25 struct scatterlist *sg_next(struct scatterlist *sg)  in sg_next()  argument
27 	if (sg_is_last(sg))  in sg_next()
30 	sg++;  in sg_next()
31 	if (unlikely(sg_is_chain(sg)))  in sg_next()
32 		sg = sg_chain_ptr(sg);  in sg_next()
34 	return sg;  in sg_next()
47 int sg_nents(struct scatterlist *sg)  in sg_nents()  argument
50 	for (nents = 0; sg; sg = sg_next(sg))  in sg_nents()
70 int sg_nents_for_len(struct scatterlist *sg, u64 len)  in sg_nents_for_len()  argument
78 	for (nents = 0, total = 0; sg; sg = sg_next(sg)) {  in sg_nents_for_len()
80 		total += sg->length;  in sg_nents_for_len()
105 	struct scatterlist *sg, *ret = NULL;  in sg_last()  local
108 	for_each_sg(sgl, sg, nents, i)  in sg_last()
109 		ret = sg;  in sg_last()
140 void sg_init_one(struct scatterlist *sg, const void *buf, unsigned int buflen)  in sg_init_one()  argument
142 	sg_init_table(sg, 1);  in sg_init_one()
143 	sg_set_buf(sg, buf, buflen);  in sg_init_one()
171 static void sg_kfree(struct scatterlist *sg, unsigned int nents)  in sg_kfree()  argument
174 		kmemleak_free(sg);  in sg_kfree()
175 		free_page((unsigned long) sg);  in sg_kfree()
177 		kfree(sg);  in sg_kfree()
267 	struct scatterlist *sg, *prv;  in __sg_alloc_table()  local
293 			sg = first_chunk;  in __sg_alloc_table()
296 			sg = alloc_fn(alloc_size, gfp_mask);  in __sg_alloc_table()
298 		if (unlikely(!sg)) {  in __sg_alloc_table()
311 		sg_init_table(sg, alloc_size);  in __sg_alloc_table()
319 			sg_chain(prv, max_ents, sg);  in __sg_alloc_table()
321 			table->sgl = sg;  in __sg_alloc_table()
327 			sg_mark_end(&sg[sg_size - 1]);  in __sg_alloc_table()
329 		prv = sg;  in __sg_alloc_table()
482 	struct scatterlist *sgl, *sg;  in sgl_alloc_order()  local
504 	sg = sgl;  in sgl_alloc_order()
513 		sg_set_page(sg, page, elem_len, 0);  in sgl_alloc_order()
515 		sg = sg_next(sg);  in sgl_alloc_order()
554 	struct scatterlist *sg;  in sgl_free_n_order()  local
558 	for_each_sg(sgl, sg, nents, i) {  in sgl_free_n_order()
559 		if (!sg)  in sgl_free_n_order()
561 		page = sg_page(sg);  in sgl_free_n_order()
599 	piter->sg = sglist;  in __sg_page_iter_start()
604 static int sg_page_count(struct scatterlist *sg)  in sg_page_count()  argument
606 	return PAGE_ALIGN(sg->offset + sg->length) >> PAGE_SHIFT;  in sg_page_count()
611 	if (!piter->__nents || !piter->sg)  in __sg_page_iter_next()
617 	while (piter->sg_pgoffset >= sg_page_count(piter->sg)) {  in __sg_page_iter_next()
618 		piter->sg_pgoffset -= sg_page_count(piter->sg);  in __sg_page_iter_next()
619 		piter->sg = sg_next(piter->sg);  in __sg_page_iter_next()
620 		if (!--piter->__nents || !piter->sg)  in __sg_page_iter_next()
654 		struct scatterlist *sg;  in sg_miter_get_next_page()  local
660 		sg = miter->piter.sg;  in sg_miter_get_next_page()
663 		miter->__offset = pgoffset ? 0 : sg->offset;  in sg_miter_get_next_page()
664 		miter->__remaining = sg->offset + sg->length -  in sg_miter_get_next_page()