[ 099/100] Revert "xen/blkback: Dont trust the handle from the frontend."

[Greg Kroah-Hartman]

3.8-stable review patch.  If anyone has any objections, please let me know.

------------------

This reverts commit 01c681d4c70d64cb72142a2823f27c4146a02e63 upstream
(ef56ca64ea733c3b88f0bb74b04da128b1dc35d8 in this tree), as it wasn't
supposed to have been applied to the stable tree.

Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Jan Beulich <jbeulich@xxxxxxxx>
Cc: Ian Campbell <ian.campbell@xxxxxxxxxx>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

---
 drivers/block/xen-blkback/blkback.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -881,6 +881,7 @@ static int dispatch_rw_block_io(struct x
 		goto fail_response;
 	}
 
+	preq.dev           = req->u.rw.handle;
 	preq.sector_number = req->u.rw.sector_number;
 	preq.nr_sects      = 0;
 


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