2.6.16 sock_init() problem
 

[root@localhost net]# uname -a
Linux localhost.localdomain 2.6.16.1 #3 SMP Sun Sep 17 20:38:49 CST 2006 i686 i686 i386 GNU/Linux
/linux/init.h:

#define __define_initcall(level,fn) \
static initcall_t __initcall_##fn __attribute_used__ \
__attribute__((__section__(".initcall" level ".init"))) = fn

#define core_initcall(fn) __define_initcall("1",fn)

typedef int (*initcall_t)(void);

i don't understand the macrodefinition,why "=fn"
that's my question,thanks a lot!