linux-kernel - Re: [RFC PATCH v2 00/18] Virtual Swap Space

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Message-ID: <CAKEwX=Mea5V6CKcGuQrYfCQAKErgbje1s0fThjkgCwZXgF-d2A@mail.gmail.com>
Date: Tue, 29 Apr 2025 16:51:36 -0700
From: Nhat Pham <nphamcs@...il.com>
To: linux-mm@...ck.org
Cc: akpm@...ux-foundation.org, hannes@...xchg.org, hughd@...gle.com, 
	yosry.ahmed@...ux.dev, mhocko@...nel.org, roman.gushchin@...ux.dev, 
	shakeel.butt@...ux.dev, muchun.song@...ux.dev, len.brown@...el.com, 
	chengming.zhou@...ux.dev, kasong@...cent.com, chrisl@...nel.org, 
	huang.ying.caritas@...il.com, ryan.roberts@....com, viro@...iv.linux.org.uk, 
	baohua@...nel.org, osalvador@...e.de, lorenzo.stoakes@...cle.com, 
	christophe.leroy@...roup.eu, pavel@...nel.org, kernel-team@...a.com, 
	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org, 
	linux-pm@...r.kernel.org, peterx@...hat.com
Subject: Re: [RFC PATCH v2 00/18] Virtual Swap Space

On Tue, Apr 29, 2025 at 4:38 PM Nhat Pham <nphamcs@...il.com> wrote:
>
> Changelog:
> * v2:
>         * Use a single atomic type (swap_refs) for reference counting
>           purpose. This brings the size of the swap descriptor from 64 KB
>           down to 48 KB (25% reduction). Suggested by Yosry Ahmed.

bytes, not kilobytes. 48KB would be an INSANE overhead :)

Apologies for the brainfart.