ARC: [mm] optimise VIPT dcache aliasing 2/x
Non-congruent SRC page in copy_user_page() is dcache clean in the end -
so record that fact, to avoid a subsequent extraneous flush.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/mm/cache_arc700.c b/arch/arc/mm/cache_arc700.c
index 4e54ef5..0746587 100644
--- a/arch/arc/mm/cache_arc700.c
+++ b/arch/arc/mm/cache_arc700.c
@@ -742,6 +742,7 @@
*/
if (clean_src_k_mappings) {
__flush_dcache_page(kfrom, kfrom);
+ clear_bit(PG_arch_1, &from->flags);
} else {
set_bit(PG_arch_1, &from->flags);
}