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Message-ID: <ZyT5qROhtuWeuxga@casper.infradead.org>
Date: Fri, 1 Nov 2024 15:54:17 +0000
From: Matthew Wilcox <willy@...radead.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Kinsey Ho <kinseyho@...gle.com>, Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...nel.org>,
	Roman Gushchin <roman.gushchin@...ux.dev>,
	Shakeel Butt <shakeel.butt@...ux.dev>,
	Muchun Song <muchun.song@...ux.dev>,
	Pasha Tatashin <pasha.tatashin@...een.com>,
	David Rientjes <rientjes@...gle.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	David Hildenbrand <david@...hat.com>,
	Joel Granados <joel.granados@...nel.org>,
	Kaiyang Zhao <kaiyang2@...cmu.edu>,
	Sourav Panda <souravpanda@...gle.com>, linux-kernel@...r.kernel.org,
	cgroups@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH mm-unstable v1 0/2] Track pages allocated for struct

On Thu, Oct 31, 2024 at 04:06:04PM -0700, Andrew Morton wrote:
> Possibly dumb question: can we switch swap_cgroup_prepare to kmalloc()
> (or kmem-cache_alloc()) and use slab's accounting to satisfy this
> requirement?

It looks to me like a bad reimplemention of vmalloc().  It looks like
this code used to make more sense once upon a time, but now it's really
just vmalloc().  Or did I miss something?

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