linux-kernel - Re: [PATCH] mm: Add new vma flag VM_LOCAL

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Message-ID: <c07e1d43-598e-ac20-316d-64f6b6a0a4c7@netapp.com>
Date:   Tue, 15 May 2018 17:30:43 +0300
From:   Boaz Harrosh <boazh@...app.com>
To:     Matthew Wilcox <willy@...radead.org>,
        Boaz Harrosh <boazh@...app.com>
CC:     Jeff Moyer <jmoyer@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, <x86@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Rik van Riel <riel@...hat.com>, Jan Kara <jack@...e.cz>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        Amit Golander <Amit.Golander@...app.com>
Subject: Re: [PATCH] mm: Add new vma flag VM_LOCAL_CPU

On 15/05/18 17:18, Matthew Wilcox wrote:
> On Tue, May 15, 2018 at 05:10:57PM +0300, Boaz Harrosh wrote:
>> I'm not a lawyer either but I think I'm doing OK. Because I am doing exactly
>> like FUSE is doing. Only some 15 years later, with modern CPUs in mind. I do not
>> think I am doing anything new here, am I?
> 
> You should talk to a lawyer.  I'm not giving you legal advice.
> I'm telling you that I think what you're doing is unethical.
> .
> 

Not more unethical than what is already there. And I do not see how
this is unethical at all? I trust your opinion and would really want
to understand.

For example your not-in-c zero-copy Server. How is it unethical?
I have the same problem actually some important parts are not in C.

How is it unethical to want to make this run fast?

Thanks
Boaz