linux-kernel - Re: [PATCH] mm: remove all the slab allocators

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Message-ID: <3566797.hdfAi7Kttb@suse>
Date:   Mon, 03 Apr 2023 06:04:12 +0200
From:   "Fabio M. De Francesco" <fmdefrancesco@...il.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     郭辉 <guohui@...ontech.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Linux-MM <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>, patches@...ts.linux.dev
Subject: Re: [PATCH] mm: remove all the slab allocators

On lunedì 3 aprile 2023 05:51:42 CEST Fabio M. De Francesco wrote:
> On Sun, 2 Apr 2023, 13:04 Matthew Wilcox, <willy@...radead.org> wrote:
> > On Sun, Apr 02, 2023 at 05:09:14PM +0800, 郭辉 wrote:
> > > On 4/1/23 5:46 PM, Vlastimil Babka wrote:
> > > > As the SLOB removal is on track and the SLAB removal is planned, I 
have
> > > > realized - why should we stop there and not remove also SLUB? What's a
> > > > slab allocator good for in 2023? The RAM sizes are getting larger and
> > > > the modules cheaper [1]. The object constructor trick was perhaps
> > > > interesting in 1994, but not with contemporary CPUs. So all the slab
> > > > allocator does today is just adding an unnecessary layer of complexity
> > > > over the page allocator.
> > > 
> > > The slab allocator is very core and very important to the Linux kernel.
> > > After the patch is merged into the mainline, it will have a very 
profound
> > > impact on the development of the Linux kernel.
> > 
> > https://en.wikipedia.org/wiki/April_Fools%27_Day
> 
> Wow!
> 
> The most interesting implication of this "patch" is that you noticed that
> some people may actually need the link above to be able to distinguish
> between foolishness and reality...
> 
> Thanks :-)
> 
> Fabio

Ah, I was so shocked that didn't realize was responding with the GMail app 
from the tablet... :-)

Fabio