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 */ 25 typedef 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 33 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 }; 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