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-rw-r--r--mm/nommu.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/nommu.c b/mm/nommu.c
index 1f60194d9b9..2b16b00a5b1 100644
--- a/mm/nommu.c
+++ b/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