Convert the user_path_at() call inside a retry loop into getname_flags() + filename_lookup() + putname() and leave only filename_lookup() inside the loop.
In this case we never pass LOOKUP_EMPTY, so getname_flags() is equivalent to plain getname(). The things could be further simplified by use of cleanup.h stuff, but let's not clutter the patch with that. Signed-off-by: Al Viro <[email protected]> --- fs/statfs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/statfs.c b/fs/statfs.c index a45ac85e6048..a5671bf6c7f0 100644 --- a/fs/statfs.c +++ b/fs/statfs.c @@ -99,8 +99,9 @@ int user_statfs(const char __user *pathname, struct kstatfs *st) struct path path; int error; unsigned int lookup_flags = LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT; + struct filename *name = getname(pathname); retry: - error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path); + error = filename_lookup(AT_FDCWD, name, lookup_flags, &path, NULL); if (!error) { error = vfs_statfs(&path, st); path_put(&path); @@ -109,6 +110,7 @@ int user_statfs(const char __user *pathname, struct kstatfs *st) goto retry; } } + putname(name); return error; } -- 2.47.3
