From: Christian Brauner brauner@kernel.org
commit 27a2d0c upstream.
Use the newly added helper for this.
Signed-off-by: Christian Brauner brauner@kernel.org
Cc: stable@vger.kernel.org # 4.19.x-5.4.x Signed-off-by: Miao Wang shankerwangmiao@gmail.com Tested-by: Xi Ruoyao xry111@xry111.site --- 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); }