Flush on unmount

Author: alexkazik

CHANGELOG.md

@@ -49,6 +49,7 @@ Bug fixes:
 * Fill FAT32 root directory clusters with zeros after allocation to avoid interpreting old data as directory entries
 * Put '.' and '..' in the first two directory entries. (fixes "Expected a valid '.' entry in this slot." fsck error)
 * Set the cluster number to 0 in the ".." directory entry if it points to the root dir
+* Flush on unmount
 
 0.3.4 (2020-07-20)
 ------------------

src/fs.rs

@@ -577,6 +577,7 @@ impl<IO: Read + Write + Seek, TP, OCC> FileSystem<IO, TP, OCC> {
     fn unmount_internal(&self) -> Result<(), Error<IO::Error>> {
         self.flush_fs_info()?;
         self.set_dirty_flag(false)?;
+        self.disk.borrow_mut().flush()?;
         Ok(())
     }