ARC: [mm] Assume pagecache page dirty by default
Similar to ARM/SH
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/include/asm/cacheflush.h b/arch/arc/include/asm/cacheflush.h
index 185dfd0..6abc497 100644
--- a/arch/arc/include/asm/cacheflush.h
+++ b/arch/arc/include/asm/cacheflush.h
@@ -81,6 +81,13 @@
#endif /* CONFIG_ARC_CACHE_VIPT_ALIASING */
/*
+ * A new pagecache page has PG_arch_1 clear - thus dcache dirty by default
+ * This works around some PIO based drivers which don't call flush_dcache_page
+ * to record that they dirtied the dcache
+ */
+#define PG_dc_clean PG_arch_1
+
+/*
* Simple wrapper over config option
* Bootup code ensures that hardware matches kernel configuration
*/