--- zzzz-none-000/linux-3.10.107/arch/mips/mm/c-r3k.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/arch/mips/mm/c-r3k.c	2021-11-10 11:53:54.000000000 +0000
@@ -274,6 +274,12 @@
 {
 }
 
+static void r3_mips_flush_data_cache_range(struct vm_area_struct *vma,
+	struct page *page, unsigned long addr, unsigned long size)
+{
+	r3k_flush_cache_page(vma, addr, page_to_pfn(page));
+}
+
 static void r3k_flush_cache_sigtramp(unsigned long addr)
 {
 	unsigned long flags;
@@ -322,7 +328,7 @@
 	flush_cache_all = r3k_flush_cache_all;
 	__flush_cache_all = r3k___flush_cache_all;
 	flush_cache_mm = r3k_flush_cache_mm;
-	flush_cache_range = r3k_flush_cache_range;
+	mips_flush_cache_range = r3k_mips_flush_cache_range;
 	flush_cache_page = r3k_flush_cache_page;
 	flush_icache_range = r3k_flush_icache_range;
 	local_flush_icache_range = r3k_flush_icache_range;
@@ -332,6 +338,7 @@
 	flush_cache_sigtramp = r3k_flush_cache_sigtramp;
 	local_flush_data_cache_page = local_r3k_flush_data_cache_page;
 	flush_data_cache_page = r3k_flush_data_cache_page;
+	flush_data_cache_range = r3_flush_data_cache_range;
 
 	_dma_cache_wback_inv = r3k_dma_cache_wback_inv;
 	_dma_cache_wback = r3k_dma_cache_wback_inv;