loopdev: add module doc

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>

diff --git a/src/tools/loopdev.rs b/src/tools/loopdev.rs
index 9f1d6fd11582339f0d11d5a90a3c61e758435d8b..68918dfd0b7d2b46ce5663e33dc470e090d6fb29 100644 (file)
--- a/src/tools/loopdev.rs
+++ b/src/tools/loopdev.rs
@@ -1,3 +1,5 @@
+//! Helpers to work with /dev/loop* devices
+
 use anyhow::Error;
 use std::fs::{File, OpenOptions};
 use std::path::Path;