[linuxsh-dev] cache handling improvement still...

[NIIBE Y. <gn...@m1...>]

With this, exec time goes better.

	* arch/sh/mm/fault.c (update_mmu_cache): Use __set_bit (was:
	set_bit).
	* arch/sh/mm/cache-sh4.c (copy_user_page): Set PG_mapped flag
	in advance.  Because it will be mapped real soon now.
	(clear_user_page): Ditto.

Index: arch/sh/mm/cache-sh4.c
===================================================================
RCS file: /cvsroot/linuxsh/kernel/arch/sh/mm/cache-sh4.c,v
retrieving revision 1.13
diff -u -r1.13 cache-sh4.c
--- arch/sh/mm/cache-sh4.c	2001/08/08 23:28:47	1.13
+++ arch/sh/mm/cache-sh4.c	2001/08/09 00:06:42
@@ -366,6 +366,9 @@
  */
 void clear_user_page(void *to, unsigned long address)
 {
+	struct page *page = virt_to_page(to);
+
+	__set_bit(PG_mapped, &page->flags);
 	if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0)
 		clear_page(to);
 	else {
@@ -402,6 +405,9 @@
  */
 void copy_user_page(void *to, void *from, unsigned long address)
 {
+	struct page *page = virt_to_page(to);
+
+	__set_bit(PG_mapped, &page->flags);
 	if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0)
 		copy_page(to, from);
 	else {
Index: arch/sh/mm/fault.c
===================================================================
RCS file: /cvsroot/linuxsh/kernel/arch/sh/mm/fault.c,v
retrieving revision 1.47
diff -u -r1.47 fault.c
--- arch/sh/mm/fault.c	2001/08/08 23:28:47	1.47
+++ arch/sh/mm/fault.c	2001/08/09 00:06:42
@@ -294,7 +294,7 @@
 	if (VALID_PAGE(page) && !test_bit(PG_mapped, &page->flags)) {
 		unsigned long phys = pte_val(pte) & PTE_PHYS_MASK;
 		__flush_wback_region((void *)P1SEGADDR(phys), PAGE_SIZE);
-		set_bit(PG_mapped, &page->flags);
+		__set_bit(PG_mapped, &page->flags);
 	}
 #endif
 
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