[PATCH] Fix undefined symbols for nommu architecture

Signed-off-by: Luke Yang <luke.adi@gmail.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 26e1663a5cbe..498ff8778fb6 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1051,7 +1051,11 @@ int shrink_slab(unsigned long scanned, gfp_t gfp_mask,
 void drop_pagecache(void);
 void drop_slab(void);
 
+#ifndef CONFIG_MMU
+#define randomize_va_space 0
+#else
 extern int randomize_va_space;
+#endif
 
 #endif /* __KERNEL__ */
 #endif /* _LINUX_MM_H */
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index ebc41bf22f1e..c05a2b7125e1 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -636,6 +636,7 @@ static ctl_table kern_table[] = {
                 .proc_handler   = &proc_dointvec,
         },
 #endif
+#if defined(CONFIG_MMU)
         {
                 .ctl_name       = KERN_RANDOMIZE,
                 .procname       = "randomize_va_space",
@@ -644,6 +645,7 @@ static ctl_table kern_table[] = {
                 .mode           = 0644,
                 .proc_handler   = &proc_dointvec,
         },
+#endif
 #if defined(CONFIG_S390) && defined(CONFIG_SMP)
         {
                 .ctl_name       = KERN_SPIN_RETRY,
diff --git a/mm/nommu.c b/mm/nommu.c
index c10262d68232..99d21020ec9d 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -57,6 +57,8 @@ EXPORT_SYMBOL(vmalloc);
 EXPORT_SYMBOL(vfree);
 EXPORT_SYMBOL(vmalloc_to_page);
 EXPORT_SYMBOL(vmalloc_32);
+EXPORT_SYMBOL(vmap);
+EXPORT_SYMBOL(vunmap);
 
 /*
  * Handle all mappings that got truncated by a "truncate()"