ocfs2: add quota call to ocfs2_remove_btree_range()

We weren't reclaiming the clusters which get free'd from this function,
so any user punching holes in a file would still have those bytes accounted
against him/her. Add the call to vfs_dq_free_space_nodirty() to fix this.
Interestingly enough, the journal credits calculation already took this into
account.

Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Acked-by: Jan Kara <jack@suse.cz>
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index d861096c..60fe74035 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -5390,6 +5390,9 @@
 		goto out;
 	}
 
+	vfs_dq_free_space_nodirty(inode,
+				  ocfs2_clusters_to_bytes(inode->i_sb, len));
+
 	ret = ocfs2_remove_extent(inode, et, cpos, len, handle, meta_ac,
 				  dealloc);
 	if (ret) {