From b91f09f17b2a302f07022e2f766969e2536d71b3 Mon Sep 17 00:00:00 2001
From: Alex Elder <elder@inktank.com>
Date: Fri, 10 May 2013 16:29:22 -0500
Subject: [PATCH] rbd: support reading parent page data for writes

Currently, rbd_img_obj_parent_read_full() assumes the incoming
object request contains bio data.  But if a layered image is part of
a multi-layer stack of images it will result in read requests of
page data to parent images.

This is handling the same kind of issue as was resolved by this
commit:
    5b2ab72d  rbd: support reading parent page data

This resolves:
    http://tracker.ceph.com/issues/5027

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
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Reading git-format-patch failed