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| author | Yan, Zheng <zyan@redhat.com> | 2017-06-01 16:44:53 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2017-06-14 19:33:23 +0200 |
| commit | 56199016e8672feb7b903eda003a863d5bf2b8c4 (patch) | |
| tree | a3be21422d9d9c38e94535c5cb37f525ac372eeb /fs/ceph/mds_client.c | |
| parent | 03f219041fdbeb31cecff41bb1cb4e1018f9cf75 (diff) | |
| download | linux-56199016e8672feb7b903eda003a863d5bf2b8c4.tar.bz2 | |
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>
Diffstat (limited to 'fs/ceph/mds_client.c')
| -rw-r--r-- | fs/ceph/mds_client.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index f38e56fa9712..0c05df44cc6c 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -1687,7 +1687,6 @@ struct ceph_mds_request * ceph_mdsc_create_request(struct ceph_mds_client *mdsc, int op, int mode) { struct ceph_mds_request *req = kzalloc(sizeof(*req), GFP_NOFS); - struct timespec ts; if (!req) return ERR_PTR(-ENOMEM); @@ -1706,8 +1705,7 @@ ceph_mdsc_create_request(struct ceph_mds_client *mdsc, int op, int mode) init_completion(&req->r_safe_completion); INIT_LIST_HEAD(&req->r_unsafe_item); - ktime_get_real_ts(&ts); - req->r_stamp = timespec_trunc(ts, mdsc->fsc->sb->s_time_gran); + req->r_stamp = timespec_trunc(current_kernel_time(), mdsc->fsc->sb->s_time_gran); req->r_op = op; req->r_direct_mode = mode; |