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-rw-r--r--include/asm-s390/cacheflush.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-s390/cacheflush.h b/include/asm-s390/cacheflush.h
index e399a8ba2ed..f7cade8083f 100644
--- a/include/asm-s390/cacheflush.h
+++ b/include/asm-s390/cacheflush.h
@@ -7,6 +7,7 @@
/* Caches aren't brain-dead on the s390. */
#define flush_cache_all() do { } while (0)
#define flush_cache_mm(mm) do { } while (0)
+#define flush_cache_dup_mm(mm) do { } while (0)
#define flush_cache_range(vma, start, end) do { } while (0)
#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
#define flush_dcache_page(page) do { } while (0)