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[Eddie Kohler]

And are you sure you have used the most recent kernel patch?

The most recent kernel patch (in CVS currently) contains this bit, which
exports the sb_lock symbol:

diff -ru --exclude=.depend --exclude='*.o' --exclude='*.orig'
--exclude='*.flags' ../x/linux-2.4.18-pure/kernel/ksyms.c ./kernel/ksyms.c
--- ../x/linux-2.4.18-pure/kernel/ksyms.c		  2002-06-08
23:28:47.000000000 -0700
+++ ./kernel/ksyms.c	2002-11-21 13:08:53.000000000 -0800
@@ -516,6 +516,8 @@
 EXPORT_SYMBOL(is_bad_inode);
 EXPORT_SYMBOL(event);
 EXPORT_SYMBOL(brw_page);
+EXPORT_SYMBOL(super_blocks);
+EXPORT_SYMBOL(sb_lock);
 
 #ifdef CONFIG_UID16
 EXPORT_SYMBOL(overflowuid);

Eddie