2 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 #ifndef __XFS_LOG_RECOVER_H__
19 #define __XFS_LOG_RECOVER_H__
22 * Macros, structures, prototypes for internal log manager use.
25 #define XLOG_RHASH_BITS 4
26 #define XLOG_RHASH_SIZE 16
27 #define XLOG_RHASH_SHIFT 2
28 #define XLOG_RHASH(tid) \
29 ((((__uint32_t)tid)>>XLOG_RHASH_SHIFT) & (XLOG_RHASH_SIZE-1))
31 #define XLOG_MAX_REGIONS_IN_ITEM (XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK / 2 + 1)
35 * item headers are in ri_buf[0]. Additional buffers follow.
37 typedef struct xlog_recover_item {
38 struct xlog_recover_item *ri_next;
39 struct xlog_recover_item *ri_prev;
41 int ri_cnt; /* count of regions found */
42 int ri_total; /* total regions */
43 xfs_log_iovec_t *ri_buf; /* ptr to regions buffer */
44 } xlog_recover_item_t;
47 typedef struct xlog_recover {
48 struct xlog_recover *r_next;
49 xlog_tid_t r_log_tid; /* log's transaction id */
50 xfs_trans_header_t r_theader; /* trans header for partial */
51 int r_state; /* not needed */
52 xfs_lsn_t r_lsn; /* xact lsn */
53 xlog_recover_item_t *r_itemq; /* q for items */
56 #define ITEM_TYPE(i) (*(ushort *)(i)->ri_buf[0].i_addr)
59 * This is the number of entries in the l_buf_cancel_table used during
62 #define XLOG_BC_TABLE_SIZE 64
64 #define XLOG_RECOVER_PASS1 1
65 #define XLOG_RECOVER_PASS2 2
67 #endif /* __XFS_LOG_RECOVER_H__ */