linux-kernel - Re: [PATCH v2] kpageflags: respect folio head-page flag placement

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Message-ID: <ZUwauTb/MqvyUEfI@memverge.com>
Date:   Wed, 8 Nov 2023 18:33:13 -0500
From:   Gregory Price <gregory.price@...verge.com>
To:     Kefeng Wang <wangkefeng.wang@...wei.com>
Cc:     Matthew Wilcox <willy@...radead.org>,
        Gregory Price <gourry.memverge@...il.com>, linux-mm@...ck.org,
        akpm@...ux-foundation.org, david@...hat.com, vbabka@...e.cz,
        naoya.horiguchi@...ux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] kpageflags: respect folio head-page flag placement

On Wed, Nov 08, 2023 at 10:01:19AM +0800, Kefeng Wang wrote:
> 
> Yes, I see your "Node Weights and Weighted Interleave", this is an
> interesting topic, we need some easy and efficient way to use tiered
> memory.
> 

There will be an LPC talk on it next week in the CXL track, presented
by another group that's been testing it.  Please tune in!

> > 
> > There's only a handful, so yeah the best way is probably to go ahead and
> > swap k = page->flags for k = *folio_flags(folio, 0) and then handle the
> > couple of outliars.
> 
> If you don't mind, I maybe try to convert it in my changes.
> 

Please feel free! I am happy to help test, CC me on subsequent patches
please!

~Gregory