From: Nate Diller <nate.diller@gmail.com>

Use zero_user_page() instead of open-coding it.

Signed-off-by: Nate Diller <nate.diller@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/ocfs2/aops.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff -puN fs/ocfs2/aops.c~ocfs2-use-zero_user_page fs/ocfs2/aops.c
--- a/fs/ocfs2/aops.c~ocfs2-use-zero_user_page
+++ a/fs/ocfs2/aops.c
@@ -234,10 +234,7 @@ static int ocfs2_readpage(struct file *f
 	 * XXX sys_readahead() seems to get that wrong?
 	 */
 	if (start >= i_size_read(inode)) {
-		char *addr = kmap(page);
-		memset(addr, 0, PAGE_SIZE);
-		flush_dcache_page(page);
-		kunmap(page);
+		zero_user_page(page, 0, PAGE_SIZE, KM_USER0);
 		SetPageUptodate(page);
 		ret = 0;
 		goto out_alloc;
_