lock.c File Reference

#include <linux/types.h>
#include <linux/rbtree.h>
#include <linux/slab.h>
#include "dlm_internal.h"
#include <linux/dlm_device.h>
#include "memory.h"
#include "lowcomms.h"
#include "requestqueue.h"
#include "util.h"
#include "dir.h"
#include "member.h"
#include "lockspace.h"
#include "ast.h"
#include "lock.h"
#include "rcom.h"
#include "recover.h"
#include "lvb_table.h"
#include "user.h"
#include "config.h"

Go to the source code of this file.

Macros
#define	modes_compat(gr, rq)   __dlm_compat_matrix[(gr)->lkb_grmode + 1][(rq)->lkb_rqmode + 1]

Functions
int	dlm_modes_compat (int mode1, int mode2)
void	dlm_print_lkb (struct dlm_lkb *lkb)
void	dlm_dump_rsb (struct dlm_rsb *r)
void	dlm_unlock_recovery (struct dlm_ls *ls)
int	dlm_lock_recovery_try (struct dlm_ls *ls)
void	dlm_hold_rsb (struct dlm_rsb *r)
void	dlm_put_rsb (struct dlm_rsb *r)
int	dlm_search_rsb_tree (struct rb_root *tree, char *name, int len, struct dlm_rsb **r_ret)
int	dlm_master_lookup (struct dlm_ls *ls, int from_nodeid, char *name, int len, unsigned int flags, int *r_nodeid, int *result)
void	dlm_dump_rsb_name (struct dlm_ls *ls, char *name, int len)
int	dlm_put_lkb (struct dlm_lkb *lkb)
void	dlm_scan_waiters (struct dlm_ls *ls)
void	dlm_scan_rsbs (struct dlm_ls *ls)
void	dlm_scan_timeout (struct dlm_ls *ls)
void	dlm_adjust_timeouts (struct dlm_ls *ls)
int	dlm_lock (dlm_lockspace_t *lockspace, int mode, struct dlm_lksb *lksb, uint32_t flags, void *name, unsigned int namelen, uint32_t parent_lkid, void(*ast)(void *astarg), void *astarg, void(*bast)(void *astarg, int mode))
int	dlm_unlock (dlm_lockspace_t *lockspace, uint32_t lkid, uint32_t flags, struct dlm_lksb *lksb, void *astarg)
void	dlm_receive_message_saved (struct dlm_ls *ls, struct dlm_message *ms, uint32_t saved_seq)
void	dlm_receive_buffer (union dlm_packet *p, int nodeid)
void	dlm_recover_waiters_pre (struct dlm_ls *ls)
int	dlm_recover_waiters_post (struct dlm_ls *ls)
void	dlm_purge_mstcpy_locks (struct dlm_rsb *r)
void	dlm_recover_purge (struct dlm_ls *ls)
void	dlm_recover_grant (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_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)
int	dlm_user_purge (struct dlm_ls *ls, struct dlm_user_proc *proc, int nodeid, int pid)

Variables
const int	dlm_lvb_operations [8][8]

Macro Definition Documentation

#define modes_compat	(		gr,
			rq
	)		__dlm_compat_matrix[(gr)->lkb_grmode + 1][(rq)->lkb_rqmode + 1]

Definition at line 136 of file lock.c.

Function Documentation

void dlm_adjust_timeouts

(

struct dlm_ls *

ls

)

Definition at line 1914 of file lock.c.

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

Definition at line 6079 of file lock.c.

void dlm_dump_rsb

(

struct dlm_rsb *

r

)

Definition at line 181 of file lock.c.

void dlm_dump_rsb_name	(	struct dlm_ls *	ls,
		char *	name,
		int	len
	)

Definition at line 1102 of file lock.c.

void dlm_hold_rsb

(

struct dlm_rsb *

r

)

Definition at line 341 of file lock.c.

int dlm_lock	(	dlm_lockspace_t *	lockspace,
		int	mode,
		struct dlm_lksb *	lksb,
		uint32_t	flags,
		void *	name,
		unsigned int	namelen,
		uint32_t	parent_lkid,
		void(*)(void *astarg)	ast,
		void *	astarg,
		void(*)(void *astarg, int mode)	bast
	)

Definition at line 3399 of file lock.c.

int dlm_lock_recovery_try

(

struct dlm_ls *

ls

)

