diff -urNp 2.4.19pre9ac2/drivers/block/loop.c 2.4.19pre9ac3/drivers/block/loop.c
--- 2.4.19pre9ac2/drivers/block/loop.c	Thu May 30 18:07:48 2002
+++ 2.4.19pre9ac3/drivers/block/loop.c	Fri May 31 02:10:02 2002
@@ -199,9 +199,9 @@ static int lo_send(struct loop_device *l
 		page = grab_cache_page(mapping, index);
 		if (!page)
 			goto fail;
+		kaddr = kmap(page);
 		if (aops->prepare_write(file, page, offset, offset+size))
 			goto unlock;
-		kaddr = page_address(page);
 		flush_dcache_page(page);
 		transfer_result = lo_do_transfer(lo, WRITE, kaddr + offset, data, size, IV);
 		if (transfer_result) {
@@ -216,6 +216,7 @@ static int lo_send(struct loop_device *l
 			goto unlock;
 		if (transfer_result)
 			goto unlock;
+		kunmap(page);
 		data += size;
 		len -= size;
 		offset = 0;
@@ -228,6 +229,7 @@ static int lo_send(struct loop_device *l
 	return 0;
 
 unlock:
+	kunmap(page);
 	UnlockPage(page);
 	page_cache_release(page);
 fail: