linux-kernel - Re: [PATCH v5 6/9] slub: Delay freezing of partial slabs

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Message-ID: <ZV3lmlXCBOgbqe3w@finisterre.sirena.org.uk>
Date:   Wed, 22 Nov 2023 11:27:22 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Vlastimil Babka <vbabka@...e.cz>
Cc:     chengming.zhou@...ux.dev, cl@...ux.com, penberg@...nel.org,
        rientjes@...gle.com, iamjoonsoo.kim@....com,
        akpm@...ux-foundation.org, roman.gushchin@...ux.dev,
        42.hyeyoo@...il.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        Chengming Zhou <zhouchengming@...edance.com>,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH v5 6/9] slub: Delay freezing of partial slabs

On Wed, Nov 22, 2023 at 10:37:39AM +0100, Vlastimil Babka wrote:

> Can you try this, please?

> Subject: [PATCH] mm/slub: try to fix hangs without cmpxchg64/128
> 
> If we don't have cmpxchg64/128 and resort to slab_lock()/slab_unlock()
> which uses PG_locked, we can get RMW with the newly introduced
> slab_set/clear_node_partial() operation that modify PG_workingset so all
> the operations have to be atomic now.

That seems to resolve the issue:

  https://validation.linaro.org/scheduler/job/4018096

Tested-by: Mark Brown <broonie@...nel.org>

Thanks!

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