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gerrit-public.fairphone.software / fp2-dev / kernel / msm / 9e6849368b32cacc70fac02e2573db4731bac09b / . / fs / dlm / lock.h
blob: 1a255307f6ff68bd1279d6ddc14c851899e1bb02 [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 Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]17void dlm_print_lkb(struct dlm_lkb *lkb);
David Teiglandc36258b2007-09-27 15:53:38 -0500[diff] [blame]18void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms);
Al Viroeef7d732008-01-25 00:58:46 -0500[diff] [blame]19void dlm_receive_buffer(union dlm_packet *p, int nodeid);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]20int dlm_modes_compat(int mode1, int mode2);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]21void dlm_put_rsb(struct dlm_rsb *r);
22void dlm_hold_rsb(struct dlm_rsb *r);
23int dlm_put_lkb(struct dlm_lkb *lkb);
24void dlm_scan_rsbs(struct dlm_ls *ls);
David Teigland85e86ed2007-05-18 08:58:15 -0500[diff] [blame]25int dlm_lock_recovery_try(struct dlm_ls *ls);
26void dlm_unlock_recovery(struct dlm_ls *ls);
David Teiglandc6ff6692011-03-28 14:17:26 -0500[diff] [blame]27void dlm_scan_waiters(struct dlm_ls *ls);
David Teigland3ae1acf2007-05-18 08:59:31 -0500[diff] [blame]28void dlm_scan_timeout(struct dlm_ls *ls);
29void dlm_adjust_timeouts(struct dlm_ls *ls);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]30
David Teigland7210cb72012-03-08 12:37:12 -0600[diff] [blame]31int dlm_search_rsb_tree(struct rb_root *tree, char *name, int len,
32 unsigned int flags, struct dlm_rsb **r_ret);
33
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]34int dlm_purge_locks(struct dlm_ls *ls);
35void dlm_purge_mstcpy_locks(struct dlm_rsb *r);
David Teigland97a35d12006-05-02 13:34:03 -0400[diff] [blame]36void dlm_grant_after_purge(struct dlm_ls *ls);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]37int dlm_recover_waiters_post(struct dlm_ls *ls);
38void dlm_recover_waiters_pre(struct dlm_ls *ls);
39int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
40int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
41
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]42int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode,
David Teiglandd7db9232007-05-18 09:00:32 -0500[diff] [blame]43 uint32_t flags, void *name, unsigned int namelen,
44 unsigned long timeout_cs);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]45int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
David Teiglandd7db9232007-05-18 09:00:32 -0500[diff] [blame]46 int mode, uint32_t flags, uint32_t lkid, char *lvb_in,
47 unsigned long timeout_cs);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]48int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
49 uint32_t flags, uint32_t lkid, char *lvb_in);
50int dlm_user_cancel(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
51 uint32_t flags, uint32_t lkid);
David Teigland72c2be72007-03-30 15:06:16 -0500[diff] [blame]52int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
53 int nodeid, int pid);
David Teigland8b4021f2007-05-29 08:46:00 -0500[diff] [blame]54int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]55void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
56
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]57static inline int is_master(struct dlm_rsb *r)
58{
59 return !r->res_nodeid;
60}
61
62static inline void lock_rsb(struct dlm_rsb *r)
63{
David Teigland90135922006-01-20 08:47:07 +0000[diff] [blame]64 mutex_lock(&r->res_mutex);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]65}
66
67static inline void unlock_rsb(struct dlm_rsb *r)
68{
David Teigland90135922006-01-20 08:47:07 +0000[diff] [blame]69 mutex_unlock(&r->res_mutex);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]70}
71
72#endif
73