kernel/sys.c: k_getrusage() can use while_each_thread()

Change k_getrusage() to use while_each_thread(), no changes in the
compiled code.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Kees Cook <keescook@chromium.org>
Reviewed-by: Sameer Nanda <snanda@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/kernel/sys.c b/kernel/sys.c
index ecd3ea12f72a..c0a58be780a4 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1571,8 +1571,7 @@ static void k_getrusage(struct task_struct *p, int who, struct rusage *r)
                         t = p;
                         do {
                                 accumulate_thread_rusage(t, r);
-                                t = next_thread(t);
-                        } while (t != p);
+                        } while_each_thread(p, t);
                         break;
 
                 default: