769 				       const struct page_frag *pfrag,  in mptcp_frag_can_collapse_to()  argument
772 	return df && pfrag->page == df->page &&  in mptcp_frag_can_collapse_to()
773 		pfrag->offset == (df->offset + df->data_len) &&  in mptcp_frag_can_collapse_to()
863 static bool mptcp_page_frag_refill(struct sock *sk, struct page_frag *pfrag)  in mptcp_page_frag_refill()  argument
866 					pfrag, sk->sk_allocation)))  in mptcp_page_frag_refill()
875 mptcp_carve_data_frag(const struct mptcp_sock *msk, struct page_frag *pfrag,  in mptcp_carve_data_frag()  argument
881 	dfrag = (struct mptcp_data_frag *)(page_to_virt(pfrag->page) + offset);  in mptcp_carve_data_frag()
886 	dfrag->page = pfrag->page;  in mptcp_carve_data_frag()
902 	struct page_frag *pfrag;  in mptcp_sendmsg_frag()  local
912 	pfrag = sk_page_frag(sk);  in mptcp_sendmsg_frag()
915 		page = pfrag->page;  in mptcp_sendmsg_frag()
949 		offset = pfrag->offset;  in mptcp_sendmsg_frag()
950 		dfrag_collapsed = mptcp_frag_can_collapse_to(msk, pfrag, dfrag);  in mptcp_sendmsg_frag()
952 			dfrag = mptcp_carve_data_frag(msk, pfrag, offset);  in mptcp_sendmsg_frag()
956 		psize = min_t(size_t, pfrag->size - offset, avail_size);  in mptcp_sendmsg_frag()
960 		psize = copy_page_from_iter(pfrag->page, offset,  in mptcp_sendmsg_frag()
1040 		pfrag->offset += frag_truesize;  in mptcp_sendmsg_frag()
1175 	struct page_frag *pfrag;  in mptcp_sendmsg()  local
1195 	pfrag = sk_page_frag(sk);  in mptcp_sendmsg()
1208 	       !mptcp_page_frag_refill(ssk, pfrag)) {  in mptcp_sendmsg()
1268 		    !mptcp_page_frag_refill(ssk, pfrag) ||  in mptcp_sendmsg()