[PATCH] mm: parisc pte atomicity

[linux-2.6-omap-h63xx.git] / arch / parisc / kernel / cache.c

diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index e15f09eaed121b4ac13810d420e79d46b9e3190f..a065349aee37664ee12f7ec0dd06f78ee5d7e50a 100644 (file)
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -270,7 +270,6 @@ void flush_dcache_page(struct page *page)
        unsigned long offset;
        unsigned long addr;
        pgoff_t pgoff;
-       pte_t *pte;
        unsigned long pfn = page_to_pfn(page);
 
 
@@ -301,21 +300,16 @@ void flush_dcache_page(struct page *page)
                 * taking a page fault if the pte doesn't exist.
                 * This is just for speed.  If the page translation
                 * isn't there, there's no point exciting the
-                * nadtlb handler into a nullification frenzy */
-
-
-               if(!(pte = translation_exists(mpnt, addr)))
-                       continue;
-
-               /* make sure we really have this page: the private
+                * nadtlb handler into a nullification frenzy.
+                *
+                * Make sure we really have this page: the private
                 * mappings may cover this area but have COW'd this
-                * particular page */
-               if(pte_pfn(*pte) != pfn)
-                       continue;
-
-               __flush_cache_page(mpnt, addr);
-
-               break;
+                * particular page.
+                */
+               if (translation_exists(mpnt, addr, pfn)) {
+                       __flush_cache_page(mpnt, addr);
+                       break;
+               }
        }
        flush_dcache_mmap_unlock(mapping);
 }