1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Copyright (c) 2000,2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6#ifndef __XFS_LOG_RECOVER_H__ 7#define __XFS_LOG_RECOVER_H__ 8 9/* 10 * Macros, structures, prototypes for internal log manager use. 11 */ 12 13#define XLOG_RHASH_BITS 4 14#define XLOG_RHASH_SIZE 16 15#define XLOG_RHASH_SHIFT 2 16#define XLOG_RHASH(tid) \ 17 ((((uint32_t)tid)>>XLOG_RHASH_SHIFT) & (XLOG_RHASH_SIZE-1)) 18 19#define XLOG_MAX_REGIONS_IN_ITEM (XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK / 2 + 1) 20 21 22/* 23 * item headers are in ri_buf[0]. Additional buffers follow. 24 */ 25typedef struct xlog_recover_item { 26 struct list_head ri_list; 27 int ri_type; 28 int ri_cnt; /* count of regions found */ 29 int ri_total; /* total regions */ 30 xfs_log_iovec_t *ri_buf; /* ptr to regions buffer */ 31} xlog_recover_item_t; 32 33typedef struct xlog_recover { 34 struct hlist_node r_list; 35 xlog_tid_t r_log_tid; /* log's transaction id */ 36 xfs_trans_header_t r_theader; /* trans header for partial */ 37 int r_state; /* not needed */ 38 xfs_lsn_t r_lsn; /* xact lsn */ 39 struct list_head r_itemq; /* q for items */ 40} xlog_recover_t; 41 42#define ITEM_TYPE(i) (*(unsigned short *)(i)->ri_buf[0].i_addr) 43 44/* 45 * This is the number of entries in the l_buf_cancel_table used during 46 * recovery. 47 */ 48#define XLOG_BC_TABLE_SIZE 64 49 50#define XLOG_RECOVER_CRCPASS 0 51#define XLOG_RECOVER_PASS1 1 52#define XLOG_RECOVER_PASS2 2 53 54#endif /* __XFS_LOG_RECOVER_H__ */ 55