--- tmp/drivers/block/ll_rw_blk.c.~1~	Mon Aug  9 00:49:51 1999
+++ tmp/drivers/block/ll_rw_blk.c	Mon Aug  9 00:54:30 1999
@@ -565,7 +565,7 @@
 /* if no request available: if rw_ahead, forget it; otherwise try again blocking.. */
 	if (!req) {
 		if (rw_ahead)
-			goto end_io;
+			goto failed_ahead;
 		req = __get_request_wait(max_req, bh->b_rdev);
 	}
 
@@ -583,6 +583,16 @@
 	add_request(major+blk_dev,req);
 	return;
 
+failed_ahead:
+	switch (rw)
+	{
+	case WRITE:
+		/* nobody can write to a buffer while it's locked */
+		if (test_and_set_bit(BH_Dirty, &bh->b_state))
+			BUG();
+		refile_buffer(bh);
+		break;
+	}
 end_io:
 	bh->b_end_io(bh, test_bit(BH_Uptodate, &bh->b_state));
 }