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diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h
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+/*
+ * Copyright (c) 2000-2002 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_ERROR_H__
+#define __XFS_ERROR_H__
+
+#define prdev(fmt,targ,args...) \
+ printk("XFS: device %s- " fmt "\n", XFS_BUFTARG_NAME(targ), ## args)
+
+#define XFS_ERECOVER 1 /* Failure to recover log */
+#define XFS_ELOGSTAT 2 /* Failure to stat log in user space */
+#define XFS_ENOLOGSPACE 3 /* Reservation too large */
+#define XFS_ENOTSUP 4 /* Operation not supported */
+#define XFS_ENOLSN 5 /* Can't find the lsn you asked for */
+#define XFS_ENOTFOUND 6
+#define XFS_ENOTXFS 7 /* Not XFS filesystem */
+
+#ifdef DEBUG
+#define XFS_ERROR_NTRAP 10
+extern int xfs_etrap[XFS_ERROR_NTRAP];
+extern int xfs_error_trap(int);
+#define XFS_ERROR(e) xfs_error_trap(e)
+#else
+#define XFS_ERROR(e) (e)
+#endif
+
+struct xfs_mount;
+
+extern void
+xfs_error_report(
+ char *tag,
+ int level,
+ struct xfs_mount *mp,
+ char *fname,
+ int linenum,
+ inst_t *ra);
+
+extern void
+xfs_corruption_error(
+ char *tag,
+ int level,
+ struct xfs_mount *mp,
+ void *p,
+ char *fname,
+ int linenum,
+ inst_t *ra);
+
+extern void
+xfs_hex_dump(void *p, int length);
+
+#define XFS_ERROR_REPORT(e, lvl, mp) \
+ xfs_error_report(e, lvl, mp, __FILE__, __LINE__, __return_address)
+#define XFS_CORRUPTION_ERROR(e, lvl, mp, mem) \
+ xfs_corruption_error(e, lvl, mp, mem, \
+ __FILE__, __LINE__, __return_address)
+
+#define XFS_ERRLEVEL_OFF 0
+#define XFS_ERRLEVEL_LOW 1
+#define XFS_ERRLEVEL_HIGH 5
+
+/*
+ * error injection tags - the labels can be anything you want
+ * but each tag should have its own unique number
+ */
+
+#define XFS_ERRTAG_NOERROR 0
+#define XFS_ERRTAG_IFLUSH_1 1
+#define XFS_ERRTAG_IFLUSH_2 2
+#define XFS_ERRTAG_IFLUSH_3 3
+#define XFS_ERRTAG_IFLUSH_4 4
+#define XFS_ERRTAG_IFLUSH_5 5
+#define XFS_ERRTAG_IFLUSH_6 6
+#define XFS_ERRTAG_DA_READ_BUF 7
+#define XFS_ERRTAG_BTREE_CHECK_LBLOCK 8
+#define XFS_ERRTAG_BTREE_CHECK_SBLOCK 9
+#define XFS_ERRTAG_ALLOC_READ_AGF 10
+#define XFS_ERRTAG_IALLOC_READ_AGI 11
+#define XFS_ERRTAG_ITOBP_INOTOBP 12
+#define XFS_ERRTAG_IUNLINK 13
+#define XFS_ERRTAG_IUNLINK_REMOVE 14
+#define XFS_ERRTAG_DIR_INO_VALIDATE 15
+#define XFS_ERRTAG_BULKSTAT_READ_CHUNK 16
+#define XFS_ERRTAG_IODONE_IOERR 17
+#define XFS_ERRTAG_STRATREAD_IOERR 18
+#define XFS_ERRTAG_STRATCMPL_IOERR 19
+#define XFS_ERRTAG_DIOWRITE_IOERR 20
+#define XFS_ERRTAG_BMAPIFORMAT 21
+#define XFS_ERRTAG_MAX 22
+
+/*
+ * Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
+ */
+#define XFS_RANDOM_DEFAULT 100
