1 files changed, 34 insertions, 38 deletions

diff --git a/arch/sh/mm/cache-sh7705.c b/arch/sh/mm/cache-sh7705.c
index 22dacc778823..2cadee2037ac 100644
--- a/arch/sh/mm/cache-sh7705.c
+++ b/arch/sh/mm/cache-sh7705.c
@@ -12,6 +12,7 @@
 #include <linux/init.h>
 #include <linux/mman.h>
 #include <linux/mm.h>
+#include <linux/fs.h>
 #include <linux/threads.h>
 #include <asm/addrspace.h>
 #include <asm/page.h>
@@ -63,15 +64,21 @@ static inline void cache_wback_all(void)
  *
  * Called from kernel/module.c:sys_init_module and routine for a.out format.
  */
-void flush_icache_range(unsigned long start, unsigned long end)
+static void sh7705_flush_icache_range(void *args)
 {
+        struct flusher_data *data = args;
+        unsigned long start, end;
+
+        start = data->addr1;
+        end = data->addr2;
+
         __flush_wback_region((void *)start, end - start);
 }
 
 /*
  * Writeback&Invalidate the D-cache of the page
  */
-static void __uses_jump_to_uncached __flush_dcache_page(unsigned long phys)
+static void __flush_dcache_page(unsigned long phys)
 {
         unsigned long ways, waysize, addrstart;
         unsigned long flags;
@@ -126,13 +133,18 @@ static void __uses_jump_to_uncached __flush_dcache_page(unsigned long phys)
  * Write back & invalidate the D-cache of the page.
  * (To avoid "alias" issues)
  */
-void flush_dcache_page(struct page *page)
+static void sh7705_flush_dcache_page(void *arg)
 {
-        if (test_bit(PG_mapped, &page->flags))
+        struct page *page = arg;
+        struct address_space *mapping = page_mapping(page);
+
+        if (mapping && !mapping_mapped(mapping))
+                set_bit(PG_dcache_dirty, &page->flags);
+        else
                 __flush_dcache_page(PHYSADDR(page_address(page)));
 }
 
-void __uses_jump_to_uncached flush_cache_all(void)
+static void sh7705_flush_cache_all(void *args)
 {
         unsigned long flags;
 
@@ -144,44 +156,16 @@ void __uses_jump_to_uncached flush_cache_all(void)
         local_irq_restore(flags);
 }
 
-void flush_cache_mm(struct mm_struct *mm)
-{
-        /* Is there any good way? */
-        /* XXX: possibly call flush_cache_range for each vm area */
-        flush_cache_all();
-}
-
-/*
- * Write back and invalidate D-caches.
- *
- * START, END: Virtual Address (U0 address)
- *
- * NOTE: We need to flush the _physical_ page entry.
- * Flushing the cache lines for U0 only isn't enough.
- * We need to flush for P1 too, which may contain aliases.
- */
-void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
-                       unsigned long end)
-{
-
-        /*
-         * We could call flush_cache_page for the pages of these range,
-         * but it's not efficient (scan the caches all the time...).
-         *
-         * We can't use A-bit magic, as there's the case we don't have
-         * valid entry on TLB.
-         */
-        flush_cache_all();
-}
-
 /*
  * Write back and invalidate I/D-caches for the page.
  *
  * ADDRESS: Virtual Address (U0 address)
  */
-void flush_cache_page(struct vm_area_struct *vma, unsigned long address,
-                      unsigned long pfn)
+static void sh7705_flush_cache_page(void *args)
 {
+        struct flusher_data *data = args;
+        unsigned long pfn = data->addr2;
+
         __flush_dcache_page(pfn << PAGE_SHIFT);
 }
 
@@ -193,7 +177,19 @@ void flush_cache_page(struct vm_area_struct *vma, unsigned long address,
  * Not entirely sure why this is necessary on SH3 with 32K cache but
  * without it we get occasional "Memory fault" when loading a program.
  */
-void flush_icache_page(struct vm_area_struct *vma, struct page *page)
+static void sh7705_flush_icache_page(void *page)
 {
         __flush_purge_region(page_address(page), PAGE_SIZE);
 }
+
+void __init sh7705_cache_init(void)
+{
+        local_flush_icache_range        = sh7705_flush_icache_range;
+        local_flush_dcache_page         = sh7705_flush_dcache_page;
+        local_flush_cache_all           = sh7705_flush_cache_all;
+        local_flush_cache_mm            = sh7705_flush_cache_all;
+        local_flush_cache_dup_mm        = sh7705_flush_cache_all;
+        local_flush_cache_range         = sh7705_flush_cache_all;
+        local_flush_cache_page          = sh7705_flush_cache_page;
+        local_flush_icache_page         = sh7705_flush_icache_page;
+}