset += copy;  in __ip_append_data()
1153 			length -= copy + transhdrlen;  in __ip_append_data()
1180 		if (copy > length)  in __ip_append_data()
1181 			copy = length;  in __ip_append_data()
1184 		    skb_tailroom(skb) >= copy) {  in __ip_append_data()
1188 			if (getfrag(from, skb_put(skb, copy),  in __ip_append_data()
1189 					offset, copy, off, skb) < 0) {  in __ip_append_data()
1212 			copy = min_t(int, copy, pfrag->size - pfrag->offset);  in __ip_append_data()
1215 				    offset, copy, skb->len, skb) < 0)  in __ip_append_data()
1218 			pfrag->offset += copy;  in __ip_append_data()
1219 			skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy);  in __ip_append_data()
1220 			skb->len += copy;  in __ip_append_data()
1221 			skb->data_len += copy;  in __ip_append_data()
1222 			skb->truesize += copy;  in __ip_append_data()
1223 			wmem_alloc_delta += copy;  in __ip_append_data()
1225 			err = skb_zerocopy_iter_dgram(skb, from, copy);  in __ip_append_data()
1229 		offset += copy;  in __ip_append_data()
1230 		length -= copy;  in __ip_append_data()