When I said "Final re-send," I was lying. Here's a v5.
The title is also a misnomer by now :)

The move to blk_flush altered the behavior of migration and flushing
nodes that are not reachable via the guest, but are still reachable
via QEMU and may or may not need to be flushed.

This is intended for 2.6.2 and/or 2.7.1, to fix problems with libvirt
et al being unable to migrate QEMU when the CDROM tray is open.

 Fix bracket spacing in patch 1. By one space. :(
 Added third patch to remove blk_flush_all.

 Commit message update.

 Reworking approach and reinstating bdrv_flush_all at Kevin's suggestion.


For convenience, this branch is available at:
https://github.com/jnsnow/qemu.git branch atapi-tray-migfix

This version is tagged atapi-tray-migfix-v5:

John Snow (3):
  block: reintroduce bdrv_flush_all
  qemu: use bdrv_flush_all for vm_stop et al
  block-backend: remove blk_flush_all

 block/block-backend.c          | 22 ----------------------
 block/io.c                     | 25 +++++++++++++++++++++++++
 cpus.c                         |  4 ++--
 hw/i386/xen/xen_platform.c     |  2 --
 hw/ide/piix.c                  |  4 ++++
 include/block/block.h          |  1 +
 include/sysemu/block-backend.h |  1 -
 7 files changed, 32 insertions(+), 27 deletions(-)


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