linux-kernel - [PATCH] fs/ext4: Remove unnecessary zero-initialization via memset

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Message-Id: <20251211123829.2777009-1-dolinux.peng@gmail.com>
Date: Thu, 11 Dec 2025 20:38:29 +0800
From: Donglin Peng <dolinux.peng@...il.com>
To: tytso@....edu
Cc: adilger.kernel@...ger.ca,
	linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	pengdonglin <pengdonglin@...omi.com>
Subject: [PATCH] fs/ext4: Remove unnecessary zero-initialization via memset

From: pengdonglin <pengdonglin@...omi.com>

The d_path function does not require the caller to pre-zero the
buffer.

Signed-off-by: pengdonglin <pengdonglin@...omi.com>
---
 fs/ext4/file.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 7a8b30932189..484cb7388802 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -858,7 +858,6 @@ static int ext4_sample_last_mounted(struct super_block *sb,
 	 * when trying to sort through large numbers of block
 	 * devices or filesystem images.
 	 */
-	memset(buf, 0, sizeof(buf));
 	path.mnt = mnt;
 	path.dentry = mnt->mnt_root;
 	cp = d_path(&path, buf, sizeof(buf));
-- 
2.34.1