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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - fs/aufs/spl.h
2 * Copyright (C) 2005-2016 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, see <http://www.gnu.org/licenses/>.
19 * simple list protected by a spinlock
22 #ifndef __AUFS_SPL_H__
23 #define __AUFS_SPL_H__
30 struct list_head head
;
33 static inline void au_spl_init(struct au_splhead
*spl
)
35 spin_lock_init(&spl
->spin
);
36 INIT_LIST_HEAD(&spl
->head
);
39 static inline void au_spl_add(struct list_head
*list
, struct au_splhead
*spl
)
41 spin_lock(&spl
->spin
);
42 list_add(list
, &spl
->head
);
43 spin_unlock(&spl
->spin
);
46 static inline void au_spl_del(struct list_head
*list
, struct au_splhead
*spl
)
48 spin_lock(&spl
->spin
);
50 spin_unlock(&spl
->spin
);
53 static inline void au_spl_del_rcu(struct list_head
*list
,
54 struct au_splhead
*spl
)
56 spin_lock(&spl
->spin
);
58 spin_unlock(&spl
->spin
);
62 /* ---------------------------------------------------------------------- */
66 struct hlist_head head
;
69 static inline void au_sphl_init(struct au_sphlhead
*sphl
)
71 spin_lock_init(&sphl
->spin
);
72 INIT_HLIST_HEAD(&sphl
->head
);
75 static inline void au_sphl_add(struct hlist_node
*hlist
,
76 struct au_sphlhead
*sphl
)
78 spin_lock(&sphl
->spin
);
79 hlist_add_head(hlist
, &sphl
->head
);
80 spin_unlock(&sphl
->spin
);
83 static inline void au_sphl_del(struct hlist_node
*hlist
,
84 struct au_sphlhead
*sphl
)
86 spin_lock(&sphl
->spin
);
88 spin_unlock(&sphl
->spin
);
91 static inline void au_sphl_del_rcu(struct hlist_node
*hlist
,
92 struct au_sphlhead
*sphl
)
94 spin_lock(&sphl
->spin
);
96 spin_unlock(&sphl
->spin
);
99 static inline unsigned long au_sphl_count(struct au_sphlhead
*sphl
)
102 struct hlist_node
*pos
;
105 spin_lock(&sphl
->spin
);
106 hlist_for_each(pos
, &sphl
->head
)
108 spin_unlock(&sphl
->spin
);
112 #endif /* __KERNEL__ */
113 #endif /* __AUFS_SPL_H__ */