37 static void zcomp_strm_free(struct zcomp_strm *zstrm)  in zcomp_strm_free()  argument
39 	if (!IS_ERR_OR_NULL(zstrm->tfm))  in zcomp_strm_free()
40 		crypto_free_comp(zstrm->tfm);  in zcomp_strm_free()
41 	vfree(zstrm->buffer);  in zcomp_strm_free()
42 	zstrm->tfm = NULL;  in zcomp_strm_free()
43 	zstrm->buffer = NULL;  in zcomp_strm_free()
50 static int zcomp_strm_init(struct zcomp_strm *zstrm, struct zcomp *comp)  in zcomp_strm_init()  argument
52 	zstrm->tfm = crypto_alloc_comp(comp->name, 0, 0);  in zcomp_strm_init()
57 	zstrm->buffer = vzalloc(2 * PAGE_SIZE);  in zcomp_strm_init()
58 	if (IS_ERR_OR_NULL(zstrm->tfm) || !zstrm->buffer) {  in zcomp_strm_init()
59 		zcomp_strm_free(zstrm);  in zcomp_strm_init()
118 int zcomp_compress(struct zcomp_strm *zstrm,  in zcomp_compress()  argument
137 	return crypto_comp_compress(zstrm->tfm,  in zcomp_compress()
139 			zstrm->buffer, dst_len);  in zcomp_compress()
142 int zcomp_decompress(struct zcomp_strm *zstrm,  in zcomp_decompress()  argument
147 	return crypto_comp_decompress(zstrm->tfm,  in zcomp_decompress()
155 	struct zcomp_strm *zstrm;  in zcomp_cpu_up_prepare()  local
158 	zstrm = per_cpu_ptr(comp->stream, cpu);  in zcomp_cpu_up_prepare()
159 	local_lock_init(&zstrm->lock);  in zcomp_cpu_up_prepare()
161 	ret = zcomp_strm_init(zstrm, comp);  in zcomp_cpu_up_prepare()
170 	struct zcomp_strm *zstrm;  in zcomp_cpu_dead()  local
172 	zstrm = per_cpu_ptr(comp->stream, cpu);  in zcomp_cpu_dead()
173 	zcomp_strm_free(zstrm);  in zcomp_cpu_dead()