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-rw-r--r--arch/sh/mm/pg-sh4.c22
1 files changed, 0 insertions, 22 deletions
diff --git a/arch/sh/mm/pg-sh4.c b/arch/sh/mm/pg-sh4.c
index 3f98d2a4f936..cfc323551741 100644
--- a/arch/sh/mm/pg-sh4.c
+++ b/arch/sh/mm/pg-sh4.c
@@ -23,7 +23,6 @@ extern struct mutex p3map_mutex[];
23 */ 23 */
24void clear_user_page(void *to, unsigned long address, struct page *page) 24void clear_user_page(void *to, unsigned long address, struct page *page)
25{ 25{
26 __set_bit(PG_mapped, &page->flags);
27 if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0) 26 if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0)
28 clear_page(to); 27 clear_page(to);
29 else { 28 else {
@@ -59,7 +58,6 @@ void clear_user_page(void *to, unsigned long address, struct page *page)
59void copy_user_page(void *to, void *from, unsigned long address, 58void copy_user_page(void *to, void *from, unsigned long address,
60 struct page *page) 59 struct page *page)
61{ 60{
62 __set_bit(PG_mapped, &page->flags);
63 if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0) 61 if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0)
64 copy_page(to, from); 62 copy_page(to, from);
65 else { 63 else {
@@ -84,23 +82,3 @@ void copy_user_page(void *to, void *from, unsigned long address,
84 mutex_unlock(&p3map_mutex[(address & CACHE_ALIAS)>>12]); 82 mutex_unlock(&p3map_mutex[(address & CACHE_ALIAS)>>12]);
85 } 83 }
86} 84}
87
88/*
89 * For SH-4, we have our own implementation for ptep_get_and_clear
90 */
91inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
92{
93 pte_t pte = *ptep;
94
95 pte_clear(mm, addr, ptep);
96 if (!pte_not_present(pte)) {
97 unsigned long pfn = pte_pfn(pte);
98 if (pfn_valid(pfn)) {
99 struct page *page = pfn_to_page(pfn);
100 struct address_space *mapping = page_mapping(page);
101 if (!mapping || !mapping_writably_mapped(mapping))
102 __clear_bit(PG_mapped, &page->flags);
103 }
104 }
105 return pte;
106}