linux-kernel - Re: [PATCH v3 05/10] rust: uaccess: add UserSliceWriter::write_slice

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Message-ID: <CANiq72k8bVMQLVCkwSS24Q6--b155e53tJ7aayTnz5vp0FpzUQ@mail.gmail.com>
Date: Fri, 24 Oct 2025 20:02:18 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Alice Ryhl <aliceryhl@...gle.com>
Cc: Danilo Krummrich <dakr@...nel.org>, gregkh@...uxfoundation.org, rafael@...nel.org, 
	ojeda@...nel.org, alex.gaynor@...il.com, boqun.feng@...il.com, 
	gary@...yguo.net, bjorn3_gh@...tonmail.com, lossin@...nel.org, 
	a.hindborg@...nel.org, tmgross@...ch.edu, mmaurer@...gle.com, 
	rust-for-linux@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 05/10] rust: uaccess: add UserSliceWriter::write_slice_file()

On Thu, Oct 23, 2025 at 1:20 PM Alice Ryhl <aliceryhl@...gle.com> wrote:
>
> I would love to have infallible conversions from usize to u64 (and u32
> to usize), but we can't really modify the stdlib to add them.

I don't have a link at hand now, but we already (recently too, I
think) discussed having these "we know it is infallible in the kernel"
conversions. Maybe there was a patch posted even.

Otherwise, I will create a good first issue.

Cheers,
Miguel