8b4021fa43
Add a function that can be used through libdlm by a system daemon to cancel another process's deadlocked lock. A completion ast with EDEADLK is returned to the process waiting for the lock. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
/******************************************************************************
|
|
*******************************************************************************
|
|
**
|
|
** Copyright (C) 2005-2007 Red Hat, Inc. All rights reserved.
|
|
**
|
|
** This copyrighted material is made available to anyone wishing to use,
|
|
** modify, copy, or redistribute it subject to the terms and conditions
|
|
** of the GNU General Public License v.2.
|
|
**
|
|
*******************************************************************************
|
|
******************************************************************************/
|
|
|
|
#ifndef __LOCK_DOT_H__
|
|
#define __LOCK_DOT_H__
|
|
|
|
void dlm_print_rsb(struct dlm_rsb *r);
|
|
void dlm_dump_rsb(struct dlm_rsb *r);
|
|
void dlm_print_lkb(struct dlm_lkb *lkb);
|
|
int dlm_receive_message(struct dlm_header *hd, int nodeid, int recovery);
|
|
int dlm_modes_compat(int mode1, int mode2);
|
|
int dlm_find_rsb(struct dlm_ls *ls, char *name, int namelen,
|
|
unsigned int flags, struct dlm_rsb **r_ret);
|
|
void dlm_put_rsb(struct dlm_rsb *r);
|
|
void dlm_hold_rsb(struct dlm_rsb *r);
|
|
int dlm_put_lkb(struct dlm_lkb *lkb);
|
|
void dlm_scan_rsbs(struct dlm_ls *ls);
|
|
int dlm_lock_recovery_try(struct dlm_ls *ls);
|
|
void dlm_unlock_recovery(struct dlm_ls *ls);
|
|
void dlm_scan_timeout(struct dlm_ls *ls);
|
|
void dlm_adjust_timeouts(struct dlm_ls *ls);
|
|
|
|
int dlm_purge_locks(struct dlm_ls *ls);
|
|
void dlm_purge_mstcpy_locks(struct dlm_rsb *r);
|
|
void dlm_grant_after_purge(struct dlm_ls *ls);
|
|
int dlm_recover_waiters_post(struct dlm_ls *ls);
|
|
void dlm_recover_waiters_pre(struct dlm_ls *ls);
|
|
int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
|
|
int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
|
|
|
|
int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode,
|
|
uint32_t flags, void *name, unsigned int namelen,
|
|
unsigned long timeout_cs);
|
|
int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
|
|
int mode, uint32_t flags, uint32_t lkid, char *lvb_in,
|
|
unsigned long timeout_cs);
|
|
int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
|
|
uint32_t flags, uint32_t lkid, char *lvb_in);
|
|
int dlm_user_cancel(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
|
|
uint32_t flags, uint32_t lkid);
|
|
int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
|
|
int nodeid, int pid);
|
|
int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid);
|
|
void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
|
|
|
|
static inline int is_master(struct dlm_rsb *r)
|
|
{
|
|
return !r->res_nodeid;
|
|
}
|
|
|
|
static inline void lock_rsb(struct dlm_rsb *r)
|
|
{
|
|
mutex_lock(&r->res_mutex);
|
|
}
|
|
|
|
static inline void unlock_rsb(struct dlm_rsb *r)
|
|
{
|
|
mutex_unlock(&r->res_mutex);
|
|
}
|
|
|
|
#endif
|
|
|