block: Deprecate "backing": ""
commit4f7be2806e672fa232e406ac5eec26789b9d5f85
authorMax Reitz <mreitz@redhat.com>
Sat, 24 Feb 2018 15:40:33 +0000 (24 16:40 +0100)
committerEric Blake <eblake@redhat.com>
Mon, 19 Mar 2018 19:58:36 +0000 (19 14:58 -0500)
treeae82d86210521ff3a214b1b6102ef5c43d72e954
parente59a0cf17b1b9932b65e6fc25d6856976f5e4831
block: Deprecate "backing": ""

We have a clear replacement, so let's deprecate it.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20180224154033.29559-8-mreitz@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
block.c
qapi/block-core.json
qemu-doc.texi
qemu-options.hx