87 	struct bio_crypt_ctx *bc;  in bio_crypt_set_ctx()  local
95 	bc = mempool_alloc(bio_crypt_ctx_pool, gfp_mask);  in bio_crypt_set_ctx()
97 	bc->bc_key = key;  in bio_crypt_set_ctx()
98 	memcpy(bc->bc_dun, dun, sizeof(bc->bc_dun));  in bio_crypt_set_ctx()
100 	bio->bi_crypt_context = bc;  in bio_crypt_set_ctx()
139 	struct bio_crypt_ctx *bc = bio->bi_crypt_context;  in __bio_crypt_advance()  local
141 	bio_crypt_dun_increment(bc->bc_dun,  in __bio_crypt_advance()
142 				bytes >> bc->bc_key->data_unit_size_bits);  in __bio_crypt_advance()
149 bool bio_crypt_dun_is_contiguous(const struct bio_crypt_ctx *bc,  in bio_crypt_dun_is_contiguous()  argument
154 	unsigned int carry = bytes >> bc->bc_key->data_unit_size_bits;  in bio_crypt_dun_is_contiguous()
157 		if (bc->bc_dun[i] + carry != next_dun[i])  in bio_crypt_dun_is_contiguous()
163 		if ((bc->bc_dun[i] + carry) < carry)  in bio_crypt_dun_is_contiguous()