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Date:   Fri, 5 May 2023 08:09:41 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Matthew Wilcox <willy@infradead.org>
Cc:     Andreas Hindborg <nmi@metaspace.dk>, Jens Axboe <axboe@kernel.dk>,
        Christoph Hellwig <hch@lst.de>,
        Keith Busch <kbusch@kernel.org>,
        Damien Le Moal <Damien.LeMoal@wdc.com>,
        Hannes Reinecke <hare@suse.de>,
        lsf-pc@lists.linux-foundation.org, rust-for-linux@vger.kernel.org,
        linux-block@vger.kernel.org, Miguel Ojeda <ojeda@kernel.org>,
        Alex Gaynor <alex.gaynor@gmail.com>,
        Wedson Almeida Filho <wedsonaf@gmail.com>,
        Boqun Feng <boqun.feng@gmail.com>, Gary Guo <gary@garyguo.net>,
        =?iso-8859-1?Q?Bj=F6rn?= Roy Baron <bjorn3_gh@protonmail.com>,
        Benno Lossin <benno.lossin@proton.me>,
        open list <linux-kernel@vger.kernel.org>, gost.dev@samsung.com
Subject: Re: [RFC PATCH 01/11] rust: add radix tree abstraction
Message-ID: <20230505060941.GA12147@lst.de>
References: <20230503090708.2524310-1-nmi@metaspace.dk> <20230503090708.2524310-2-nmi@metaspace.dk> <ZFSATHV0gY8raccj@casper.infradead.org> <87wn1ns7kt.fsf@metaspace.dk> <ZFST5HAr6IQAhpjx@casper.infradead.org>
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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..