ceph: don't fudge the ctime in stat() unless it's really older than t…

…he mtime

The current code just looks at the sec field, but the difference may
only be evident in the nsec field.

Signed-off-by: Jeff Layton <jlayton@redhat.com>

src/client/Client.cc

@@ -6681,7 +6681,7 @@ int Client::fill_stat(Inode *in, struct stat *st, frag_info_t *dirstat, nest_inf
   st->st_nlink = in->nlink;
   st->st_uid = in->uid;
   st->st_gid = in->gid;
-  if (in->ctime.sec() > in->mtime.sec()) {
+  if (in->ctime > in->mtime) {
     stat_set_ctime_sec(st, in->ctime.sec());
     stat_set_ctime_nsec(st, in->ctime.nsec());
   } else {