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Date: Mon, 18 Aug 2025 16:18:35 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Ryosuke Yasuoka <ryasuoka@redhat.com>
Cc: arnd@arndb.de, ojeda@kernel.org, alex.gaynor@gmail.com,
	boqun.feng@gmail.com, gary@garyguo.net, bjorn3_gh@protonmail.com,
	lossin@kernel.org, a.hindborg@kernel.org, aliceryhl@google.com,
	tmgross@umich.edu, dakr@kernel.org, lee@kernel.org,
	rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH rust-next 0/2] Add llseek support to miscdevice and
 samples
Message-ID: <2025081818-presume-coral-25c3@gregkh>
References: <20250818135846.133722-1-ryasuoka@redhat.com>
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In-Reply-To: <20250818135846.133722-1-ryasuoka@redhat.com>

On Mon, Aug 18, 2025 at 10:58:37PM +0900, Ryosuke Yasuoka wrote:
> This patch series introduces support for the llseek file operation to
> the Rust miscdevice abstraction.
> 
> The first patch, rust: miscdevice: add llseek support, extends the
> MiscDevice trait with a new llseek method.
> 
> The second patch, rust: samples: miscdevice: add lseek samples, add a
> simple example of how to use the new llseek feature. As currently the
> MiscDevice trait does not support any read/write file operation yet, the
> sample is fundamental one.

As read/write isn't there yet, why is llseek needed just yet?

thanks,

greg k-h