Definition at line 215 of file lock.c.

int dlm_master_lookup	(	struct dlm_ls *	ls,
		int	from_nodeid,
		char *	name,
		int	len,
		unsigned int	flags,
		int *	r_nodeid,
		int *	result
	)

Definition at line 911 of file lock.c.

int dlm_modes_compat	(	int	mode1,
		int	mode2
	)

Definition at line 139 of file lock.c.

void dlm_print_lkb

(

struct dlm_lkb *

lkb

)

Definition at line 162 of file lock.c.

void dlm_purge_mstcpy_locks

(

struct dlm_rsb *

r

)

Definition at line 5374 of file lock.c.

int dlm_put_lkb

(

struct dlm_lkb *

lkb

)

Definition at line 1273 of file lock.c.

void dlm_put_rsb

(

struct dlm_rsb *

r

)

Definition at line 359 of file lock.c.

void dlm_receive_buffer	(	union dlm_packet *	p,
		int	nodeid
	)

Definition at line 5008 of file lock.c.

void dlm_receive_message_saved	(	struct dlm_ls *	ls,
		struct dlm_message *	ms,
		uint32_t	saved_seq
	)

Definition at line 4997 of file lock.c.

void dlm_recover_grant

(

struct dlm_ls *

ls

)

Definition at line 5493 of file lock.c.

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

Definition at line 5608 of file lock.c.

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

Definition at line 5689 of file lock.c.

void dlm_recover_purge

(

struct dlm_ls *

ls

)

Definition at line 5411 of file lock.c.

int dlm_recover_waiters_post

(

struct dlm_ls *

ls

)

Definition at line 5255 of file lock.c.

void dlm_recover_waiters_pre

(

struct dlm_ls *

ls

)

Definition at line 5106 of file lock.c.

void dlm_scan_rsbs

(

struct dlm_ls *

ls

)

Definition at line 1793 of file lock.c.

void dlm_scan_timeout

(

struct dlm_ls *

ls

)

Definition at line 1847 of file lock.c.

void dlm_scan_waiters

(

struct dlm_ls *

ls

)

Definition at line 1399 of file lock.c.

int dlm_search_rsb_tree	(	struct rb_root *	tree,
		char *	name,
		int	len,
		struct dlm_rsb **	r_ret
	)

Definition at line 447 of file lock.c.

int dlm_unlock	(	dlm_lockspace_t *	lockspace,
		uint32_t	lkid,
		uint32_t	flags,
		struct dlm_lksb *	lksb,
		void *	astarg
	)

Definition at line 3452 of file lock.c.

void dlm_unlock_recovery

(

struct dlm_ls *

ls

)

Definition at line 210 of file lock.c.

int dlm_user_cancel	(	struct dlm_ls *	ls,
		struct dlm_user_args *	ua_tmp,
		uint32_t	flags,
		uint32_t	lkid
	)

Definition at line 5921 of file lock.c.

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
	)

Definition at line 5818 of file lock.c.

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

Definition at line 5959 of file lock.c.

int dlm_user_purge	(	struct dlm_ls *	ls,
		struct dlm_user_proc *	proc,
		int	nodeid,
		int	pid
	)

Definition at line 6195 of file lock.c.

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
	)

Definition at line 5753 of file lock.c.

int dlm_user_unlock	(	struct dlm_ls *	ls,
		struct dlm_user_args *	ua_tmp,
		uint32_t	flags,
		uint32_t	lkid,
		char *	lvb_in
	)

Definition at line 5872 of file lock.c.

Variable Documentation

const int dlm_lvb_operations[8][8]

Initial value:

= {
        
        {  -1,  1,  1,  1,  1,  1,  1, -1 }, 
        {  -1,  1,  1,  1,  1,  1,  1,  0 }, 
        {  -1, -1,  1,  1,  1,  1,  1,  0 }, 
        {  -1, -1, -1,  1,  1,  1,  1,  0 }, 
        {  -1, -1, -1, -1,  1,  1,  1,  0 }, 
        {  -1,  0,  0,  0,  0,  0,  1,  0 }, 
        {  -1,  0,  0,  0,  0,  0,  0,  0 }, 
        {  -1,  0,  0,  0,  0,  0,  0,  0 }  
}

Definition at line 124 of file lock.c.