Gitiles
Code Review Sign In
review.shift-gmbh.com / SHIFTPHONES / mainline / linux / f289d990450cfa16869b9ff670e611e5df51f1d9 / . / fs / dlm / lock.h
blob: 456c6ec3ef6f43401d5fd776e806221270564ab2 [file] [log] [blame]
Thomas Gleixner2522fe42019-05-28 09:57:20 -0700[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0-only */
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]2/******************************************************************************
3*******************************************************************************
4**
David Teigland3ae1acf2007-05-18 08:59:31 -0500[diff] [blame]5** Copyright (C) 2005-2007 Red Hat, Inc. All rights reserved.
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]6**
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]7**
8*******************************************************************************
9******************************************************************************/
10
11#ifndef __LOCK_DOT_H__
12#define __LOCK_DOT_H__
13
David Teiglanda345da32006-08-18 11:54:25 -0500[diff] [blame]14void dlm_dump_rsb(struct dlm_rsb *r);
David Teiglandc04fecb2012-05-10 10:18:07 -0500[diff] [blame]15void dlm_dump_rsb_name(struct dlm_ls *ls, char *name, int len);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]16void dlm_print_lkb(struct dlm_lkb *lkb);
David Teigland6d40c4a2012-04-23 16:36:01 -0500[diff] [blame]17void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms,
18 uint32_t saved_seq);
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 Teiglandc04fecb2012-05-10 10:18:07 -0500[diff] [blame]30int dlm_master_lookup(struct dlm_ls *ls, int nodeid, char *name, int len,
31 unsigned int flags, int *r_nodeid, int *result);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]32
David Teigland7210cb72012-03-08 12:37:12 -0600[diff] [blame]33int dlm_search_rsb_tree(struct rb_root *tree, char *name, int len,
David Teiglandc04fecb2012-05-10 10:18:07 -0500[diff] [blame]34 struct dlm_rsb **r_ret);
David Teigland7210cb72012-03-08 12:37:12 -0600[diff] [blame]35
David Teigland48756472012-04-26 15:54:29 -0500[diff] [blame]36void dlm_recover_purge(struct dlm_ls *ls);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]37void dlm_purge_mstcpy_locks(struct dlm_rsb *r);
David Teigland48756472012-04-26 15:54:29 -0500[diff] [blame]38void dlm_recover_grant(struct dlm_ls *ls);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]39int dlm_recover_waiters_post(struct dlm_ls *ls);
40void dlm_recover_waiters_pre(struct dlm_ls *ls);
41int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
42int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
43
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]44int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode,
David Teiglandd7db9232007-05-18 09:00:32 -0500[diff] [blame]45 uint32_t flags, void *name, unsigned int namelen,
46 unsigned long timeout_cs);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]47int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
David Teiglandd7db9232007-05-18 09:00:32 -0500[diff] [blame]48 int mode, uint32_t flags, uint32_t lkid, char *lvb_in,
49 unsigned long timeout_cs);
David Teigland2ab4bd82014-10-17 11:05:50 -0500[diff] [blame]50int dlm_user_adopt_orphan(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
51 int mode, uint32_t flags, void *name, unsigned int namelen,
52 unsigned long timeout_cs, uint32_t *lkid);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]53int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
54 uint32_t flags, uint32_t lkid, char *lvb_in);
55int dlm_user_cancel(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
56 uint32_t flags, uint32_t lkid);
David Teigland72c2be72007-03-30 15:06:16 -0500[diff] [blame]57int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
58 int nodeid, int pid);
David Teigland8b4021f2007-05-29 08:46:00 -0500[diff] [blame]59int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid);
David Teigland597d0ca2006-07-12 16:44:04 -0500[diff] [blame]60void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
61
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]62static inline int is_master(struct dlm_rsb *r)
63{
64 return !r->res_nodeid;
65}
66
67static inline void lock_rsb(struct dlm_rsb *r)
68{
David Teigland90135922006-01-20 08:47:07 +0000[diff] [blame]69 mutex_lock(&r->res_mutex);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]70}
71
72static inline void unlock_rsb(struct dlm_rsb *r)
73{
David Teigland90135922006-01-20 08:47:07 +0000[diff] [blame]74 mutex_unlock(&r->res_mutex);
David Teiglande7fd4172006-01-18 09:30:29 +0000[diff] [blame]75}
76
77#endif
78