[PATCH 6.1 66/71] fs/proc: do_task_stat: use __for_each_thread()

[Sasha Levin]

From: Oleg Nesterov <oleg@xxxxxxxxxx>

[ Upstream commit 7904e53ed5a20fc678c01d5d1b07ec486425bb6a ]

do/while_each_thread should be avoided when possible.

Link: https://lkml.kernel.org/r/20230909164501.GA11581@xxxxxxxxxx
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Stable-dep-of: 7601df8031fd ("fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 fs/proc/array.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 1b0d78dfd20f9..bcb645627991e 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -526,12 +526,13 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
 
 		/* add up live thread stats at the group level */
 		if (whole) {
-			struct task_struct *t = task;
-			do {
+			struct task_struct *t;
+
+			__for_each_thread(sig, t) {
 				min_flt += t->min_flt;
 				maj_flt += t->maj_flt;
 				gtime += task_gtime(t);
-			} while_each_thread(task, t);
+			}
 
 			min_flt += sig->min_flt;
 			maj_flt += sig->maj_flt;
-- 
2.43.0