linux-kernel - Re: [RFC PATCH 2/2] zsmalloc: chain-length configuration should consider other metrics

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Message-ID: <7q5gqpfshnc3lfhzxughpks3fc2knw2delpm5io2oe54monydl@5isuxnjputjr>
Date: Tue, 6 Jan 2026 13:22:45 +0900
From: Sergey Senozhatsky <senozhatsky@...omium.org>
To: Sergey Senozhatsky <senozhatsky@...omium.org>
Cc: Yosry Ahmed <yosry.ahmed@...ux.dev>, 
	Andrew Morton <akpm@...ux-foundation.org>, Nhat Pham <nphamcs@...il.com>, Minchan Kim <minchan@...nel.org>, 
	Johannes Weiner <hannes@...xchg.org>, Brian Geffon <bgeffon@...gle.com>, linux-kernel@...r.kernel.org, 
	Herbert Xu <herbert@...dor.apana.org.au>, linux-mm@...ck.org
Subject: Re: [RFC PATCH 2/2] zsmalloc: chain-length configuration should
 consider other metrics

On (26/01/06 13:20), Sergey Senozhatsky wrote:
[..]
> > I am not sure tbh, adding Herbert here. I remember looking at the code
> > in scomp_acomp_comp_decomp() at some point, and I think it will take
> > care of non-contiguous SG-lists. Not sure if that's the correct place to
> > look tho.
> 
> Ah, so it does kmap under the hood.  I suppose that can work.

I'm hallucinating, sorry.  Yeah, let's hear from Herbert what's
the direction here.