2.6.24-git15

 fs

diff --git a/fs/libfs.c b/fs/libfs.c
index 6e68b70..5523bde 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -341,13 +341,10 @@ int simple_prepare_write(struct file *file, struct page *page,
          unsigned from, unsigned to)
 {
    if (!PageUptodate(page)) {
-      if (to - from != PAGE_CACHE_SIZE) {
-         void *kaddr = kmap_atomic(page, KM_USER0);
-         memset(kaddr, 0, from);
-         memset(kaddr + to, 0, PAGE_CACHE_SIZE - to);
-         flush_dcache_page(page);
-         kunmap_atomic(kaddr, KM_USER0);
-      }
+      if (to - from != PAGE_CACHE_SIZE)
+         zero_user_segments(page,
+            0, from,
+            to, PAGE_CACHE_SIZE);
    }
    return 0;
 }