From f380b5e24e7dd796d3136c766fc78b9d1374921f Mon Sep 17 00:00:00 2001
From: oech3 <79379754+oech3@users.noreply.github.com>
Date: Thu, 13 Aug 2026 21:34:48 +0900
Subject: [PATCH] df: simplify fn find_mount_point

---
 src/uu/df/src/filesystem.rs | 14 +++-----------
 1 file changed, 3 insertions(+), 11 deletions(-)

diff --git a/src/uu/df/src/filesystem.rs b/src/uu/df/src/filesystem.rs
index 1a672642de0..e00964e03ba 100644
--- a/src/uu/df/src/filesystem.rs
+++ b/src/uu/df/src/filesystem.rs
@@ -74,23 +74,15 @@ pub(crate) fn find_mount_point<P: AsRef<Path>>(path: P) -> io::Result<PathBuf> {
     let mut current = path.as_ref().canonicalize()?;
     let current_dev = current.metadata()?.dev();
 
-    loop {
-        let parent = match current.parent() {
-            Some(p) if !p.as_os_str().is_empty() => p,
-            _ => return Ok(current),
-        };
-
+    while let Some(parent) = current.parent().filter(|p| !p.as_os_str().is_empty()) {
         let parent_dev = parent.metadata()?.dev();
-        if parent_dev != current_dev {
-            return Ok(current);
-        }
-
-        if parent == current {
+        if parent_dev != current_dev || parent == current {
             return Ok(current);
         }
 
         current = parent.to_path_buf();
     }
+    Ok(current)
 }
 
 /// Find the mount info that best matches a given filesystem path.