49 	int nents;  in sg_nents()  local
50 	for (nents = 0; sg; sg = sg_next(sg))  in sg_nents()
51 		nents++;  in sg_nents()
52 	return nents;  in sg_nents()
72 	int nents;  in sg_nents_for_len()  local
78 	for (nents = 0, total = 0; sg; sg = sg_next(sg)) {  in sg_nents_for_len()
79 		nents++;  in sg_nents_for_len()
82 			return nents;  in sg_nents_for_len()
103 struct scatterlist *sg_last(struct scatterlist *sgl, unsigned int nents)  in sg_last()  argument
108 	for_each_sg(sgl, sg, nents, i)  in sg_last()
126 void sg_init_table(struct scatterlist *sgl, unsigned int nents)  in sg_init_table()  argument
128 	memset(sgl, 0, sizeof(*sgl) * nents);  in sg_init_table()
129 	sg_init_marker(sgl, nents);  in sg_init_table()
151 static struct scatterlist *sg_kmalloc(unsigned int nents, gfp_t gfp_mask)  in sg_kmalloc()  argument
153 	if (nents == SG_MAX_SINGLE_ALLOC) {  in sg_kmalloc()
167 		return kmalloc_array(nents, sizeof(struct scatterlist),  in sg_kmalloc()
171 static void sg_kfree(struct scatterlist *sg, unsigned int nents)  in sg_kfree()  argument
173 	if (nents == SG_MAX_SINGLE_ALLOC) {  in sg_kfree()
285 int __sg_alloc_table(struct sg_table *table, unsigned int nents,  in __sg_alloc_table()  argument
297 	if (nents == 0)  in __sg_alloc_table()
300 	if (WARN_ON_ONCE(nents > max_ents))  in __sg_alloc_table()
304 	left = nents;  in __sg_alloc_table()
331 				table->nents = ++table->orig_nents;  in __sg_alloc_table()
337 		table->nents = table->orig_nents += sg_size;  in __sg_alloc_table()
374 int sg_alloc_table(struct sg_table *table, unsigned int nents, gfp_t gfp_mask)  in sg_alloc_table()  argument
378 	ret = __sg_alloc_table(table, nents, SG_MAX_SINGLE_ALLOC,  in sg_alloc_table()
545 	sgt_append->sgt.nents += added_nents;  in sg_alloc_append_table_from_pages()
546 	sgt_append->sgt.orig_nents = sgt_append->sgt.nents;  in sg_alloc_append_table_from_pages()
685 void sgl_free_n_order(struct scatterlist *sgl, int nents, int order)  in sgl_free_n_order()  argument
691 	for_each_sg(sgl, sg, nents, i) {  in sgl_free_n_order()
726 			  struct scatterlist *sglist, unsigned int nents,  in __sg_page_iter_start()  argument
730 	piter->__nents = nents;  in __sg_page_iter_start()
801 		    unsigned int nents, unsigned int flags)  in sg_miter_start()  argument
805 	__sg_page_iter_start(&miter->piter, sgl, nents, 0);  in sg_miter_start()
962 size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents, void *buf,  in sg_copy_buffer()  argument
974 	sg_miter_start(&miter, sgl, nents, sg_flags);  in sg_copy_buffer()
1008 size_t sg_copy_from_buffer(struct scatterlist *sgl, unsigned int nents,  in sg_copy_from_buffer()  argument
1011 	return sg_copy_buffer(sgl, nents, (void *)buf, buflen, 0, false);  in sg_copy_from_buffer()
1025 size_t sg_copy_to_buffer(struct scatterlist *sgl, unsigned int nents,  in sg_copy_to_buffer()  argument
1028 	return sg_copy_buffer(sgl, nents, buf, buflen, 0, true);  in sg_copy_to_buffer()
1043 size_t sg_pcopy_from_buffer(struct scatterlist *sgl, unsigned int nents,  in sg_pcopy_from_buffer()  argument
1046 	return sg_copy_buffer(sgl, nents, (void *)buf, buflen, skip, false);  in sg_pcopy_from_buffer()
1061 size_t sg_pcopy_to_buffer(struct scatterlist *sgl, unsigned int nents,  in sg_pcopy_to_buffer()  argument
1064 	return sg_copy_buffer(sgl, nents, buf, buflen, skip, true);  in sg_pcopy_to_buffer()
1077 size_t sg_zero_buffer(struct scatterlist *sgl, unsigned int nents,  in sg_zero_buffer()  argument
1084 	sg_miter_start(&miter, sgl, nents, sg_flags);  in sg_zero_buffer()
1113 	struct scatterlist *sg = sgtable->sgl + sgtable->nents;  in extract_user_to_sg()
1142 			sgtable->nents++;  in extract_user_to_sg()
1152 	while (sgtable->nents > sgtable->orig_nents)  in extract_user_to_sg()
1153 		unpin_user_page(sg_page(&sgtable->sgl[--sgtable->nents]));  in extract_user_to_sg()
1168 	struct scatterlist *sg = sgtable->sgl + sgtable->nents;  in extract_bvec_to_sg()
1186 		sgtable->nents++;  in extract_bvec_to_sg()
1214 	struct scatterlist *sg = sgtable->sgl + sgtable->nents;  in extract_kvec_to_sg()
1245 			sgtable->nents++;  in extract_kvec_to_sg()
1274 	struct scatterlist *sg = sgtable->sgl + sgtable->nents;  in extract_xarray_to_sg()
1297 		sgtable->nents++;  in extract_xarray_to_sg()