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()
290 	struct scatterlist *sg, *prv;  in __sg_alloc_table()  local
318 			sg = first_chunk;  in __sg_alloc_table()
321 			sg = alloc_fn(alloc_size, gfp_mask);  in __sg_alloc_table()
323 		if (unlikely(!sg)) {  in __sg_alloc_table()
336 		sg_init_table(sg, alloc_size);  in __sg_alloc_table()
344 			sg_chain(prv, prv_max_ents, sg);  in __sg_alloc_table()
346 			table->sgl = sg;  in __sg_alloc_table()
352 			sg_mark_end(&sg[sg_size - 1]);  in __sg_alloc_table()
354 		prv = sg;  in __sg_alloc_table()
615 	struct scatterlist *sgl, *sg;  in sgl_alloc_order()  local
637 	sg = sgl;  in sgl_alloc_order()
646 		sg_set_page(sg, page, elem_len, 0);  in sgl_alloc_order()
648 		sg = sg_next(sg);  in sgl_alloc_order()
687 	struct scatterlist *sg;  in sgl_free_n_order()  local
691 	for_each_sg(sgl, sg, nents, i) {  in sgl_free_n_order()
692 		if (!sg)  in sgl_free_n_order()
694 		page = sg_page(sg);  in sgl_free_n_order()
732 	piter->sg = sglist;  in __sg_page_iter_start()
737 static int sg_page_count(struct scatterlist *sg)  in sg_page_count()  argument
739 	return PAGE_ALIGN(sg->offset + sg->length) >> PAGE_SHIFT;  in sg_page_count()
744 	if (!piter->__nents || !piter->sg)  in __sg_page_iter_next()
750 	while (piter->sg_pgoffset >= sg_page_count(piter->sg)) {  in __sg_page_iter_next()
751 		piter->sg_pgoffset -= sg_page_count(piter->sg);  in __sg_page_iter_next()
752 		piter->sg = sg_next(piter->sg);  in __sg_page_iter_next()
753 		if (!--piter->__nents || !piter->sg)  in __sg_page_iter_next()
761 static int sg_dma_page_count(struct scatterlist *sg)  in sg_dma_page_count()  argument
763 	return PAGE_ALIGN(sg->offset + sg_dma_len(sg)) >> PAGE_SHIFT;  in sg_dma_page_count()
770 	if (!piter->__nents || !piter->sg)  in __sg_page_iter_dma_next()
776 	while (piter->sg_pgoffset >= sg_dma_page_count(piter->sg)) {  in __sg_page_iter_dma_next()
777 		piter->sg_pgoffset -= sg_dma_page_count(piter->sg);  in __sg_page_iter_dma_next()
778 		piter->sg = sg_next(piter->sg);  in __sg_page_iter_dma_next()
779 		if (!--piter->__nents || !piter->sg)  in __sg_page_iter_dma_next()
814 		struct scatterlist *sg;  in sg_miter_get_next_page()  local
819 		sg = miter->piter.sg;  in sg_miter_get_next_page()
821 		miter->__offset = miter->piter.sg_pgoffset ? 0 : sg->offset;  in sg_miter_get_next_page()
824 		miter->__remaining = sg->offset + sg->length -  in sg_miter_get_next_page()
1113 	struct scatterlist *sg = sgtable->sgl + sgtable->nents;  in extract_user_to_sg()  local
1141 			sg_set_page(sg, page, seg, off);  in extract_user_to_sg()
1143 			sg++;  in extract_user_to_sg()
1168 	struct scatterlist *sg = sgtable->sgl + sgtable->nents;  in extract_bvec_to_sg()  local
1185 		sg_set_page(sg, bv[i].bv_page, len, off);  in extract_bvec_to_sg()
1187 		sg++;  in extract_bvec_to_sg()
1214 	struct scatterlist *sg = sgtable->sgl + sgtable->nents;  in extract_kvec_to_sg()  local
1244 			sg_set_page(sg, page, len, off);  in extract_kvec_to_sg()
1246 			sg++;  in extract_kvec_to_sg()
1274 	struct scatterlist *sg = sgtable->sgl + sgtable->nents;  in extract_xarray_to_sg()  local
1296 		sg_set_page(sg, folio_page(folio, 0), len, offset);  in extract_xarray_to_sg()
1298 		sg++;  in extract_xarray_to_sg()