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-rw-r--r--arch/arm/mm/copypage-v4mc.c6
-rw-r--r--arch/arm/mm/copypage-v6.c4
-rw-r--r--arch/arm/mm/copypage-xscale.c6
-rw-r--r--include/asm-arm/cacheflush.h2
4 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/mm/copypage-v4mc.c b/arch/arm/mm/copypage-v4mc.c
index 408b05a..ded0e96 100644
--- a/arch/arm/mm/copypage-v4mc.c
+++ b/arch/arm/mm/copypage-v4mc.c
@@ -19,6 +19,7 @@
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
+#include <asm/cacheflush.h>
#include "mm.h"
@@ -69,6 +70,11 @@ mc_copy_user_page(void *from, void *to)
void v4_mc_copy_user_page(void *kto, const void *kfrom, unsigned long vaddr)
{
+ struct page *page = virt_to_page(kfrom);
+
+ if (test_and_clear_bit(PG_dcache_dirty, &page->flags))
+ __flush_dcache_page(page_mapping(page), page);
+
spin_lock(&minicache_lock);
set_pte_ext(TOP_PTE(0xffff8000), pfn_pte(__pa(kfrom) >> PAGE_SHIFT, minicache_pgprot), 0);
diff --git a/arch/arm/mm/copypage-v6.c b/arch/arm/mm/copypage-v6.c
index 865777d..3adb792 100644
--- a/arch/arm/mm/copypage-v6.c
+++ b/arch/arm/mm/copypage-v6.c
@@ -53,6 +53,10 @@ static void v6_copy_user_page_aliasing(void *kto, const void *kfrom, unsigned lo
{
unsigned int offset = CACHE_COLOUR(vaddr);
unsigned long from, to;
+ struct page *page = virt_to_page(kfrom);
+
+ if (test_and_clear_bit(PG_dcache_dirty, &page->flags))
+ __flush_dcache_page(page_mapping(page), page);
/*
* Discard data in the kernel mapping for the new page.
diff --git a/arch/arm/mm/copypage-xscale.c b/arch/arm/mm/copypage-xscale.c
index aea5da7..2e455f8 100644
--- a/arch/arm/mm/copypage-xscale.c
+++ b/arch/arm/mm/copypage-xscale.c
@@ -19,6 +19,7 @@
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
+#include <asm/cacheflush.h>
#include "mm.h"
@@ -91,6 +92,11 @@ mc_copy_user_page(void *from, void *to)
void xscale_mc_copy_user_page(void *kto, const void *kfrom, unsigned long vaddr)
{
+ struct page *page = virt_to_page(kfrom);
+
+ if (test_and_clear_bit(PG_dcache_dirty, &page->flags))
+ __flush_dcache_page(page_mapping(page), page);
+
spin_lock(&minicache_lock);
set_pte_ext(TOP_PTE(COPYPAGE_MINICACHE), pfn_pte(__pa(kfrom) >> PAGE_SHIFT, minicache_pgprot), 0);
diff --git a/include/asm-arm/cacheflush.h b/include/asm-arm/cacheflush.h
index 378a3a2..d510495 100644
--- a/include/asm-arm/cacheflush.h
+++ b/include/asm-arm/cacheflush.h
@@ -355,6 +355,8 @@ extern void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
*/
extern void flush_dcache_page(struct page *);
+extern void __flush_dcache_page(struct address_space *mapping, struct page *page);
+
#define flush_dcache_mmap_lock(mapping) \
write_lock_irq(&(mapping)->tree_lock)
#define flush_dcache_mmap_unlock(mapping) \
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