[PATCH] VFS: Handle lazytime in do_mount()

From: Markus Trippelsdorf
Date: Tue Sep 19 2017 - 06:18:25 EST


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@xxxxxxxxxxxxxxx>
---
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