Remove the line in dispatch_bh() that sets bh->b_dev to B_FREE, since it sets
bh->b_dev to job->disk.dev a few lines later. [Kevin Corry]

--- diff/drivers/md/kcopyd.c	2003-06-17 10:06:36.000000000 +0100
+++ source/drivers/md/kcopyd.c	2003-06-17 10:06:38.000000000 +0100
@@ -336,7 +336,6 @@
 	p = block >> job->bpp_shift;
 	block &= job->bpp_mask;
 
-	bh->b_dev = B_FREE;
 	bh->b_size = job->block_size;
 	set_bh_page(bh, job->pages[p], ((block << job->block_shift) +
 					job->offset) << SECTOR_SHIFT);