Index: uspace/lib/ext2/libext2_filesystem.c
===================================================================
--- uspace/lib/ext2/libext2_filesystem.c	(revision 4e362194eb2204d27d9286becf51d9da2d325d51)
+++ uspace/lib/ext2/libext2_filesystem.c	(revision b5085a7f51709451e41245a25f7923e899b78a3c)
@@ -62,5 +62,5 @@
 	fs->device = devmap_handle;
 	
-	rc = block_init(fs->device, 2048);
+	rc = block_init(EXCHANGE_SERIALIZE, fs->device, 2048);
 	if (rc != EOK) {
 		return rc;