From: Maninder Singh <maninder1.s@samsung.com>
Date: Tue, 3 Mar 2026 10:26:00 +0000 (+0530)
Subject: mm/oom_kill.c: simpilfy rcu call with guard(rcu)
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=909632714f687560627f3e8c21fb5f5180373afd;p=thirdparty%2Fkernel%2Flinux.git

mm/oom_kill.c: simpilfy rcu call with guard(rcu)

guard(rcu)() simplifies code readability and there is no need of extra
goto labels.

Thus replacing rcu_read_lock/unlock with guard(rcu)().

Link: https://lkml.kernel.org/r/20260303102600.105255-1-maninder1.s@samsung.com
Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Dmitry Ilvokhin <d@ilvokhin.com>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 54b7a8fe51366..5f372f6e26fa3 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -135,19 +135,16 @@ struct task_struct *find_lock_task_mm(struct task_struct *p)
 {
 	struct task_struct *t;
 
-	rcu_read_lock();
+	guard(rcu)();
 
 	for_each_thread(p, t) {
 		task_lock(t);
 		if (likely(t->mm))
-			goto found;
+			return t;
 		task_unlock(t);
 	}
-	t = NULL;
-found:
-	rcu_read_unlock();
 
-	return t;
+	return NULL;
 }
 
 /*