67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
|
/* -*- mode: c; c-basic-offset: 8; -*-
|
||
|
|
* vim: noexpandtab sw=8 ts=8 sts=0:
|
||
|
|
*
|
||
|
|
* slotmap.h
|
||
|
|
*
|
||
|
|
* description here
|
||
|
|
*
|
||
|
|
* Copyright (C) 2002, 2004 Oracle. All rights reserved.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public
|
||
|
|
* License as published by the Free Software Foundation; either
|
||
|
|
* version 2 of the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
* General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public
|
||
|
|
* License along with this program; if not, write to the
|
||
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||
|
|
* Boston, MA 021110-1307, USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef SLOTMAP_H
|
||
|
|
#define SLOTMAP_H
|
||
|
|
|
||
|
|
struct ocfs2_slot_info {
|
||
|
|
spinlock_t si_lock;
|
||
|
|
|
||
|
|
struct inode *si_inode;
|
||
|
|
struct buffer_head *si_bh;
|
||
|
|
unsigned int si_num_slots;
|
||
|
|
unsigned int si_size;
|
||
|
|
s16 si_global_node_nums[OCFS2_MAX_SLOTS];
|
||
|
|
};
|
||
|
|
|
||
|
|
int ocfs2_init_slot_info(struct ocfs2_super *osb);
|
||
|
|
void ocfs2_free_slot_info(struct ocfs2_slot_info *si);
|
||
|
|
|
||
|
|
int ocfs2_find_slot(struct ocfs2_super *osb);
|
||
|
|
void ocfs2_put_slot(struct ocfs2_super *osb);
|
||
|
|
|
||
|
|
void ocfs2_update_slot_info(struct ocfs2_slot_info *si);
|
||
|
|
int ocfs2_update_disk_slots(struct ocfs2_super *osb,
|
||
|
|
struct ocfs2_slot_info *si);
|
||
|
|
|
||
|
|
s16 ocfs2_node_num_to_slot(struct ocfs2_slot_info *si,
|
||
|
|
s16 global);
|
||
|
|
void ocfs2_clear_slot(struct ocfs2_slot_info *si,
|
||
|
|
s16 slot_num);
|
||
|
|
|
||
|
|
void ocfs2_populate_mounted_map(struct ocfs2_super *osb);
|
||
|
|
|
||
|
|
static inline int ocfs2_is_empty_slot(struct ocfs2_slot_info *si,
|
||
|
|
int slot_num)
|
||
|
|
{
|
||
|
|
BUG_ON(slot_num == OCFS2_INVALID_SLOT);
|
||
|
|
assert_spin_locked(&si->si_lock);
|
||
|
|
|
||
|
|
return si->si_global_node_nums[slot_num] == OCFS2_INVALID_SLOT;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|