| /* |
| * 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__ */ |