Index: uspace/lib/c/include/bd.h
===================================================================
--- uspace/lib/c/include/bd.h	(revision 1c635d6076d5ecbddc9b9e9a97d69324a6d97b18)
+++ uspace/lib/c/include/bd.h	(revision 07e28f85b1f999b56eed801d80fd58294df652a4)
@@ -48,4 +48,5 @@
 extern int bd_read_toc(bd_t *, uint8_t, void *, size_t);
 extern int bd_write_blocks(bd_t *, aoff64_t, size_t, const void *, size_t);
+extern int bd_sync_cache(bd_t *, aoff64_t, size_t);
 extern int bd_get_block_size(bd_t *, size_t *);
 extern int bd_get_num_blocks(bd_t *, aoff64_t *);
Index: uspace/lib/c/include/bd_srv.h
===================================================================
--- uspace/lib/c/include/bd_srv.h	(revision 1c635d6076d5ecbddc9b9e9a97d69324a6d97b18)
+++ uspace/lib/c/include/bd_srv.h	(revision 07e28f85b1f999b56eed801d80fd58294df652a4)
@@ -62,4 +62,5 @@
 	int (*read_blocks)(bd_srv_t *, aoff64_t, size_t, void *, size_t);
 	int (*read_toc)(bd_srv_t *, uint8_t, void *, size_t);
+	int (*sync_cache)(bd_srv_t *, aoff64_t, size_t);
 	int (*write_blocks)(bd_srv_t *, aoff64_t, size_t, const void *, size_t);
 	int (*get_block_size)(bd_srv_t *, size_t *);
Index: uspace/lib/c/include/ipc/bd.h
===================================================================
--- uspace/lib/c/include/ipc/bd.h	(revision 1c635d6076d5ecbddc9b9e9a97d69324a6d97b18)
+++ uspace/lib/c/include/ipc/bd.h	(revision 07e28f85b1f999b56eed801d80fd58294df652a4)
@@ -42,4 +42,5 @@
 	BD_GET_NUM_BLOCKS,
 	BD_READ_BLOCKS,
+	BD_SYNC_CACHE,
 	BD_WRITE_BLOCKS,
 	BD_READ_TOC