diff --git a/include/linux/cacheflush.h b/include/linux/cacheflush.h
index fef8b607f97e..a6189d21f2ba 100644
--- a/include/linux/cacheflush.h
+++ b/include/linux/cacheflush.h
@@ -4,6 +4,8 @@
 
 #include <asm/cacheflush.h>
 
+struct folio;
+
 #if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
 #ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO
 void flush_dcache_folio(struct folio *folio);