+#define XFS_RANDOM_IFLUSH_1 XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IFLUSH_2 XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IFLUSH_3 XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IFLUSH_4 XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IFLUSH_5 XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IFLUSH_6 XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_DA_READ_BUF XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_BTREE_CHECK_LBLOCK (XFS_RANDOM_DEFAULT/4)
+#define XFS_RANDOM_BTREE_CHECK_SBLOCK XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_ALLOC_READ_AGF XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IALLOC_READ_AGI XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_ITOBP_INOTOBP XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IUNLINK XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IUNLINK_REMOVE XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_DIR_INO_VALIDATE XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_BULKSTAT_READ_CHUNK XFS_RANDOM_DEFAULT
+#define XFS_RANDOM_IODONE_IOERR (XFS_RANDOM_DEFAULT/10)
+#define XFS_RANDOM_STRATREAD_IOERR (XFS_RANDOM_DEFAULT/10)
+#define XFS_RANDOM_STRATCMPL_IOERR (XFS_RANDOM_DEFAULT/10)
+#define XFS_RANDOM_DIOWRITE_IOERR (XFS_RANDOM_DEFAULT/10)
+#define XFS_RANDOM_BMAPIFORMAT XFS_RANDOM_DEFAULT
+
+#if (defined(DEBUG) || defined(INDUCE_IO_ERROR))
+extern int xfs_error_test(int, int *, char *, int, char *, unsigned long);
+void xfs_error_test_init(void);
+
+#define XFS_NUM_INJECT_ERROR 10
+
+#ifdef __ANSI_CPP__
+#define XFS_TEST_ERROR(expr, mp, tag, rf) \
+ ((expr) || \
+ xfs_error_test((tag), (mp)->m_fixedfsid, #expr, __LINE__, __FILE__, \
+ (rf)))
+#else
+#define XFS_TEST_ERROR(expr, mp, tag, rf) \
+ ((expr) || \
+ xfs_error_test((tag), (mp)->m_fixedfsid, "expr", __LINE__, __FILE__, \
+ (rf)))
+#endif /* __ANSI_CPP__ */
+
+int xfs_errortag_add(int error_tag, xfs_mount_t *mp);
+int xfs_errortag_clear(int error_tag, xfs_mount_t *mp);
+
+int xfs_errortag_clearall(xfs_mount_t *mp);
+int xfs_errortag_clearall_umount(int64_t fsid, char *fsname,
+ int loud);
+#else
+#define XFS_TEST_ERROR(expr, mp, tag, rf) (expr)
+#define xfs_errortag_add(tag, mp) (ENOSYS)
+#define xfs_errortag_clearall(mp) (ENOSYS)
+#endif /* (DEBUG || INDUCE_IO_ERROR) */
+
+/*
+ * XFS panic tags -- allow a call to xfs_cmn_err() be turned into
+ * a panic by setting xfs_panic_mask in a
+ * sysctl. update xfs_max[XFS_PARAM] if
+ * more are added.
+ */
+#define XFS_NO_PTAG 0
+#define XFS_PTAG_IFLUSH 0x00000001
+#define XFS_PTAG_LOGRES 0x00000002
+#define XFS_PTAG_AILDELETE 0x00000004
+#define XFS_PTAG_ERROR_REPORT 0x00000008
+#define XFS_PTAG_SHUTDOWN_CORRUPT 0x00000010
+#define XFS_PTAG_SHUTDOWN_IOERROR 0x00000020
+#define XFS_PTAG_SHUTDOWN_LOGERROR 0x00000040
+
+struct xfs_mount;
+/* PRINTFLIKE4 */
+void xfs_cmn_err(int panic_tag, int level, struct xfs_mount *mp,
+ char *fmt, ...);
+/* PRINTFLIKE3 */
+void xfs_fs_cmn_err(int level, struct xfs_mount *mp, char *fmt, ...);
+
+#endif /* __XFS_ERROR_H__ */
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