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1da177e4 | 1 | /* |
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2 | * Copyright (c) 2000,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
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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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
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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. | |
1da177e4 | 13 | * |
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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 | |
1da177e4 LT |
17 | */ |
18 | #ifndef __XFS_LOG_RECOVER_H__ | |
19 | #define __XFS_LOG_RECOVER_H__ | |
20 | ||
21 | /* | |
22 | * Macros, structures, prototypes for internal log manager use. | |
23 | */ | |
24 | ||
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)) | |
30 | ||
31 | #define XLOG_MAX_REGIONS_IN_ITEM (XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK / 2 + 1) | |
32 | ||
33 | ||
34 | /* | |
35 | * item headers are in ri_buf[0]. Additional buffers follow. | |
36 | */ | |
37 | typedef struct xlog_recover_item { | |
38 | struct xlog_recover_item *ri_next; | |
39 | struct xlog_recover_item *ri_prev; | |
40 | int ri_type; | |
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; | |
45 | ||
46 | struct xlog_tid; | |
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 */ | |
54 | } xlog_recover_t; | |
55 | ||
56 | #define ITEM_TYPE(i) (*(ushort *)(i)->ri_buf[0].i_addr) | |
57 | ||
58 | /* | |
59 | * This is the number of entries in the l_buf_cancel_table used during | |
60 | * recovery. | |
61 | */ | |
62 | #define XLOG_BC_TABLE_SIZE 64 | |
63 | ||
64 | #define XLOG_RECOVER_PASS1 1 | |
65 | #define XLOG_RECOVER_PASS2 2 | |
66 | ||
67 | #endif /* __XFS_LOG_RECOVER_H__ */ |