linux-kernel - Re: [RFC PATCH 0/5] add process_madvise() flags to modify behaviour

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Message-ID: <djdcvn3flljlbl7pwyurpdplqxikxy6j2obj6cwcjd4znr6hwj@w3lzlvdibi2i>
Date: Wed, 21 May 2025 09:28:43 -0700
From: Shakeel Butt <shakeel.butt@...ux.dev>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, 
	"Liam R . Howlett" <Liam.Howlett@...cle.com>, David Hildenbrand <david@...hat.com>, 
	Vlastimil Babka <vbabka@...e.cz>, Jann Horn <jannh@...gle.com>, Arnd Bergmann <arnd@...db.de>, 
	Christian Brauner <brauner@...nel.org>, linux-mm@...ck.org, linux-arch@...r.kernel.org, 
	linux-kernel@...r.kernel.org, SeongJae Park <sj@...nel.org>, 
	Usama Arif <usamaarif642@...il.com>
Subject: Re: [RFC PATCH 0/5] add process_madvise() flags to modify behaviour

On Wed, May 21, 2025 at 05:21:19AM +0100, Lorenzo Stoakes wrote:
> On Tue, May 20, 2025 at 03:02:09PM -0700, Shakeel Butt wrote:
> 
[...]
> 
> So, something Liam mentioned off-list was the beautifully named
> 'mmadvise()'. Idea being that we have a system call _explicitly for_
> mm-wide modifications.
> 
> With Barry's series doing a prctl() for something similar, and a whole host
> of mm->flags existing for modifying behaviour, it would seem a natural fit.
> 
> I could do a respin that does something like this instead.
> 

Please let's first get consensus on this before starting the work.

Usama, David, Johannes and others, WDYT?