The patch titled
Subject: fs/proc: do_task_stat: use __for_each_thread()
has been added to the -mm mm-nonmm-unstable branch. Its filename is
fs-proc-do_task_stat-use-__for_each_thread.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/fs-proc-do_task_stat-use-__for_each_thread.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Subject: fs/proc: do_task_stat: use __for_each_thread()
Date: Sat, 9 Sep 2023 18:45:01 +0200
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>
---
fs/proc/array.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/fs/proc/array.c~fs-proc-do_task_stat-use-__for_each_thread
+++ a/fs/proc/array.c
@@ -536,12 +536,13 @@ static int do_task_stat(struct seq_file
/* 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;
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
introduce-__next_thread-fix-next_tid-vs-exec-race.patch
change-next_thread-to-use-__next_thread-group_leader.patch
change-thread_group_empty-to-use-task_struct-thread_node.patch
kill-task_struct-thread_group.patch
__kill_pgrp_info-simplify-the-calculation-of-return-value.patch
fs-proc-do_task_stat-use-__for_each_thread.patch
signal-complete_signal-use-__for_each_thread.patch
getrusage-add-the-signal_struct-sig-local-variable.patch
getrusage-use-__for_each_thread.patch
taskstats-fill_stats_for_tgid-use-for_each_thread.patch
