Kiyoshi Ueda 598de40947 dm: use clone in map_request function
This patch changes the argument of map_request() to clone request
from original request.  No functional change.

This patch is a preparation for PATCH 9, which needs to use
map_request() for clones sharing an original barrier request.

Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-12-10 23:52:14 +00:00
..
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