From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752237Ab1ADJIg (ORCPT ); Tue, 4 Jan 2011 04:08:36 -0500 Received: from mail-pw0-f46.google.com ([209.85.160.46]:59922 "EHLO mail-pw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752087Ab1ADJId (ORCPT ); Tue, 4 Jan 2011 04:08:33 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer; b=hC7tbQXaJmASNJh6Z5VGNxq6q58kZbriBhssa6zFypZYjluIU6KjGUHMRp0ojrqmUT VCr1ZM6j6Jk9IzUfodu0DFgoRyUcQ4mLgpZfBlo7yUUGtZXU8dVGIyYD47za5BBDs2rc i2P/e53eIzPICrs+sr8YGmI4eIF2DUy8C7nFo= From: yangsheng To: linux-kernel@vger.kernel.org Cc: adilger@dilger.ca, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, swhiteho@redhat.com, yangsheng Subject: [PATCH] Update atime from future. Date: Tue, 4 Jan 2011 17:08:12 +0800 Message-Id: <1294132092-4423-1-git-send-email-sickamd@gmail.com> X-Mailer: git-send-email 1.7.2.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If atime has been wrong set to future, then it cannot be updated back to current time. Signed-off-by: sickamd@gmail.com Reviewed-by: adilger@dilger.ca --- fs/inode.c | 10 +++++++++- 1 files changed, 9 insertions(+), 1 deletions(-) diff --git a/fs/inode.c b/fs/inode.c index da85e56..d92779f 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1446,6 +1446,8 @@ sector_t bmap(struct inode *inode, sector_t block) } EXPORT_SYMBOL(bmap); +#define RELATIME_MARGIN (24 * 60 * 60) + /* * With relative atime, only update atime if the previous atime is * earlier than either the ctime or mtime or if at least a day has @@ -1469,10 +1471,16 @@ static int relatime_need_update(struct vfsmount *mnt, struct inode *inode, return 1; /* + * Is the previous atime value in future? If yes, + * update atime: + */ + if ((long)(now.tv_sec - inode->i_atime.tv_sec) < -RELATIME_MARGIN) + return 1; + /* * Is the previous atime value older than a day? If yes, * update atime: */ - if ((long)(now.tv_sec - inode->i_atime.tv_sec) >= 24*60*60) + if ((long)(now.tv_sec - inode->i_atime.tv_sec) >= RELATIME_MARGIN) return 1; /* * Good, we can skip the atime update: -- 1.7.2.3