158 static int setup_sgtable(struct sg_table *sgt, struct scatterlist *prealloc_sg,  in setup_sgtable()  argument
170 		memset(sgt, 0, sizeof(*sgt));  in setup_sgtable()
180 		ret = sg_alloc_table(sgt, chunk_cnt, GFP_NOFS);  in setup_sgtable()
186 		sgt->sgl = prealloc_sg;  in setup_sgtable()
187 		sgt->nents = sgt->orig_nents = 1;  in setup_sgtable()
190 	for_each_sg(sgt->sgl, sg, sgt->orig_nents, i) {  in setup_sgtable()
210 static void teardown_sgtable(struct sg_table *sgt)  in teardown_sgtable()  argument
212 	if (sgt->orig_nents > 1)  in teardown_sgtable()
213 		sg_free_table(sgt);  in teardown_sgtable()
220 	struct sg_table sgt;  in ceph_aes_crypt()  local
230 	ret = setup_sgtable(&sgt, &prealloc_sg, buf, crypt_len);  in ceph_aes_crypt()
237 	skcipher_request_set_crypt(req, sgt.sgl, sgt.sgl, crypt_len, iv);  in ceph_aes_crypt()
276 	teardown_sgtable(&sgt);  in ceph_aes_crypt()