linux-kernel - Re: [PATCH v7 01/26] rust: alloc: add `Allocator` trait

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Message-ID: <ZudUCRYAYpS3U5ky@pollux>
Date: Sun, 15 Sep 2024 23:39:21 +0200
From: Danilo Krummrich <dakr@...nel.org>
To: Gary Guo <gary@...yguo.net>
Cc: ojeda@...nel.org, alex.gaynor@...il.com, wedsonaf@...il.com,
	boqun.feng@...il.com, bjorn3_gh@...tonmail.com,
	benno.lossin@...ton.me, a.hindborg@...sung.com,
	aliceryhl@...gle.com, akpm@...ux-foundation.org,
	daniel.almeida@...labora.com, faith.ekstrand@...labora.com,
	boris.brezillon@...labora.com, lina@...hilina.net,
	mcanal@...lia.com, zhiw@...dia.com, cjia@...dia.com,
	jhubbard@...dia.com, airlied@...hat.com, ajanulgu@...hat.com,
	lyude@...hat.com, linux-kernel@...r.kernel.org,
	rust-for-linux@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v7 01/26] rust: alloc: add `Allocator` trait

On Sun, Sep 15, 2024 at 09:08:27PM +0100, Gary Guo wrote:
> Just to add that if you *really* want to avoid the old layout param,
> another approach accceptable to me is to have a `NonZeroLayout` and have
> `alloc` only accept that.

That is a good idea, I like that.

> 
> Either `Allocator` trait handles ZST well or it refuses to handle them
> at all. No "it works for alloc but not for free" please.

I agree with that, then we shouldn't handle them at all.

> 
> Best,
> Gary
> 
> > > >     
> > > > > 
> > > > > Reviewed-by: Alice Ryhl <aliceryhl@...gle.com>
> > > > > Signed-off-by: Danilo Krummrich <dakr@...nel.org>
> > > > > ---
> > > > >  rust/kernel/alloc.rs | 112 +++++++++++++++++++++++++++++++++++++++++++
> > > > >  1 file changed, 112 insertions(+)  
> > 
>