tree c752ee53d1d7265777a3289e5cf63b00ae462244
parent 7e6246670add62116729bd93811e41eb60f66b77
author Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> 1326897641 +0000
committer Kevin Wolf <kwolf@redhat.com> 1327574726 +0100

block: check bdrv_in_use() before blockdev operations

Long-running block operations like block migration and image streaming
must have continual access to their block device.  It is not safe to
perform operations like hotplug, eject, change, resize, commit, or
external snapshot while a long-running operation is in progress.

This patch adds the missing bdrv_in_use() checks so that block migration
and image streaming never have the rug pulled out from underneath them.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>