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From:   Chuck Lever <chuck.lever@oracle.com>
To:     "mgorman@suse.de" <mgorman@suse.de>,
        "brouer@redhat.com" <brouer@redhat.com>
CC:     Linux NFS Mailing List <linux-nfs@vger.kernel.org>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Fwd: alloc_pages_bulk()
Thread-Topic: alloc_pages_bulk()
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Date:   Mon, 8 Feb 2021 17:50:51 +0000
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Sorry for resending. I misremembered the linux-mm address.


> Begin forwarded message:
>=20
> From: Chuck Lever <chuck.lever@oracle.com>
> Subject: alloc_pages_bulk()
> Date: February 8, 2021 at 10:42:07 AM EST
> To: "mgorman@suse.de" <mgorman@suse.de>, "brouer@redhat.com" <brouer@redh=
at.com>
> Cc: "linux-mm@vger.kernel.org" <linux-mm@vger.kernel.org>, Linux NFS Mail=
ing List <linux-nfs@vger.kernel.org>
>=20
> Hi-
>=20
> [ please Cc: me, I'm not subscribed to linux-mm ]
>=20
> We've been discussing how NFSD can more efficiently refill its
> receive buffers (currently alloc_page() in a loop; see
> net/sunrpc/svc_xprt.c::svc_alloc_arg()).
>=20
> Neil Brown pointed me to this old thread:
>=20
> https://lore.kernel.org/lkml/20170109163518.6001-1-mgorman@techsingularit=
y.net/
>=20
> We see that many of the prerequisites are in v5.11-rc, but
> alloc_page_bulk() is not. I tried forward-porting 4/4 in that
> series, but enough internal APIs have changed since 2017 that
> the patch does not come close to applying and compiling.
>=20
> I'm wondering:
>=20
> a) is there a newer version of that work?
>=20
> b) if not, does there exist a preferred API in 5.11 for bulk
> page allocation?
>=20
> Many thanks for any guidance!
>=20
> --
> Chuck Lever
>=20
>=20
>=20

--
Chuck Lever