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/*
* Copyright (C) 2005-2012 Junjiro R. Okajima
*
* This program, aufs is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* simple list protected by a spinlock
*/
#ifndef __AUFS_SPL_H__
#define __AUFS_SPL_H__
#ifdef __KERNEL__
struct au_splhead {
spinlock_t spin;
struct list_head head;
};
static inline void au_spl_init(struct au_splhead *spl)
{
spin_lock_init(&spl->spin);
INIT_LIST_HEAD(&spl->head);
}
static inline void au_spl_add(struct list_head *list, struct au_splhead *spl)
{
spin_lock(&spl->spin);
list_add(list, &spl->head);
spin_unlock(&spl->spin);
}
static inline void au_spl_del(struct list_head *list, struct au_splhead *spl)
{
spin_lock(&spl->spin);
list_del(list);
spin_unlock(&spl->spin);
}
static inline void au_spl_del_rcu(struct list_head *list,
struct au_splhead *spl)
{
spin_lock(&spl->spin);
list_del_rcu(list);
spin_unlock(&spl->spin);
}
#endif /* __KERNEL__ */
#endif /* __AUFS_SPL_H__ */
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