Index: linux-2.6.0/fs/filesystems.c
===================================================================
--- linux-2.6.0.orig/fs/filesystems.c	2003-12-30 08:32:44.000000000 +0300
+++ linux-2.6.0/fs/filesystems.c	2003-12-31 01:10:16.000000000 +0300
@@ -27,7 +27,9 @@
  */
 
 static struct file_system_type *file_systems;
-static rwlock_t file_systems_lock = RW_LOCK_UNLOCKED;
+rwlock_t file_systems_lock = RW_LOCK_UNLOCKED;
+
+EXPORT_SYMBOL(file_systems_lock);
 
 /* WARNING: This can be used only if we _already_ own a reference */
 void get_filesystem(struct file_system_type *fs)
Index: linux-2.6.0/include/linux/fs.h
===================================================================
--- linux-2.6.0.orig/include/linux/fs.h	2003-12-31 00:33:41.000000000 +0300
+++ linux-2.6.0/include/linux/fs.h	2003-12-31 01:09:26.000000000 +0300
@@ -1390,6 +1390,7 @@
 
 extern struct file_operations generic_ro_fops;
 
+extern rwlock_t file_systems_lock;
 #define special_file(m) (S_ISCHR(m)||S_ISBLK(m)||S_ISFIFO(m)||S_ISSOCK(m))
 
 extern int vfs_readlink(struct dentry *, char __user *, int, const char *);
Index: linux-2.6.0/include/linux/ext2_fs_sb.h
===================================================================
--- linux-2.6.0.orig/include/linux/ext2_fs_sb.h	2003-05-15 20:10:39.000000000 +0400
+++ linux-2.6.0/include/linux/ext2_fs_sb.h	2003-12-31 01:09:26.000000000 +0300
@@ -16,9 +16,11 @@
 #ifndef _LINUX_EXT2_FS_SB
 #define _LINUX_EXT2_FS_SB
 
+#ifndef EXT_INCLUDE
+#define EXT_INCLUDE
 #include <linux/blockgroup_lock.h>
 #include <linux/percpu_counter.h>
-
+#endif
 /*
  * second extended-fs super-block data in memory
  */
Index: linux-2.6.0/include/linux/ext3_fs_sb.h
===================================================================
--- linux-2.6.0.orig/include/linux/ext3_fs_sb.h	2003-06-24 18:05:26.000000000 +0400
+++ linux-2.6.0/include/linux/ext3_fs_sb.h	2003-12-31 01:09:26.000000000 +0300
@@ -19,9 +19,12 @@
 #ifdef __KERNEL__
 #include <linux/timer.h>
 #include <linux/wait.h>
+#ifndef EXT_INCLUDE
+#define EXT_INCLUDE
 #include <linux/blockgroup_lock.h>
 #include <linux/percpu_counter.h>
 #endif
+#endif
 
 /*
  * third extended-fs super-block data in memory