Kevin Wolf dabd18f64c
hw/block: Introduce share-rw qdev property ...
By default, don't allow another writer for block devices that are
attached to a guest device. For the cases where this setup is intended
(e.g. using a cluster filesystem on the disk), the new option can be
used to allow it.
This change affects only devices using DEFINE_BLOCK_PROPERTIES().
Devices directly using DEFINE_PROP_DRIVE() still accept writers
unconditionally.
Signed-off-by: Kevin Wolf <kwolf@redhat.com >
Reviewed-by: Max Reitz <mreitz@redhat.com >
Acked-by: Fam Zheng <famz@redhat.com >
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dabd18f64c