From 693a8b6eecce1a0cfe91a469e85c56016dc1cc53 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Fri, 18 Mar 2011 12:09:35 +0800 Subject: [PATCH] ipc,rcu: Convert call_rcu(free_un) to kfree_rcu() The rcu callback free_un() just calls a kfree(), so we use kfree_rcu() instead of the call_rcu(free_un). Signed-off-by: Lai Jiangshan Signed-off-by: Paul E. McKenney Cc: Andrew Morton Cc: Manfred Spraul Reviewed-by: Josh Triplett --- ipc/sem.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/ipc/sem.c b/ipc/sem.c index 34193ed..8b929e6 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -689,12 +689,6 @@ static int count_semzcnt (struct sem_array * sma, ushort semnum) return semzcnt; } -static void free_un(struct rcu_head *head) -{ - struct sem_undo *un = container_of(head, struct sem_undo, rcu); - kfree(un); -} - /* Free a semaphore set. freeary() is called with sem_ids.rw_mutex locked * as a writer and the spinlock for this semaphore set hold. sem_ids.rw_mutex * remains locked on exit. @@ -714,7 +708,7 @@ static void freeary(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp) un->semid = -1; list_del_rcu(&un->list_proc); spin_unlock(&un->ulp->lock); - call_rcu(&un->rcu, free_un); + kfree_rcu(un, rcu); } /* Wake up all pending processes and let them fail with EIDRM. */ @@ -1612,7 +1606,7 @@ void exit_sem(struct task_struct *tsk) sem_unlock(sma); wake_up_sem_queue_do(&tasks); - call_rcu(&un->rcu, free_un); + kfree_rcu(un, rcu); } kfree(ulp); } -- 2.7.4