gentoo-overlay/sys-block/parted/files/parted-3.2-devmapper.patch

--- a/libparted/arch/linux.c
+++ b/libparted/arch/linux.c
@@ -2304,6 +2304,7 @@
   return r < 0 ? NULL : resultp;
 }
 
+#ifdef ENABLE_DEVICE_MAPPER
 static char *
 dm_canonical_path (PedDevice const *dev)
 {
@@ -2326,12 +2327,22 @@
 err:
         return NULL;
 }
+#endif /* ENABLE_DEVICE_MAPPER */
 
 static char*
 _device_get_part_path (PedDevice const *dev, int num)
 {
-        char *devpath = (dev->type == PED_DEVICE_DM
-                         ? dm_canonical_path (dev) : dev->path);
+        char *devpath =
+#ifdef ENABLE_DEVICE_MAPPER
+                        (
+                         dev->type == PED_DEVICE_DM
+                         ? dm_canonical_path (dev) :
+#endif /* ENABLE_DEVICE_MAPPER */
+						 dev->path
+#ifdef ENABLE_DEVICE_MAPPER
+                        )
+#endif /* ENABLE_DEVICE_MAPPER */
+                        ;
         size_t path_len = strlen (devpath);
         char *result;
         /* Check for devfs-style /disc => /partN transformation
@@ -2945,12 +2956,14 @@
                                                unsigned long long *length);
 
 
+#ifdef ENABLE_DEVICE_MAPPER
         if (disk->dev->type == PED_DEVICE_DM) {
                 add_partition = _dm_add_partition;
                 remove_partition = _dm_remove_partition;
                 resize_partition = _dm_resize_partition;
                 get_partition_start_and_length = _dm_get_partition_start_and_length;
         } else {
+#endif /* ENABLE_DEVICE_MAPPER */
                 add_partition = _blkpg_add_partition;
                 remove_partition = _blkpg_remove_partition;
 #ifdef BLKPG_RESIZE_PARTITION
@@ -2959,7 +2972,9 @@
                 resize_partition = NULL;
 #endif
                 get_partition_start_and_length = _kernel_get_partition_start_and_length;
+#ifdef ENABLE_DEVICE_MAPPER
         }
+#endif /* ENABLE_DEVICE_MAPPER */
 
         /* lpn = largest partition number.
          * for remove pass, use greater of device or label limit */