52 	int nents;  in sg_nents()  local
53 	for (nents = 0; sg; sg = sg_next(sg))  in sg_nents()
54 		nents++;  in sg_nents()
55 	return nents;  in sg_nents()
75 	int nents;  in sg_nents_for_len()  local
81 	for (nents = 0, total = 0; sg; sg = sg_next(sg)) {  in sg_nents_for_len()
82 		nents++;  in sg_nents_for_len()
85 			return nents;  in sg_nents_for_len()
106 struct scatterlist *sg_last(struct scatterlist *sgl, unsigned int nents)  in sg_last()  argument
111 	for_each_sg(sgl, sg, nents, i)  in sg_last()
132 void sg_init_table(struct scatterlist *sgl, unsigned int nents)  in sg_init_table()  argument
134 	memset(sgl, 0, sizeof(*sgl) * nents);  in sg_init_table()
138 		for (i = 0; i < nents; i++)  in sg_init_table()
142 	sg_mark_end(&sgl[nents - 1]);  in sg_init_table()
164 static struct scatterlist *sg_kmalloc(unsigned int nents, gfp_t gfp_mask)  in sg_kmalloc()  argument
166 	if (nents == SG_MAX_SINGLE_ALLOC) {  in sg_kmalloc()
180 		return kmalloc(nents * sizeof(struct scatterlist), gfp_mask);  in sg_kmalloc()
183 static void sg_kfree(struct scatterlist *sg, unsigned int nents)  in sg_kfree()  argument
185 	if (nents == SG_MAX_SINGLE_ALLOC) {  in sg_kfree()
275 int __sg_alloc_table(struct sg_table *table, unsigned int nents,  in __sg_alloc_table()  argument
284 	if (nents == 0)  in __sg_alloc_table()
287 	if (WARN_ON_ONCE(nents > max_ents))  in __sg_alloc_table()
291 	left = nents;  in __sg_alloc_table()
318 				table->nents = ++table->orig_nents;  in __sg_alloc_table()
324 		table->nents = table->orig_nents += sg_size;  in __sg_alloc_table()
359 int sg_alloc_table(struct sg_table *table, unsigned int nents, gfp_t gfp_mask)  in sg_alloc_table()  argument
363 	ret = __sg_alloc_table(table, nents, SG_MAX_SINGLE_ALLOC,  in sg_alloc_table()
437 			  struct scatterlist *sglist, unsigned int nents,  in __sg_page_iter_start()  argument
441 	piter->__nents = nents;  in __sg_page_iter_start()
485 		    unsigned int nents, unsigned int flags)  in sg_miter_start()  argument
489 	__sg_page_iter_start(&miter->piter, sgl, nents, 0);  in sg_miter_start()
649 size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents, void *buf,  in sg_copy_buffer()  argument
662 	sg_miter_start(&miter, sgl, nents, sg_flags);  in sg_copy_buffer()
699 size_t sg_copy_from_buffer(struct scatterlist *sgl, unsigned int nents,  in sg_copy_from_buffer()  argument
702 	return sg_copy_buffer(sgl, nents, (void *)buf, buflen, 0, false);  in sg_copy_from_buffer()
716 size_t sg_copy_to_buffer(struct scatterlist *sgl, unsigned int nents,  in sg_copy_to_buffer()  argument
719 	return sg_copy_buffer(sgl, nents, buf, buflen, 0, true);  in sg_copy_to_buffer()
734 size_t sg_pcopy_from_buffer(struct scatterlist *sgl, unsigned int nents,  in sg_pcopy_from_buffer()  argument
737 	return sg_copy_buffer(sgl, nents, (void *)buf, buflen, skip, false);  in sg_pcopy_from_buffer()
752 size_t sg_pcopy_to_buffer(struct scatterlist *sgl, unsigned int nents,  in sg_pcopy_to_buffer()  argument
755 	return sg_copy_buffer(sgl, nents, buf, buflen, skip, true);  in sg_pcopy_to_buffer()