From: Christian Brauner <brauner@kernel.org>
Date: Tue, 30 Apr 2024 11:57:58 +0000 (+0200)
Subject: stat: use vfs_empty_path() helper
X-Git-Tag: io_uring-6.11-20240722~150^2~3
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=27a2d0cb2f38c67b58285e6124b14f7fff3fd1a8;p=linux-block.git

stat: use vfs_empty_path() helper

Use the newly added helper for this.

Signed-off-by: Christian Brauner <brauner@kernel.org>
---

diff --git a/fs/stat.c b/fs/stat.c
index 16aa1f5ceec4..5039c34a385d 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -289,16 +289,8 @@ int vfs_fstatat(int dfd, const char __user *filename,
 	 * If AT_EMPTY_PATH is set, we expect the common case to be that
 	 * empty path, and avoid doing all the extra pathname work.
 	 */
-	if (dfd >= 0 && flags == AT_EMPTY_PATH) {
-		char c;
-
-		ret = get_user(c, filename);
-		if (unlikely(ret))
-			return ret;
-
-		if (likely(!c))
-			return vfs_fstat(dfd, stat);
-	}
+	if (flags == AT_EMPTY_PATH && vfs_empty_path(dfd, filename))
+		return vfs_fstat(dfd, stat);
 
 	name = getname_flags(filename, getname_statx_lookup_flags(statx_flags));
 	ret = vfs_statx(dfd, name, statx_flags, stat, STATX_BASIC_STATS);