Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) client-ip=2620:137:e000::3:7;
Date:   Wed, 22 Nov 2023 11:27:22 +0000
From:   Mark Brown <broonie@kernel.org>
To:     Vlastimil Babka <vbabka@suse.cz>
Cc:     chengming.zhou@linux.dev, cl@linux.com, penberg@kernel.org,
        rientjes@google.com, iamjoonsoo.kim@lge.com,
        akpm@linux-foundation.org, roman.gushchin@linux.dev,
        42.hyeyoo@gmail.com, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org,
        Chengming Zhou <zhouchengming@bytedance.com>,
        Matthew Wilcox <willy@infradead.org>
Subject: Re: [PATCH v5 6/9] slub: Delay freezing of partial slabs
Message-ID: <ZV3lmlXCBOgbqe3w@finisterre.sirena.org.uk>
References: <20231102032330.1036151-1-chengming.zhou@linux.dev>
 <20231102032330.1036151-7-chengming.zhou@linux.dev>
 <4f3bc1bd-ea87-465d-b58a-0ed57b15187b@sirena.org.uk>
 <83ff4b9e-94f1-8b35-1233-3dd414ea4dfe@suse.cz>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha512;
        protocol="application/pgp-signature"; boundary="1h4O2PMLWdrJT9Mu"
Content-Disposition: inline
In-Reply-To: <83ff4b9e-94f1-8b35-1233-3dd414ea4dfe@suse.cz>
Precedence: bulk


--1h4O2PMLWdrJT9Mu
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

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
>=20
> 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@kernel.org>

Thanks!

--1h4O2PMLWdrJT9Mu
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmVd5ZoACgkQJNaLcl1U
h9CRxwf8D5LmbkdF3hZYr7ZtHbfy5umdIWqn6+wENLFqP5DvsdRvfjS5kcSvTlE6
Rk/R9DR9fCWubOmZkY+N8MU98KhJoDWRu32KOS3zjsMSdhPOuU/Cbv/22k+Ric0a
2I5lJjrrLaoZjLTDBKpxsFVzka4N57+UBzYJYfu+iJz/viEV6DhGEuRBIobCB8uF
27/oHArtUuIzZJ0RDXUFAp39M3VSB+/l0yzXu+x0Jk0Tgwq/MbdfR2e6wwo9LHyK
0zlSYceqQRR0N968Rf6yUy2+fVAUrYNRMNOCrvyKW0gvj6+lPUo4XPM10ShVrz7d
tnmTfwCxPpTR7LJ82VKYBm6YLRrayw==
=Rnlh
-----END PGP SIGNATURE-----

--1h4O2PMLWdrJT9Mu--