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gerrit-public.fairphone.software / kernel / msm-4.9 / dae5dbdbd786798ad2249e54df1156d524da30aa / . / fs / dlm / lock.h
blob: ada04680a1e5d9ff994aa82a35c899b6a975692b [file] [log] [blame]
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]1/******************************************************************************
2*******************************************************************************
3**
David Teigland3ae1acf2007-05-18 08:59:31 -0500[diff] [blame]4** Copyright (C) 2005-2007 Red Hat, Inc. All rights reserved.
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]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
16void dlm_print_rsb(struct dlm_rsb *r);
David Teiglanda345da32006-08-18 11:54:25 -0500[diff] [blame]17void dlm_dump_rsb(struct dlm_rsb *r);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]18void dlm_print_lkb(struct dlm_lkb *lkb);
David Teiglandc36258b2007-09-27 15:53:38 -0500[diff] [blame]19void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms);
20void dlm_receive_buffer(struct dlm_header *hd, int nodeid);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]21int dlm_modes_compat(int mode1, int mode2);
22int dlm_find_rsb(struct dlm_ls *ls, char *name, int namelen,
23 unsigned int flags, struct dlm_rsb **r_ret);
24void dlm_put_rsb(struct dlm_rsb *r);
25void dlm_hold_rsb(struct dlm_rsb *r);
26int dlm_put_lkb(struct dlm_lkb *lkb);
27void dlm_scan_rsbs(struct dlm_ls *ls);
David Teigland85e86ed2007-05-18 08:58:15 -0500[diff] [blame]28int dlm_lock_recovery_try(struct dlm_ls *ls);
29void dlm_unlock_recovery(struct dlm_ls *ls);
David Teigland3ae1acf2007-05-18 08:59:31 -0500[diff] [blame]30void dlm_scan_timeout(struct dlm_ls *ls);
31void dlm_adjust_timeouts(struct dlm_ls *ls);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]32
33int dlm_purge_locks(struct dlm_ls *ls);
34void dlm_purge_mstcpy_locks(struct dlm_rsb *r);
David Teigland97a35d12006-05-02 13:34:03 -0400[diff] [blame]35void dlm_grant_after_purge(struct dlm_ls *ls);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]36int dlm_recover_waiters_post(struct dlm_ls *ls);
37void dlm_recover_waiters_pre(struct dlm_ls *ls);
38int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
39int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
40
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]41int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode,
David Teiglandd7db9232007-05-18 09:00:32 -0500[diff] [blame]42 uint32_t flags, void *name, unsigned int namelen,
43 unsigned long timeout_cs);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]44int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
David Teiglandd7db9232007-05-18 09:00:32 -0500[diff] [blame]45 int mode, uint32_t flags, uint32_t lkid, char *lvb_in,
46 unsigned long timeout_cs);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]47int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
48 uint32_t flags, uint32_t lkid, char *lvb_in);
49int dlm_user_cancel(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
50 uint32_t flags, uint32_t lkid);
David Teigland72c2be72007-03-30 15:06:16 -0500[diff] [blame]51int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
52 int nodeid, int pid);
David Teigland8b4021f2007-05-29 08:46:00 -0500[diff] [blame]53int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]54void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
55
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]56static inline int is_master(struct dlm_rsb *r)
57{
58 return !r->res_nodeid;
59}
60
61static inline void lock_rsb(struct dlm_rsb *r)
62{
David Teigland90135922006-01-20 08:47:07 +0000[diff] [blame]63 mutex_lock(&r->res_mutex);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]64}
65
66static inline void unlock_rsb(struct dlm_rsb *r)
67{
David Teigland90135922006-01-20 08:47:07 +0000[diff] [blame]68 mutex_unlock(&r->res_mutex);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]69}
70
71#endif
72