On 8/27/20 1:13 PM, Sergei Shtepa wrote: > Hello everyone! Requesting for your comments and suggestions. > > We propose new kernel API that should be beneficial for out-of-tree > kernel modules of multiple backup vendors: block layer filter API. That's just a non-starter, I'm afraid. We generally don't carry infrastructure in the kernel for out-of-tree modules, that includes even exports of existing code. If there's a strong use case *in* the kernel, then such functionality could be entertained. -- Jens Axboe