block: implement is_allocated for raw
Either FIEMAP, or SEEK_DATA+SEEK_HOLE can be used to implement the is_allocated callback for raw files. On Linux ext4, btrfs and XFS all support it. Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
Showing
想要评论请 注册 或 登录