From: Christian Brauner <brauner@xxxxxxxxxx>
commit 27a2d0c upstream.
Use the newly added helper for this.
Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # 4.19.x-5.4.x
Signed-off-by: Miao Wang <shankerwangmiao@xxxxxxxxx>
Tested-by: Xi Ruoyao <xry111@xxxxxxxxxxx>
---
fs/stat.c | 11 ++---------
1 file changed, 2 insertions(+), 9 deletions(-)
diff --git a/fs/stat.c b/fs/stat.c
index 3ae958308e48..1aaa5d847db8 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -224,16 +224,9 @@ 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;
+ if (flags == AT_EMPTY_PATH && vfs_empty_path(dfd, filename))
+ return vfs_fstat(dfd, stat);
- ret = get_user(c, filename);
- if (unlikely(ret))
- return ret;
-
- if (likely(!c))
- return vfs_fstat(dfd, stat);
- }
return vfs_statx(dfd, filename, flags | AT_NO_AUTOMOUNT,
stat, STATX_BASIC_STATS);
}
--
2.43.0
