3069  * at the end of the spd in case we error'ed out in filling the pipe.
3071 static void sock_spd_release(struct splice_pipe_desc *spd, unsigned int i)  in sock_spd_release()  argument
3073 	put_page(spd->pages[i]);  in sock_spd_release()
3095 static bool spd_can_coalesce(const struct splice_pipe_desc *spd,  in spd_can_coalesce()  argument
3099 	return	spd->nr_pages &&  in spd_can_coalesce()
3100 		spd->pages[spd->nr_pages - 1] == page &&  in spd_can_coalesce()
3101 		(spd->partial[spd->nr_pages - 1].offset +  in spd_can_coalesce()
3102 		 spd->partial[spd->nr_pages - 1].len == offset);  in spd_can_coalesce()
3106  * Fill page/offset/length into spd, if it can hold more pages.
3108 static bool spd_fill_page(struct splice_pipe_desc *spd, struct page *page,  in spd_fill_page()  argument
3112 	if (unlikely(spd->nr_pages == MAX_SKB_FRAGS))  in spd_fill_page()
3120 	if (spd_can_coalesce(spd, page, offset)) {  in spd_fill_page()
3121 		spd->partial[spd->nr_pages - 1].len += *len;  in spd_fill_page()
3125 	spd->pages[spd->nr_pages] = page;  in spd_fill_page()
3126 	spd->partial[spd->nr_pages].len = *len;  in spd_fill_page()
3127 	spd->partial[spd->nr_pages].offset = offset;  in spd_fill_page()
3128 	spd->nr_pages++;  in spd_fill_page()
3136 			     struct splice_pipe_desc *spd, bool linear,  in __splice_segment()  argument
3156 		if (spd_fill_page(spd, page, &flen, poff, linear, sk))  in __splice_segment()
3169  * Map linear and fragment data from the skb to spd. It reports true if the
3174 			      struct splice_pipe_desc *spd, struct sock *sk)  in __skb_splice_bits()  argument
3187 			     offset, len, spd,  in __skb_splice_bits()
3206 				     offset, len, spd, false, sk))  in __skb_splice_bits()
3219 		if (__skb_splice_bits(iter, pipe, offset, len, spd, sk))  in __skb_splice_bits()
3236 	struct splice_pipe_desc spd = {  in skb_splice_bits()  local
3245 	__skb_splice_bits(skb, pipe, &offset, &tlen, &spd, sk);  in skb_splice_bits()
3247 	if (spd.nr_pages)  in skb_splice_bits()
3248 		ret = splice_to_pipe(pipe, &spd);  in skb_splice_bits()