Howto set norelatime on f15 root?

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F15beta running in vm.

I changed /etc/fstab to say:
/dev/mapper/vg_nbecker6f15-lv_root 
/                       ext4    norelatime        
1 1
UUID=768e1633-a96b-4932-832b-f65778b51627 /boot                   ext4    
defaults        1 2
...

But according to mount, norelatime was ignored.  2 questions:

1) What do I need to do to get norelatime?
2) I see /home mounted, but there is no entry in /etc/fstab.  Who mounted 
/home, 
and how can I change options?

(also tried running dracut, but still see no diff)

mount
/proc on /proc type proc (rw,relatime)
/sys on /sys type sysfs (rw,relatime,seclabel)
udev on /dev type devtmpfs 
(rw,nosuid,relatime,seclabel,size=502432k,nr_inodes=125608,mode=755)
devpts on /dev/pts type devpts 
(rw,relatime,seclabel,gid=5,mode=620,ptmxmode=000)
tmpfs on /dev/shm type tmpfs (rw,relatime,seclabel)
tmpfs on /run type tmpfs (rw,nosuid,nodev,noexec,relatime,seclabel,mode=755)
/dev/mapper/vg_nbecker6f15-lv_root on / type ext4 
(rw,relatime,seclabel,barrier=1,data=ordered)
selinuxfs on /selinux type selinuxfs (rw,relatime)
tmpfs on /sys/fs/cgroup type tmpfs 
(rw,nosuid,nodev,noexec,relatime,seclabel,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup 
(rw,nosuid,nodev,noexec,relatime,release_agent=/lib/systemd/systemd-cgroups-
agent,name=systemd)
cgroup on /sys/fs/cgroup/cpuset type cgroup 
(rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/ns type cgroup (rw,nosuid,nodev,noexec,relatime,ns)
cgroup on /sys/fs/cgroup/cpu type cgroup (rw,nosuid,nodev,noexec,relatime,cpu)
cgroup on /sys/fs/cgroup/cpuacct type cgroup 
(rw,nosuid,nodev,noexec,relatime,cpuacct)
cgroup on /sys/fs/cgroup/memory type cgroup 
(rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/devices type cgroup 
(rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/freezer type cgroup 
(rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/net_cls type cgroup 
(rw,nosuid,nodev,noexec,relatime,net_cls)
cgroup on /sys/fs/cgroup/blkio type cgroup 
(rw,nosuid,nodev,noexec,relatime,blkio)
systemd-1 on /dev/hugepages type autofs 
(rw,relatime,fd=28,pgrp=1,timeout=300,minproto=5,maxproto=5,direct)
systemd-1 on /sys/kernel/debug type autofs 
(rw,relatime,fd=29,pgrp=1,timeout=300,minproto=5,maxproto=5,direct)
systemd-1 on /sys/kernel/security type autofs 
(rw,relatime,fd=30,pgrp=1,timeout=300,minproto=5,maxproto=5,direct)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs 
(rw,relatime,fd=31,pgrp=1,timeout=300,minproto=5,maxproto=5,direct)
systemd-1 on /dev/mqueue type autofs 
(rw,relatime,fd=32,pgrp=1,timeout=300,minproto=5,maxproto=5,direct)
tmpfs on /media type tmpfs 
(rw,nosuid,nodev,noexec,relatime,rootcontext=system_u:object_r:mnt_t:s0,seclabel,mode=755)
/dev/sda1 on /boot type ext4 (rw,relatime,seclabel,barrier=1,data=ordered)
/dev/mapper/vg_nbecker6f15-lv_root on /tmp type ext4 
(rw,relatime,seclabel,barrier=1,data=ordered)
/dev/mapper/vg_nbecker6f15-lv_root on /var/tmp type ext4 
(rw,relatime,seclabel,barrier=1,data=ordered)
/dev/mapper/vg_nbecker6f15-lv_root on /home type ext4 
(rw,relatime,seclabel,barrier=1,data=ordered)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
none on /media/sf_nbecker type vboxsf (rw,nodev,relatime)


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