linux-kernel - [PATCH] VFS: Handle lazytime in do

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Message-ID: <20170919101819.GA233@x4>
Date:   Tue, 19 Sep 2017 12:18:19 +0200
From:   Markus Trippelsdorf <markus@...ppelsdorf.de>
To:     Theodore Ts'o <tytso@....edu>
Cc:     Andreas Dilger <adilger.kernel@...ger.ca>,
        linux-ext4@...r.kernel.org,
        Alexander Viro <viro@...iv.linux.org.uk>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] VFS: Handle lazytime in do_mount()

The lazytime option didn't get passed on when using current util-linux,
which passes MS_LAZYTIME in the mountflags directly.

Fix the issue by handling the option in do_mount().

Signed-off-by: Markus Trippelsdorf <markus@...ppelsdorf.de>
---
 fs/namespace.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/namespace.c b/fs/namespace.c
index 54059b142d6b..b633838b8f02 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2823,7 +2823,8 @@ long do_mount(const char *dev_name, const char __user *dir_name,
 			    SB_MANDLOCK |
 			    SB_DIRSYNC |
 			    SB_SILENT |
-			    SB_POSIXACL);
+			    SB_POSIXACL |
+			    MS_LAZYTIME);
 
 	if (flags & MS_REMOUNT)
 		retval = do_remount(&path, flags, sb_flags, mnt_flags,
-- 
Markus