linux-kernel - Re: [PATCH 0/1] block io layer filters api

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Message-ID: <7a517822-6be2-7d0d-fae3-31472c85f543@kernel.dk>
Date:   Fri, 28 Aug 2020 07:54:35 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Sergei Shtepa <sergei.shtepa@...am.com>, masahiroy@...nel.org,
        michal.lkml@...kovi.net, koct9i@...il.com, jack@...e.cz,
        damien.lemoal@....com, ming.lei@...hat.com, steve@....org,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-block@...r.kernel.org
Subject: Re: [PATCH 0/1] block io layer filters api

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