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From: Ryan Harper <ryanh@us.ibm.com>
Date: Mon, 25 Oct 2010 13:22:33 -0500
Message-Id: <1288030956-28383-1-git-send-email-ryanh@us.ibm.com>
Subject: [Qemu-devel] [PATCH 0/3] v4 Decouple block device removal from
	device removal
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To: qemu-devel@nongnu.org
Cc: Stefan Hajnoczi <stefan.hajnoczi@uk.ibm.com>, Anthony Liguori <aliguori@linux.vnet.ibm.com>, Ryan Harper <ryanh@us.ibm.com>, Kevin Wolf <kwolf@redhat.com>

This patch series decouples the detachment of a block device from the removal
of the backing pci-device.  Removal of a hotplugged pci device requires the
guest to respond before qemu tears down the block device. In some cases, the
guest may not respond leaving the guest with continued access to the block
device.  

The new monitor command, drive_unplug, will revoke a guests access to the
block device independently of the removal of the pci device.

The first patch adds a new drive find method, the second patch implements the
monitor command and block layer changes.

Changes since v3:
- Moved QMP command for drive_unplug() to separate patch

Changes since v2:
- Added QMP command for drive_unplug()

Changes since v1:
- CodingStyle fixes
- Added qemu_aio_flush() to bdrv_unplug()

Signed-off-by: Ryan Harper <ryanh@us.ibm.com>