From: "Wu, Bryan" <bryan.wu@analog.com>

Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/nommu.c |    8 ++++++++
 1 file changed, 8 insertions(+)

diff -puN mm/nommu.c~move-die-notifier-handling-to-common-code-fix mm/nommu.c
--- a/mm/nommu.c~move-die-notifier-handling-to-common-code-fix
+++ a/mm/nommu.c
@@ -262,6 +262,14 @@ void vunmap(void *addr)
 }
 
 /*
+ * Implement a stub for vmalloc_sync_all() if the architecture chose not to
+ * have one.
+ */
+void  __attribute__((weak)) vmalloc_sync_all(void)
+{
+}
+
+/*
  *  sys_brk() for the most part doesn't need the global kernel
  *  lock, except when an application is doing something nasty
  *  like trying to un-brk an area that has already been mapped
_