((os)->os_secondary_cache == ZFS_CACHE_ALL || \
(os)->os_secondary_cache == ZFS_CACHE_METADATA)
-#define DMU_OS_IS_L2COMPRESSIBLE(os) ((os)->os_compress != ZIO_COMPRESS_OFF)
+#define DMU_OS_IS_L2COMPRESSIBLE(os) (zfs_mdcomp_disable == B_FALSE)
/* called from zpl */
int dmu_objset_hold(const char *name, void *tag, objset_t **osp);