From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1424971AbdEYSvm (ORCPT ); Thu, 25 May 2017 14:51:42 -0400 Received: from mail-wm0-f66.google.com ([74.125.82.66]:35422 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1424953AbdEYSvh (ORCPT ); Thu, 25 May 2017 14:51:37 -0400 From: Manfred Spraul To: mtk.manpages@gmail.com, Andrew Morton , Kees Cook Cc: LKML , 1vier1@web.de, Davidlohr Bueso , mingo@kernel.org, peterz@infradead.org, fabf@skynet.be, Manfred Spraul Subject: [PATCH 18/20] ipc/msg: Remove special msg_alloc/free Date: Thu, 25 May 2017 20:51:05 +0200 Message-Id: <20170525185107.12869-19-manfred@colorfullife.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170525185107.12869-1-manfred@colorfullife.com> References: <20170508222345.GA52073@beast> <20170525185107.12869-1-manfred@colorfullife.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kees Cook There is nothing special about the msg_alloc/free routines any more, so remove them to make code more readable. Signed-off-by: Kees Cook [manfred@colorfullife.com: Rediff to keep rcu protection for security_msg_queue_alloc()] Signed-off-by: Manfred Spraul --- ipc/msg.c | 24 ++++-------------------- 1 file changed, 4 insertions(+), 20 deletions(-) diff --git a/ipc/msg.c b/ipc/msg.c index 770342e..5b25e07 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -95,29 +95,13 @@ static inline void msg_rmid(struct ipc_namespace *ns, struct msg_queue *s) ipc_rmid(&msg_ids(ns), &s->q_perm); } -static void __msg_free(struct msg_queue *msq) -{ - kvfree(msq); -} - static void msg_rcu_free(struct rcu_head *head) { struct kern_ipc_perm *p = container_of(head, struct kern_ipc_perm, rcu); struct msg_queue *msq = container_of(p, struct msg_queue, q_perm); security_msg_queue_free(msq); - __msg_free(msq); -} - -static struct msg_queue *msg_alloc(void) -{ - struct msg_queue *msq; - - msq = kvmalloc(sizeof(*msq), GFP_KERNEL); - if (unlikely(!msq)) - return NULL; - - return msq; + kvfree(msq); } /** @@ -134,8 +118,8 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params) key_t key = params->key; int msgflg = params->flg; - msq = msg_alloc(); - if (!msq) + msq = kvmalloc(sizeof(*msq), GFP_KERNEL); + if (unlikely(!msq)) return -ENOMEM; msq->q_perm.mode = msgflg & S_IRWXUGO; @@ -144,7 +128,7 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params) msq->q_perm.security = NULL; retval = security_msg_queue_alloc(msq); if (retval) { - __msg_free(msq); + kvfree(msq); return retval; } -- 2.9.3