[XFS] Fix uquota and oquota enforcement problems.

When uquota and oquota (gquota/pquota) are enabled for accounting both are
enforced if ether has enforcement active.

Conditions:

- Both XFS_UQUOTA_ACCT and XFS_GQUOTA_ACCT are enabled.

- Either XFS_UQUOTA_ENFD or XFS_OQUOTA_ENFD is enabled.

- The usage without enforce is reached at the soft limit.

Problems:

1. "repquota" shows all grace time even if no enforcement.

2. we cannot make a file over a hard limits even if no enforcement.

SGI-PV: 962291
SGI-Modid: xfs-linux-melb:xfs-kern:28272a

Signed-off-by: Kouta Ooizumi <k-ooizumi@tnes.nec.co.jp>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

fs/xfs/quota/xfs_trans_dquot.c

@@ -656,7 +656,9 @@ xfs_trans_dqresv(
 
 	if ((flags & XFS_QMOPT_FORCE_RES) == 0 &&
 	    dqp->q_core.d_id &&
-	    XFS_IS_QUOTA_ENFORCED(dqp->q_mount)) {
+	    ((XFS_IS_UQUOTA_ENFORCED(dqp->q_mount) && XFS_QM_ISUDQ(dqp)) ||
+	     (XFS_IS_OQUOTA_ENFORCED(dqp->q_mount) &&
+	      (XFS_QM_ISPDQ(dqp) || XFS_QM_ISGDQ(dqp))))) {
 #ifdef QUOTADEBUG
 		cmn_err(CE_DEBUG, "BLK Res: nblks=%ld + resbcount=%Ld"
 			  " > hardlimit=%Ld?", nblks, *resbcountp, hardlimit);