2 * Copyright (C) 2005-2011 Junjiro R. Okajima
4 * This program, aufs is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * simple list protected by a spinlock
23 #ifndef __AUFS_SPL_H__
24 #define __AUFS_SPL_H__
28 #include <linux/spinlock.h>
29 #include <linux/list.h>
30 #include <linux/rculist.h>
34 struct list_head head;
37 static inline void au_spl_init(struct au_splhead *spl)
39 spin_lock_init(&spl->spin);
40 INIT_LIST_HEAD(&spl->head);
43 static inline void au_spl_add(struct list_head *list, struct au_splhead *spl)
45 spin_lock(&spl->spin);
46 list_add(list, &spl->head);
47 spin_unlock(&spl->spin);
50 static inline void au_spl_del(struct list_head *list, struct au_splhead *spl)
52 spin_lock(&spl->spin);
54 spin_unlock(&spl->spin);
57 static inline void au_spl_del_rcu(struct list_head *list,
58 struct au_splhead *spl)
60 spin_lock(&spl->spin);
62 spin_unlock(&spl->spin);
65 #endif /* __KERNEL__ */
66 #endif /* __AUFS_SPL_H__ */