From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreea-Cristina Bernat Subject: [PATCH] tcm_fc: Replace rcu_assign_pointer() with RCU_INIT_POINTER() Date: Mon, 18 Aug 2014 15:05:37 +0300 Message-ID: <20140818120537.GA19578@ada> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: target-devel-owner@vger.kernel.org To: nab@linux-iscsi.org, agrover@redhat.com, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, linux-kernel@vger.kernel.org Cc: paulmck@linux.vnet.ibm.com List-Id: linux-scsi@vger.kernel.org The use of "rcu_assign_pointer()" is NULLing out the pointer. According to RCU_INIT_POINTER()'s block comment: "1. This use of RCU_INIT_POINTER() is NULLing out the pointer" it is better to use it instead of rcu_assign_pointer() because it has a smaller overhead. The following Coccinelle semantic patch was used: @@ @@ - rcu_assign_pointer + RCU_INIT_POINTER (..., NULL) Signed-off-by: Andreea-Cristina Bernat --- drivers/target/tcm_fc/tfc_sess.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/target/tcm_fc/tfc_sess.c b/drivers/target/tcm_fc/tfc_sess.c index 21ce508..ccee7e3 100644 --- a/drivers/target/tcm_fc/tfc_sess.c +++ b/drivers/target/tcm_fc/tfc_sess.c @@ -98,7 +98,7 @@ static void ft_tport_delete(struct ft_tport *tport) ft_sess_delete_all(tport); lport = tport->lport; BUG_ON(tport != lport->prov[FC_TYPE_FCP]); - rcu_assign_pointer(lport->prov[FC_TYPE_FCP], NULL); + RCU_INIT_POINTER(lport->prov[FC_TYPE_FCP], NULL); tpg = tport->tpg; if (tpg) { -- 1.9.1