[help] project quota information incorrect over nfs ...

[Christoph Hellwig]

On Thu, Jan 21, 2010 at 01:12:06PM +0900, Guk-Bong, Kwon wrote:
> nfs client "nfs_server:/test/111" Size is correct..(100M)
> 
> but nfs client "nfs_server:/test/111" Avail is incorrect.. (500M)
> 
> "Avail" is big than "Size" ...
> 
> this stat is normal??

No, it's not.  The patch below should fix it, but I'm not sure how
easily backportable it is to 2.6.27:

Signed-off-by: Christoph Hellwig <hch at lst.de>

Index: linux-2.6/fs/xfs/quota/xfs_qm_bhv.c
===================================================================
--- linux-2.6.orig/fs/xfs/quota/xfs_qm_bhv.c	2010-01-21 12:13:51.397003969 +0100
+++ linux-2.6/fs/xfs/quota/xfs_qm_bhv.c	2010-01-21 12:14:14.290009571 +0100
@@ -59,7 +59,7 @@ xfs_fill_statvfs_from_dquot(
 		be64_to_cpu(dp->d_blk_hardlimit);
 	if (limit && statp->f_blocks > limit) {
 		statp->f_blocks = limit;
-		statp->f_bfree =
+		statp->f_bfree = statp->f_bavail =
 			(statp->f_blocks > be64_to_cpu(dp->d_bcount)) ?
 			 (statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0;
 	}