#endif
}
-extern void flush_dcache_page(struct page *page);
+extern void __flush_dcache_page(struct page *page);
+
+static inline void flush_dcache_page(struct page *page)
+{
+ struct address_space *mapping = page_mapping(page);
+
+ if (mapping && !mapping_mapped(mapping)) {
+ set_bit(PG_dcache_dirty, &page->flags);
+ } else {
+ __flush_dcache_page(page);
+ }
+}
#define flush_dcache_mmap_lock(mapping) \
spin_lock_irq(&(mapping)->tree_lock)
/* Simple function to work out if we have an existing address translation
* for a user space vma. */
-static inline pte_t *__translation_exists(struct mm_struct *mm,
- unsigned long addr)
+static inline int translation_exists(struct vm_area_struct *vma,
+ unsigned long addr)
{
- pgd_t *pgd = pgd_offset(mm, addr);
+ pgd_t *pgd = pgd_offset(vma->vm_mm, addr);
pmd_t *pmd;
pte_t *pte;
if(pgd_none(*pgd))
- return NULL;
+ return 0;
pmd = pmd_offset(pgd, addr);
if(pmd_none(*pmd) || pmd_bad(*pmd))
- return NULL;
+ return 0;
pte = pte_offset_map(pmd, addr);
/* The PA flush mappings show up as pte_none, but they're
* valid none the less */
if(pte_none(*pte) && ((pte_val(*pte) & _PAGE_FLUSH) == 0))
- return NULL;
- return pte;
+ return 0;
+ return 1;
}
-#define translation_exists(vma, addr) __translation_exists((vma)->vm_mm, addr)
/* Private function to flush a page from the cache of a non-current