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* [merged mm-nonmm-stable] getrusage-use-__for_each_thread.patch removed from -mm tree
@ 2023-10-04 20:23 Andrew Morton
  0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2023-10-04 20:23 UTC (permalink / raw)
  To: mm-commits, ebiederm, oleg, akpm


The quilt patch titled
     Subject: getrusage: use __for_each_thread()
has been removed from the -mm tree.  Its filename was
     getrusage-use-__for_each_thread.patch

This patch was dropped because it was merged into the mm-nonmm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Oleg Nesterov <oleg@redhat.com>
Subject: getrusage: use __for_each_thread()
Date: Sat, 9 Sep 2023 19:26:29 +0200

do/while_each_thread should be avoided when possible.

Plus this change allows to avoid lock_task_sighand(), we can use rcu
and/or sig->stats_lock instead.

Link: https://lkml.kernel.org/r/20230909172629.GA20454@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/sys.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/kernel/sys.c~getrusage-use-__for_each_thread
+++ a/kernel/sys.c
@@ -1830,10 +1830,8 @@ void getrusage(struct task_struct *p, in
 		r->ru_oublock += sig->oublock;
 		if (maxrss < sig->maxrss)
 			maxrss = sig->maxrss;
-		t = p;
-		do {
+		__for_each_thread(sig, t)
 			accumulate_thread_rusage(t, r);
-		} while_each_thread(p, t);
 		break;
 
 	default:
_

Patches currently in -mm which might be from oleg@redhat.com are



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2023-10-04 20:23 [merged mm-nonmm-stable] getrusage-use-__for_each_thread.patch removed from -mm tree Andrew Morton

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