Quota block usage out of date until sync

[Brian Johnson <brian@xxxxxxxxxxxxxx>]

I noticed the block usage amount repquota reports is out of date for about
40 sec after a file is written or until sync is run.

For example,
# /usr/sbin/repquota /users | grep root ;\
dd count=1024 bs=1024 if=/dev/zero of=writetest ;\
/usr/sbin/repquota /users | grep root ;\
sleep 30 ;\
/usr/sbin/repquota /users | grep root ;\
sleep 10 ;\
/usr/sbin/repquota /users | grep root

Produces:

root      --    6176       0       0             19     0     0
1024+0 records in
1024+0 records out
root      --    6176       0       0             20     0     0
root      --    6176       0       0             20     0     0
root      --    7200       0       0             20     0     0


Running sync after the write gives up to date usage data:

# /usr/sbin/repquota /users | grep root ;\
dd count=1024 bs=1024 if=/dev/zero of=writetest2 ;\
sync ;\
/usr/sbin/repquota /users | grep root

root      --    7200       0       0             20     0     0
1024+0 records in
1024+0 records out
root      --    8224       0       0             21     0     0


Is there a way to get the number of used blocks that is not out of date? I
am running kernel 2.4.17 from CVS and also have tested this on the 1.0.2a
release.

Thanks,
Brian