3.8-stable review patch. If anyone has any objections, please let me know.
------------------
From: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
commit 01c681d4c70d64cb72142a2823f27c4146a02e63 upstream.
The 'handle' is the device that the request is from. For the life-time
of the ring we copy it from a request to a response so that the frontend
is not surprised by it. But we do not need it - when we start processing
I/Os we have our own 'struct phys_req' which has only most essential
information about the request. In fact the 'vbd_translate' ends up
over-writing the preq.dev with a value from the backend.
This assignment of preq.dev with the 'handle' value is superfluous
so lets not do it.
Acked-by: Jan Beulich <jbeul...@suse.com>
Acked-by: Ian Campbell <ian.campb...@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/block/xen-blkback/blkback.c | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -879,7 +879,6 @@ 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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