1diff --git a/src/catfs/file.rs b/src/catfs/file.rs
2index 6e781eb..92fdd80 100644
3--- a/src/catfs/file.rs
4+++ b/src/catfs/file.rs
5@@ -569,7 +569,7 @@ impl Handle {
6 path: &dyn AsRef<Path>,
7 create: bool,
8 ) -> error::Result<()> {
9- let _ = self.page_in_res.0.lock().unwrap();
10+ drop(self.page_in_res.0.lock().unwrap());
11
12 let mut buf = [0u8; 0];
13 let mut flags = rlibc::O_RDWR;