Description of problem:
When created hard links across different quota limit set directories, quota list doesn't show proper size utilization. The below specified is just one use case I could consistently reproduce the bug. I found few more cases hard links screws  the quota accounting.

Version-Release number of selected component (if applicable):
rhs-2.1 

How reproducible:
Always

Steps to Reproduce:
1. Create distribute volume, start, enable quota.
2. set limit on a dir say /dir
3. create a file of say 5MB in dir/testfile.
4. ln dir/testfile dir/newtestfile
5. rm -f dir/newtestfile

Now the quota list shows the size utilized on d1 to be zero.

Actual results:

root@-d# ls
dir
root@-d# dd if=/dev/urandom of=dir/file
^C10537+0 records in
10537+0 records out
5394944 bytes (5.4 MB) copied, 0.886182 s, 6.1 MB/s

root@-d# gv q d list
                  Path                   Hard-limit Soft-limit   Used  Available
--------------------------------------------------------------------------------
/dir                                     100.0MB       80%       5.1MB  94.9MB
root@-d# ln dir/file dir/newfile
root@-d# gv q d list
                  Path                   Hard-limit Soft-limit   Used  Available
--------------------------------------------------------------------------------
/dir                                     100.0MB       80%       5.1MB  94.9MB
root@-d# rm -f dir/newfile 
root@-d# gv q d list
                  Path                   Hard-limit Soft-limit   Used  Available
--------------------------------------------------------------------------------
/dir                                     100.0MB       80%      0Bytes 100.0MB
root@-d# 

Expected results:

After the rm -f of newfilconsistantlye. the dir should still show 5.1MB as used as the file is still present.

Additional info: