xref: /openbmc/linux/fs/dlm/lock.h (revision e868d61272caa648214046a096e5a6bfc068dc8c)
1 /******************************************************************************
2 *******************************************************************************
3 **
4 **  Copyright (C) 2005 Red Hat, Inc.  All rights reserved.
5 **
6 **  This copyrighted material is made available to anyone wishing to use,
7 **  modify, copy, or redistribute it subject to the terms and conditions
8 **  of the GNU General Public License v.2.
9 **
10 *******************************************************************************
11 ******************************************************************************/
12 
13 #ifndef __LOCK_DOT_H__
14 #define __LOCK_DOT_H__
15 
16 void dlm_print_rsb(struct dlm_rsb *r);
17 void dlm_dump_rsb(struct dlm_rsb *r);
18 void dlm_print_lkb(struct dlm_lkb *lkb);
19 int dlm_receive_message(struct dlm_header *hd, int nodeid, int recovery);
20 int dlm_modes_compat(int mode1, int mode2);
21 int dlm_find_rsb(struct dlm_ls *ls, char *name, int namelen,
22 	unsigned int flags, struct dlm_rsb **r_ret);
23 void dlm_put_rsb(struct dlm_rsb *r);
24 void dlm_hold_rsb(struct dlm_rsb *r);
25 int dlm_put_lkb(struct dlm_lkb *lkb);
26 void dlm_scan_rsbs(struct dlm_ls *ls);
27 
28 int dlm_purge_locks(struct dlm_ls *ls);
29 void dlm_purge_mstcpy_locks(struct dlm_rsb *r);
30 void dlm_grant_after_purge(struct dlm_ls *ls);
31 int dlm_recover_waiters_post(struct dlm_ls *ls);
32 void dlm_recover_waiters_pre(struct dlm_ls *ls);
33 int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
34 int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
35 
36 int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode,
37 	uint32_t flags, void *name, unsigned int namelen, uint32_t parent_lkid);
38 int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
39 	int mode, uint32_t flags, uint32_t lkid, char *lvb_in);
40 int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
41 	uint32_t flags, uint32_t lkid, char *lvb_in);
42 int dlm_user_cancel(struct dlm_ls *ls,  struct dlm_user_args *ua_tmp,
43 	uint32_t flags, uint32_t lkid);
44 int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
45 	int nodeid, int pid);
46 void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
47 
48 static inline int is_master(struct dlm_rsb *r)
49 {
50 	return !r->res_nodeid;
51 }
52 
53 static inline void lock_rsb(struct dlm_rsb *r)
54 {
55 	mutex_lock(&r->res_mutex);
56 }
57 
58 static inline void unlock_rsb(struct dlm_rsb *r)
59 {
60 	mutex_unlock(&r->res_mutex);
61 }
62 
63 #endif
64 
65