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Date: Thu, 26 Mar 2009 17:53:14 +0000
From: Matthew Garrett <mjg@redhat.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Theodore Tso <tytso@mit.edu>, Ingo Molnar <mingo@elte.hu>,
       Jan Kara <jack@suse.cz>, Andrew Morton <akpm@linux-foundation.org>,
       Alan Cox <alan@lxorguk.ukuu.org.uk>,
       Arjan van de Ven <arjan@infradead.org>,
       Peter Zijlstra <a.p.zijlstra@chello.nl>, Nick Piggin <npiggin@suse.de>,
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       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Oleg Nesterov <oleg@redhat.com>, Roland McGrath <roland@redhat.com>
Subject: [PATCH 2/2] Make relatime default
Message-ID: <20090326175314.GC7198@srcf.ucam.org>
References: <alpine.LFD.2.00.0903251613300.3032@localhost.localdomain> <20090325235041.GA11024@duck.suse.cz> <20090326090630.GA9369@elte.hu> <20090326113705.GV32307@mit.edu> <20090326140312.GB14822@elte.hu> <20090326144707.GA6239@mit.edu> <alpine.LFD.2.00.0903260914440.3032@localhost.localdomain> <20090326170714.GF6239@mit.edu> <alpine.LFD.2.00.0903261015050.3032@localhost.localdomain> <20090326174956.GB7198@srcf.ucam.org>
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Change the default behaviour of the kernel to use relatime for all
filesystems. This can be overridden with the "strictatime" mount
option.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
---
 fs/namespace.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/namespace.c b/fs/namespace.c
index d0659ec..f0e7530 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1920,6 +1920,9 @@ long do_mount(char *dev_name, char *dir_name, char *type_page,
 	if (data_page)
 		((char *)data_page)[PAGE_SIZE - 1] = 0;
 
+	/* Default to relatime */
+	mnt_flags |= MNT_RELATIME;
+
 	/* Separate the per-mountpoint flags */
 	if (flags & MS_NOSUID)
 		mnt_flags |= MNT_NOSUID;
@@ -1931,8 +1934,6 @@ long do_mount(char *dev_name, char *dir_name, char *type_page,
 		mnt_flags |= MNT_NOATIME;
 	if (flags & MS_NODIRATIME)
 		mnt_flags |= MNT_NODIRATIME;
-	if (flags & MS_RELATIME)
-		mnt_flags |= MNT_RELATIME;
 	if (flags & MS_STRICTATIME)
 		mnt_flags &= ~(MNT_RELATIME | MNT_NOATIME);
 	if (flags & MS_RDONLY)

-- 
Matthew Garrett | mjg59@srcf.ucam.org
--
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