patch-2.4.25 linux-2.4.25/fs/xfs/xfs_log_recover.h

• Lines: 82
• Date: 2004-02-18 05:36:32.000000000 -0800
• Orig file: linux-2.4.24/fs/xfs/xfs_log_recover.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.24/fs/xfs/xfs_log_recover.h linux-2.4.25/fs/xfs/xfs_log_recover.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 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.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like.  Any license provided herein, whether implied or
+ * otherwise, applies only to this software file.  Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
+ * Mountain View, CA  94043, or:
+ *
+ * http://www.sgi.com
+ *
+ * For further information regarding this notice, see:
+ *
+ * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ */
+#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_BLI_CHUNK / 2 + 1)
+
+
+/*
+ * item headers are in ri_buf[0].  Additional buffers follow.
+ */
+typedef struct xlog_recover_item {
+	struct xlog_recover_item *ri_next;
+	struct xlog_recover_item *ri_prev;
+	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 xlog_recover *r_next;
+	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 */
+	xlog_recover_item_t *r_itemq;		/* q for items */
+} xlog_recover_t;
+
+#define ITEM_TYPE(i)	(*(ushort *)(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_PASS1	1
+#define	XLOG_RECOVER_PASS2	2
+
+#endif	/* __XFS_LOG_RECOVER_H__ */