ceph: use current_kernel_time() to get request time stamp
authorYan, Zheng <zyan@redhat.com>
Thu, 1 Jun 2017 08:44:53 +0000 (16:44 +0800)
committerIlya Dryomov <idryomov@gmail.com>
Wed, 14 Jun 2017 17:33:23 +0000 (19:33 +0200)
commit56199016e8672feb7b903eda003a863d5bf2b8c4
treea3be21422d9d9c38e94535c5cb37f525ac372eeb
parent03f219041fdbeb31cecff41bb1cb4e1018f9cf75
ceph: use current_kernel_time() to get request time stamp

ceph uses ktime_get_real_ts() to get request time stamp. In most
other cases, current_kernel_time() is used to get time stamp for
filesystem operations (called by current_time()).

There is granularity difference between ktime_get_real_ts() and
current_kernel_time(). The later one can be up to one jiffy behind
the former one. This can causes inode's ctime to go back.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
fs/ceph/mds_client.c