block: Fix bdrv_is_allocated() return value
bdrv_is_allocated() should return either 0 or 1 in successful cases. We're lucky that currently, the callers that rely on this (e.g. because they check for ret == 1) don't seem to break badly. They just might skip some optimisation or in the case of qemu-io 'map' print separate lines where a single line would suffice. In theory, a wrong allocation status could lead to image corruption with certain operations, so let's fix this quickly. Signed-off-by: NKevin Wolf <kwolf@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
Showing
想要评论请 注册 或 登录