linux-kernel - Re: [RFC PATCH 03/24] erofs: add Errno in Rust

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Message-ID: <0ca4a948-589a-4e2c-9269-827efb3fb9ef@linux.alibaba.com>
Date: Thu, 26 Sep 2024 09:04:10 +0800
From: Gao Xiang <hsiangkao@...ux.alibaba.com>
To: Ariel Miculas <amiculas@...co.com>
Cc: Benno Lossin <benno.lossin@...ton.me>, Gary Guo <gary@...yguo.net>,
 Yiyang Wu <toolmanp@...p.cc>, rust-for-linux@...r.kernel.org,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 LKML <linux-kernel@...r.kernel.org>, Al Viro <viro@...iv.linux.org.uk>,
 linux-fsdevel@...r.kernel.org, linux-erofs@...ts.ozlabs.org,
 Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [RFC PATCH 03/24] erofs: add Errno in Rust



On 2024/9/26 08:40, Gao Xiang wrote:
> 
> 
> On 2024/9/26 05:45, Ariel Miculas wrote:

...

>>
>> I honestly don't see how it would look good if they're not using the
>> existing filesystem abstractions. And I'm not convinced that Rust in the
>> kernel would be useful in any way without the many subsystem
>> abstractions which were implemented by the Rust for Linux team for the
>> past few years.
> 
> So let's see the next version.

Some more words, regardless of in-tree "fs/xfs/libxfs",
you also claimed "Another goal is to share the same code between user
space and kernel space in order to provide one secure implementation."
for example in [1].

I wonder Rust kernel VFS abstraction is forcely used in your userspace
implementation, or (somewhat) your argument is still broken here.

[1] https://lore.kernel.org/r/20230609-feldversuch-fixieren-fa141a2d9694@brauner

Thanks,
Gao Xiang

> 
> Thanks,
> Gao Xiang
> 
>>
>> Cheers,
>> Ariel
>>