From: Namhyung Kim Subject: [PATCH] jbd: Use offset_in_page() instead of manual calculation Date: Tue, 5 Oct 2010 01:03:40 +0900 Message-ID: <1286208220-5151-1-git-send-email-namhyung@gmail.com> Cc: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org To: Andrew Morton , Jan Kara Return-path: Received: from mail-px0-f174.google.com ([209.85.212.174]:49420 "EHLO mail-px0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754062Ab0JDQDr (ORCPT ); Mon, 4 Oct 2010 12:03:47 -0400 Sender: linux-ext4-owner@vger.kernel.org List-ID: Signed-off-by: Namhyung Kim --- fs/jbd/transaction.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c index 981449c..c9bb7a7 100644 --- a/fs/jbd/transaction.c +++ b/fs/jbd/transaction.c @@ -711,7 +711,7 @@ done: J_EXPECT_JH(jh, buffer_uptodate(jh2bh(jh)), "Possible IO failure.\n"); page = jh2bh(jh)->b_page; - offset = ((unsigned long) jh2bh(jh)->b_data) & ~PAGE_MASK; + offset = offset_in_page(jh2bh(jh)->b_data); source = kmap_atomic(page, KM_USER0); memcpy(jh->b_frozen_data, source+offset, jh2bh(jh)->b_size); kunmap_atomic(source, KM_USER0); -- 1.7.0.4