diff --git a/fs/xfs/support/debug.c b/fs/xfs/support/debug.c
new file mode 100644
index 0000000..7d6e1f3
--- /dev/null
+++ b/fs/xfs/support/debug.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2000-2003 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/
+ */
+
+#include "debug.h"
+
+#include <asm/page.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+
+int			doass = 1;
+static char		message[256];	/* keep it off the stack */
+static DEFINE_SPINLOCK(xfs_err_lock);
+
+/* Translate from CE_FOO to KERN_FOO, err_level(CE_FOO) == KERN_FOO */
+#define XFS_MAX_ERR_LEVEL	7
+#define XFS_ERR_MASK		((1 << 3) - 1)
+static char		*err_level[XFS_MAX_ERR_LEVEL+1] =
+					{KERN_EMERG, KERN_ALERT, KERN_CRIT,
+					 KERN_ERR, KERN_WARNING, KERN_NOTICE,
+					 KERN_INFO, KERN_DEBUG};
+
+void
+assfail(char *a, char *f, int l)
+{
+    printk("XFS assertion failed: %s, file: %s, line: %d\n", a, f, l);
+    BUG();
+}
+
+#if ((defined(DEBUG) || defined(INDUCE_IO_ERRROR)) && !defined(NO_WANT_RANDOM))
+
+unsigned long
+random(void)
+{
+	static unsigned long	RandomValue = 1;
+	/* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
+	register long	rv = RandomValue;
+	register long	lo;
+	register long	hi;
+
+	hi = rv / 127773;
+	lo = rv % 127773;
+	rv = 16807 * lo - 2836 * hi;
+	if( rv <= 0 ) rv += 2147483647;
+	return( RandomValue = rv );
+}
+
+int
+get_thread_id(void)
+{
+	return current->pid;
+}
+
+#endif /* DEBUG || INDUCE_IO_ERRROR || !NO_WANT_RANDOM */
+
+void
+cmn_err(register int level, char *fmt, ...)
+{
+	char	*fp = fmt;
+	int	len;
+	ulong	flags;
+	va_list	ap;
+
+	level &= XFS_ERR_MASK;
+	if (level > XFS_MAX_ERR_LEVEL)
+		level = XFS_MAX_ERR_LEVEL;
+	spin_lock_irqsave(&xfs_err_lock,flags);
+	va_start(ap, fmt);
+	if (*fmt == '!') fp++;
+	len = vsprintf(message, fp, ap);
+	if (message[len-1] != '\n')
+		strcat(message, "\n");
+	printk("%s%s", err_level[level], message);
+	va_end(ap);
+	spin_unlock_irqrestore(&xfs_err_lock,flags);
+
+	if (level == CE_PANIC)
+		BUG();
+}
+
+
+void
+icmn_err(register int level, char *fmt, va_list ap)
+{
+	ulong	flags;
+	int	len;
+
+	level &= XFS_ERR_MASK;
+	if(level > XFS_MAX_ERR_LEVEL)
+		level = XFS_MAX_ERR_LEVEL;
+	spin_lock_irqsave(&xfs_err_lock,flags);
+	len = vsprintf(message, fmt, ap);
+	if (message[len-1] != '\n')
+		strcat(message, "\n");
+	spin_unlock_irqrestore(&xfs_err_lock,flags);
+	printk("%s%s", err_level[level], message);
+	if (level == CE_PANIC)
+		BUG();
+}