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gerrit-public.fairphone.software / kernel / msm-4.9 / dd53e1b0ed82ba72b2e9f11ae9c3d38bb82113cc / . / fs / dlm / lock.h
blob: 5e0c72e36a9b3acd7cbd125da1399a75356ee596 [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
David Teiglanda345da32006-08-18 11:54:25 -0500[diff] [blame]16void dlm_dump_rsb(struct dlm_rsb *r);
David Teiglandc04fecb2012-05-10 10:18:07 -0500[diff] [blame]17void dlm_dump_rsb_name(struct dlm_ls *ls, char *name, int len);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]18void dlm_print_lkb(struct dlm_lkb *lkb);
David Teigland6d40c4a2012-04-23 16:36:01 -0500[diff] [blame]19void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms,
20 uint32_t saved_seq);
Al Viroeef7d732008-01-25 00:58:46 -0500[diff] [blame]21void dlm_receive_buffer(union dlm_packet *p, int nodeid);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]22int dlm_modes_compat(int mode1, int mode2);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]23void dlm_put_rsb(struct dlm_rsb *r);
24void dlm_hold_rsb(struct dlm_rsb *r);
25int dlm_put_lkb(struct dlm_lkb *lkb);
26void dlm_scan_rsbs(struct dlm_ls *ls);
David Teigland85e86ed2007-05-18 08:58:15 -0500[diff] [blame]27int dlm_lock_recovery_try(struct dlm_ls *ls);
28void dlm_unlock_recovery(struct dlm_ls *ls);
David Teiglandc6ff6692011-03-28 14:17:26 -0500[diff] [blame]29void dlm_scan_waiters(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 Teiglandc04fecb2012-05-10 10:18:07 -0500[diff] [blame]32int dlm_master_lookup(struct dlm_ls *ls, int nodeid, char *name, int len,
33 unsigned int flags, int *r_nodeid, int *result);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]34
David Teigland7210cb72012-03-08 12:37:12 -0600[diff] [blame]35int dlm_search_rsb_tree(struct rb_root *tree, char *name, int len,
David Teiglandc04fecb2012-05-10 10:18:07 -0500[diff] [blame]36 struct dlm_rsb **r_ret);
David Teigland7210cb72012-03-08 12:37:12 -0600[diff] [blame]37
David Teigland48756472012-04-26 15:54:29 -0500[diff] [blame]38void dlm_recover_purge(struct dlm_ls *ls);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]39void dlm_purge_mstcpy_locks(struct dlm_rsb *r);
David Teigland48756472012-04-26 15:54:29 -0500[diff] [blame]40void dlm_recover_grant(struct dlm_ls *ls);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]41int dlm_recover_waiters_post(struct dlm_ls *ls);
42void dlm_recover_waiters_pre(struct dlm_ls *ls);
43int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
44int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
45
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]46int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode,
David Teiglandd7db9232007-05-18 09:00:32 -0500[diff] [blame]47 uint32_t flags, void *name, unsigned int namelen,
48 unsigned long timeout_cs);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]49int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
David Teiglandd7db9232007-05-18 09:00:32 -0500[diff] [blame]50 int mode, uint32_t flags, uint32_t lkid, char *lvb_in,
51 unsigned long timeout_cs);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]52int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
53 uint32_t flags, uint32_t lkid, char *lvb_in);
54int dlm_user_cancel(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
55 uint32_t flags, uint32_t lkid);
David Teigland72c2be72007-03-30 15:06:16 -0500[diff] [blame]56int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
57 int nodeid, int pid);
David Teigland8b4021f2007-05-29 08:46:00 -0500[diff] [blame]58int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]59void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
60
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]61static inline int is_master(struct dlm_rsb *r)
62{
63 return !r->res_nodeid;
64}
65
66static inline void lock_rsb(struct dlm_rsb *r)
67{
David Teigland90135922006-01-20 08:47:07 +0000[diff] [blame]68 mutex_lock(&r->res_mutex);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]69}
70
71static inline void unlock_rsb(struct dlm_rsb *r)
72{
David Teigland90135922006-01-20 08:47:07 +0000[diff] [blame]73 mutex_unlock(&r->res_mutex);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]74}
75
76#endif
77