linux-kernel - Re: [RFC PATCH 4/5] rust: block: add rnull, Rust null

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Date: Sat, 23 Mar 2024 11:33:26 +0000
From: Benno Lossin <benno.lossin@...ton.me>
To: Andreas Hindborg <nmi@...aspace.dk>
Cc: Jens Axboe <axboe@...nel.dk>, Christoph Hellwig <hch@....de>, Keith Busch <kbusch@...nel.org>, Damien Le Moal <Damien.LeMoal@....com>, Bart Van Assche <bvanassche@....org>, Hannes Reinecke <hare@...e.de>, "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>, Andreas Hindborg <a.hindborg@...sung.com>, Niklas Cassel <Niklas.Cassel@....com>, Greg KH <gregkh@...uxfoundation.org>, Matthew Wilcox <willy@...radead.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>, Alice Ryhl <aliceryhl@...gle.com>, Chaitanya Kulkarni <chaitanyak@...dia.com>, Luis Chamberlain <mcgrof@...nel.org>, Yexuan Yang <1182282462@...t.edu.cn>, Sergio González Collado <sergio.collado@...il.com>, Joel Granados <j.granados@...sung.com>, "Pankaj Raghav (Samsung)" <kernel@...kajraghav.com>, Daniel Gomez
	<da.gomez@...sung.com>, open list <linux-kernel@...r.kernel.org>, "rust-for-linux@...r.kernel.org" <rust-for-linux@...r.kernel.org>, "lsf-pc@...ts.linux-foundation.org" <lsf-pc@...ts.linux-foundation.org>, "gost.dev@...sung.com" <gost.dev@...sung.com>
Subject: Re: [RFC PATCH 4/5] rust: block: add rnull, Rust null_blk implementation

On 3/13/24 12:05, Andreas Hindborg wrote:
> +module! {
> +    type: NullBlkModule,
> +    name: "rnull_mod",
> +    author: "Andreas Hindborg",
> +    license: "GPL v2",
> +    params: {
> +        param_memory_backed: bool {
> +            default: true,
> +            permissions: 0,
> +            description: "Use memory backing",
> +        },
> +        // Problems with pin_init when `irq_mode`

Can you elaborate?

-- 
Cheers,
Benno

> +        param_irq_mode: u8 {
> +            default: 0,
> +            permissions: 0,
> +            description: "IRQ Mode (0: None, 1: Soft, 2: Timer)",
> +        },
> +        param_capacity_mib: u64 {
> +            default: 4096,
> +            permissions: 0,
> +            description: "Device capacity in MiB",
> +        },
> +        param_completion_time_nsec: u64 {
> +            default: 1_000_000,
> +            permissions: 0,
> +            description: "Completion time in nano seconds for timer mode",
> +        },
> +        param_block_size: u16 {
> +            default: 4096,
> +            permissions: 0,
> +            description: "Block size in bytes",
> +        },
> +    },
> +}