[PATCH] compile error of register_memory()

register_memory() becomes double definition in 2.6.20-rc1.  It is defined
in arch/i386/kernel/setup.c as static definition in 2.6.19.  But it is
moved to arch/i386/kernel/e820.c in 2.6.20-rc1.  And same name function is
defined in driver/base/memory.c too.  So, it becomes cause of compile error
of duplicate definition if memory hotplug option is on.

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/i386/kernel/e820.c

@@ -668,7 +668,7 @@ void __init register_bootmem_low_pages(unsigned long max_low_pfn)
 	}
 }
 
-void __init register_memory(void)
+void __init e820_register_memory(void)
 {
 	unsigned long gapstart, gapsize, round;
 	unsigned long long last;

arch/i386/kernel/setup.c

@@ -639,7 +639,7 @@ void __init setup_arch(char **cmdline_p)
 		get_smp_config();
 #endif
 
-	register_memory();
+	e820_register_memory();
 
 #ifdef CONFIG_VT
 #if defined(CONFIG_VGA_CONSOLE)

include/asm-i386/e820.h

@@ -40,7 +40,7 @@ extern int e820_all_mapped(unsigned long start, unsigned long end,
 			   unsigned type);
 extern void find_max_pfn(void);
 extern void register_bootmem_low_pages(unsigned long max_low_pfn);
-extern void register_memory(void);
+extern void e820_register_memory(void);
 extern void limit_regions(unsigned long long size);
 extern void print_memory_map(char *who);