linux-kernel - [PATCH] fork.c: Use RCU_INIT_POINTER() instead of rcu_access

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Message-Id: <20200127175821.10833-1-madhuparnabhowmik10@gmail.com>
Date:   Mon, 27 Jan 2020 23:28:21 +0530
From:   madhuparnabhowmik10@...il.com
To:     oleg@...hat.com, christian.brauner@...ntu.com, mingo@...nel.org
Cc:     linux-kernel@...r.kernel.org, paulmck@...nel.org,
        joel@...lfernandes.org, frextrite@...il.com, rcu@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        Madhuparna Bhowmik <madhuparnabhowmik10@...il.com>
Subject: [PATCH] fork.c: Use RCU_INIT_POINTER() instead of rcu_access_pointer()

From: Madhuparna Bhowmik <madhuparnabhowmik10@...il.com>

Use RCU_INIT_POINTER() instead of rcu_access_pointer() in
copy_sighand().

Suggested-by: Oleg Nesterov <oleg@...hat.com>
Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@...il.com>
---
 kernel/fork.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/fork.c b/kernel/fork.c
index 2508a4f238a3..42b71d4a50cb 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1508,7 +1508,7 @@ static int copy_sighand(unsigned long clone_flags, struct task_struct *tsk)
 		return 0;
 	}
 	sig = kmem_cache_alloc(sighand_cachep, GFP_KERNEL);
-	rcu_assign_pointer(tsk->sighand, sig);
+	RCU_INIT_POINTER(tsk->sighand, sig);
 	if (!sig)
 		return -ENOMEM;
 
-- 
2.17.1