linux-kernel - [PATCH v5 12/18] cred: Move call_rcu() to call_rcu

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Message-Id: <20220901221720.1105021-13-joel@joelfernandes.org>
Date:   Thu,  1 Sep 2022 22:17:14 +0000
From:   "Joel Fernandes (Google)" <joel@...lfernandes.org>
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, rushikesh.s.kadam@...el.com,
        urezki@...il.com, neeraj.iitr10@...il.com, frederic@...nel.org,
        paulmck@...nel.org, rostedt@...dmis.org, vineeth@...byteword.org,
        boqun.feng@...il.com,
        "Joel Fernandes (Google)" <joel@...lfernandes.org>
Subject: [PATCH v5 12/18] cred: Move call_rcu() to call_rcu_lazy()

This is required to prevent callbacks triggering RCU machinery too
quickly and too often, which adds more power to the system.

Signed-off-by: Joel Fernandes (Google) <joel@...lfernandes.org>
---
 kernel/cred.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/cred.c b/kernel/cred.c
index e10c15f51c1f..c7cb2e3ac73a 100644
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -150,7 +150,7 @@ void __put_cred(struct cred *cred)
 	if (cred->non_rcu)
 		put_cred_rcu(&cred->rcu);
 	else
-		call_rcu(&cred->rcu, put_cred_rcu);
+		call_rcu_lazy(&cred->rcu, put_cred_rcu);
 }
 EXPORT_SYMBOL(__put_cred);
 
-- 
2.37.2.789.g6183377224-goog