[PATCH] Quota fix 1

[Jan Kara]

  Hello,

  I'm sending you a patch which fixes the problem with release_dqblk()
being NULL for old quota format. The patch is against 2.6.6 (+the patch
you submitted to Linus). Please apply.

								Honza

diff -ru linux-2.6.6-quotactl/fs/dquot.c linux-2.6.6-1-releasefix/fs/dquot.c
--- linux-2.6.6-quotactl/fs/dquot.c	Thu May 13 16:31:35 2004
+++ linux-2.6.6-1-releasefix/fs/dquot.c	Thu May 13 16:32:09 2004
@@ -367,7 +367,8 @@
 	if (atomic_read(&dquot->dq_count) > 1)
 		goto out_dqlock;
 	down(&dqopt->dqio_sem);
-	ret = dqopt->ops[dquot->dq_type]->release_dqblk(dquot);
+	if (dqopt->ops[dquot->dq_type]->release_dqblk)
+		ret = dqopt->ops[dquot->dq_type]->release_dqblk(dquot);
 	clear_bit(DQ_ACTIVE_B, &dquot->dq_flags);
 	up(&dqopt->dqio_sem);
 out_dqlock: