Ingo,
It would seem that in the latest patch RT-V0.7.45-00 we have reverted back to removing the define of jbd_debug which the attached patch (against one of the 2.6.11 versions) fixed.
-- kr
--- linux-2.6.11/include/linux/jbd.h.orig 2005-03-16 09:18:51.000000000 -0600 +++ linux-2.6.11/include/linux/jbd.h 2005-03-16 09:19:24.000000000 -0600 @@ -65,6 +65,7 @@ extern int journal_enable_debug; } \ } while (0) #else +#define jbd_debug(f, a...) /**/ #endif extern void * __jbd_kmalloc (const char *where, size_t size, int flags, int retry);