[Xen-devel] [PATCH 06 of 12] blktap2: fix blkback/blktap2 interaction

[Daniel Stodden <daniel.stodden@xxxxxxxxxx>]

blkback's page map code needs to be accessible to both blkback and
blktap2, irrespective of whether either or both are modules. The
most immediate solution is to break it out into a separate, library-
like component that doesn't need building if either of the two
consumers is configured off, and that gets built as a module if both
consumers are modules.

Also fix the dummy implementation of blkback_pagemap_read(), since
using BUG() there doesn't compile.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>

linux-2.6-git:
 * adjust XEN_BLKBACK_PAGEMAP dependencies
 * rebase against git-fbbc8527 (wean off of use of the BlkBack pageflag)

Signed-off-by: Daniel Stodden <daniel.stodden@xxxxxxxxxx>

Attachment: linux-2.6.18-xen.hg-894.4e5cd2fc45a7.diff
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