linux-kernel - Re: [RFC PATCH 01/11] rust: add radix tree abstraction

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Date:   Fri, 5 May 2023 08:09:41 +0200
From:   Christoph Hellwig <hch@....de>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Andreas Hindborg <nmi@...aspace.dk>, Jens Axboe <axboe@...nel.dk>,
        Christoph Hellwig <hch@....de>,
        Keith Busch <kbusch@...nel.org>,
        Damien Le Moal <Damien.LeMoal@....com>,
        Hannes Reinecke <hare@...e.de>,
        lsf-pc@...ts.linux-foundation.org, rust-for-linux@...r.kernel.org,
        linux-block@...r.kernel.org, Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        Benno Lossin <benno.lossin@...ton.me>,
        open list <linux-kernel@...r.kernel.org>, gost.dev@...sung.com
Subject: Re: [RFC PATCH 01/11] rust: add radix tree abstraction

On Fri, May 05, 2023 at 06:28:04AM +0100, Matthew Wilcox wrote:
> But the radix tree API is simply a different (and worse) API to the
> exact same data structure as the XArray.  Using the XArray instead of
> the radix tree is still an apples-to-apples comparison.

And if he wants to do a 1:1 comparism, just convert null_blk to
xarray, which would actually be more useful work than this whole
thread..