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author	Sage Weil <sage@inktank.com>
	Sat, 16 Jun 2012 00:27:25 +0000 (17:27 -0700)
committer	Sage Weil <sage@inktank.com>
	Tue, 19 Jun 2012 22:08:18 +0000 (15:08 -0700)
commit	3948e0690ee5e5b9e4b8bfadb2120b9bb5e82480
tree	d2b6036e0a11e13747547f2d6afd6529ef2d522a	tree \| snapshot
parent	e8b36ed97ef687f93ec2937da4d19f92c11dc69a	commit \| diff

cls_rbd: handle parent overlap

Two things:

* when we set a parent, the overlap is the min of our size and the
parent's size.
* when we resize, our overlap may shrink.

Signed-off-by: Sage Weil <sage@inktank.com>

src/cls_rbd.cc		diff \| blob \| history
src/test/rbd/test_cls_rbd.cc		diff \| blob \| history

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