xfs: remove wrappers around b_iodone

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index a0d97c5..888176a 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -1107,7 +1107,7 @@
 	XFS_BUF_UNDELAYWRITE(bp);
 	XFS_BUF_DONE(bp);
 	XFS_BUF_STALE(bp);
-	XFS_BUF_CLR_IODONE_FUNC(bp);
+	bp->b_iodone = NULL;
 	if (!(fl & XBF_ASYNC)) {
 		/*
 		 * Mark b_error and B_ERROR _both_.