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/*
* Copyright (c) 2000,2005 Silicon Graphics, Inc.
* 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.
*
* This program is distributed in the hope that it would 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 the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_LOG_RECOVER_H__
#define __XFS_LOG_RECOVER_H__
/*
* Macros, structures, prototypes for internal log manager use.
*/
#define XLOG_RHASH_BITS 4
#define XLOG_RHASH_SIZE 16
#define XLOG_RHASH_SHIFT 2
#define XLOG_RHASH(tid) \
((((__uint32_t)tid)>>XLOG_RHASH_SHIFT) & (XLOG_RHASH_SIZE-1))
#define XLOG_MAX_REGIONS_IN_ITEM (XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK / 2 + 1)
/*
* item headers are in ri_buf[0]. Additional buffers follow.
*/
typedef struct xlog_recover_item {
struct list_head ri_list;
int ri_type;
int ri_cnt; /* count of regions found */
int ri_total; /* total regions */
xfs_log_iovec_t *ri_buf; /* ptr to regions buffer */
} xlog_recover_item_t;
struct xlog_tid;
typedef struct xlog_recover {
struct hlist_node r_list;
xlog_tid_t r_log_tid; /* log's transaction id */
xfs_trans_header_t r_theader; /* trans header for partial */
int r_state; /* not needed */
xfs_lsn_t r_lsn; /* xact lsn */
struct list_head r_itemq; /* q for items */
} xlog_recover_t;
#define ITEM_TYPE(i) (*(unsigned short *)(i)->ri_buf[0].i_addr)
/*
* This is the number of entries in the l_buf_cancel_table used during
* recovery.
*/
#define XLOG_BC_TABLE_SIZE 64
#define XLOG_RECOVER_CRCPASS 0
#define XLOG_RECOVER_PASS1 1
#define XLOG_RECOVER_PASS2 2
#endif /* __XFS_LOG_RECOVER_H__ */
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