linux/fs/dlm/recoverd.c

// SPDX-License-Identifier: GPL-2.0-only
/******************************************************************************
*******************************************************************************
**
**  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
**  Copyright (C) 2004-2011 Red Hat, Inc.  All rights reserved.
**
**
*******************************************************************************
******************************************************************************/

#include "dlm_internal.h"
#include "lockspace.h"
#include "member.h"
#include "dir.h"
#include "ast.h"
#include "recover.h"
#include "lowcomms.h"
#include "lock.h"
#include "requestqueue.h"
#include "recoverd.h"

static int dlm_create_masters_list(struct dlm_ls *ls)
{ … }

static void dlm_release_masters_list(struct dlm_ls *ls)
{ … }

static void dlm_create_root_list(struct dlm_ls *ls, struct list_head *root_list)
{ … }

static void dlm_release_root_list(struct list_head *root_list)
{ … }

/* If the start for which we're re-enabling locking (seq) has been superseded
   by a newer stop (ls_recover_seq), we need to leave locking disabled.

   We suspend dlm_recv threads here to avoid the race where dlm_recv a) sees
   locking stopped and b) adds a message to the requestqueue, but dlm_recoverd
   enables locking and clears the requestqueue between a and b. */

static int enable_locking(struct dlm_ls *ls, uint64_t seq)
{ … }

static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv)
{ … }

/* The dlm_ls_start() that created the rv we take here may already have been
   stopped via dlm_ls_stop(); in that case we need to leave the RECOVERY_STOP
   flag set. */

static void do_ls_recovery(struct dlm_ls *ls)
{ … }

static int dlm_recoverd(void *arg)
{ … }

int dlm_recoverd_start(struct dlm_ls *ls)
{ … }

void dlm_recoverd_stop(struct dlm_ls *ls)
{ … }

void dlm_recoverd_suspend(struct dlm_ls *ls)
{ … }

void dlm_recoverd_resume(struct dlm_ls *ls)
{ … }