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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/fs/dlm/lock.h
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/******************************************************************************

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*******************************************************************************

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**

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**  Copyright (C) 2005-2007 Red Hat, Inc.  All rights reserved.

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**

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**  This copyrighted material is made available to anyone wishing to use,

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**  modify, copy, or redistribute it subject to the terms and conditions

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**  of the GNU General Public License v.2.

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**

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*******************************************************************************

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******************************************************************************/

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#ifndef __LOCK_DOT_H__

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#define __LOCK_DOT_H__

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void dlm_dump_rsb(struct dlm_rsb *r);

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void dlm_print_lkb(struct dlm_lkb *lkb);

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void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms);

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void dlm_receive_buffer(union dlm_packet *p, int nodeid);

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int dlm_modes_compat(int mode1, int mode2);

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void dlm_put_rsb(struct dlm_rsb *r);

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void dlm_hold_rsb(struct dlm_rsb *r);

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int dlm_put_lkb(struct dlm_lkb *lkb);

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void dlm_scan_rsbs(struct dlm_ls *ls);

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int dlm_lock_recovery_try(struct dlm_ls *ls);

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void dlm_unlock_recovery(struct dlm_ls *ls);

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void dlm_scan_waiters(struct dlm_ls *ls);

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void dlm_scan_timeout(struct dlm_ls *ls);

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void dlm_adjust_timeouts(struct dlm_ls *ls);

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int dlm_purge_locks(struct dlm_ls *ls);

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void dlm_purge_mstcpy_locks(struct dlm_rsb *r);

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void dlm_grant_after_purge(struct dlm_ls *ls);

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int dlm_recover_waiters_post(struct dlm_ls *ls);

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void dlm_recover_waiters_pre(struct dlm_ls *ls);

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int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);

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int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);

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int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode,

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	uint32_t flags, void *name, unsigned int namelen,

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	unsigned long timeout_cs);

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int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,

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	int mode, uint32_t flags, uint32_t lkid, char *lvb_in,

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	unsigned long timeout_cs);

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int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,

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	uint32_t flags, uint32_t lkid, char *lvb_in);

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int dlm_user_cancel(struct dlm_ls *ls,  struct dlm_user_args *ua_tmp,

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	uint32_t flags, uint32_t lkid);

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int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,

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	int nodeid, int pid);

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int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid);

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void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);

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static inline int is_master(struct dlm_rsb *r)

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{

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	return !r->res_nodeid;

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}

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static inline void lock_rsb(struct dlm_rsb *r)

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{

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	mutex_lock(&r->res_mutex);

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}

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static inline void unlock_rsb(struct dlm_rsb *r)

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{

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	mutex_unlock(&r->res_mutex);

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}

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#endif

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