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[216.228.121.65]) by mx.google.com with ESMTPS id z2si313920ybn.84.2019.05.23.18.05.05 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 23 May 2019 18:05:05 -0700 (PDT) Received-SPF: pass (google.com: domain of jhubbard@nvidia.com designates 216.228.121.65 as permitted sender) client-ip=216.228.121.65; Authentication-Results: mx.google.com; dkim=pass header.i=@nvidia.com header.s=n1 header.b=Gj9MdXQb; spf=pass (google.com: domain of jhubbard@nvidia.com designates 216.228.121.65 as permitted sender) smtp.mailfrom=jhubbard@nvidia.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=nvidia.com Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Thu, 23 May 2019 18:05:05 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Thu, 23 May 2019 18:05:04 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Thu, 23 May 2019 18:05:04 -0700 Received: from [10.110.48.28] (10.124.1.5) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 24 May 2019 01:05:04 +0000 Subject: Re: [PATCH] mm/swap: Fix release_pages() when releasing devmap pages To: , Andrew Morton CC: Michal Hocko , , , =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= , Dan Williams References: <20190523223746.4982-1-ira.weiny@intel.com> X-Nvconfidentiality: public From: John Hubbard Message-ID: <2ac0f1cd-f076-a007-8152-c136efe60694@nvidia.com> Date: Thu, 23 May 2019 18:05:04 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: <20190523223746.4982-1-ira.weiny@intel.com> X-Originating-IP: [10.124.1.5] X-ClientProxiedBy: HQMAIL104.nvidia.com (172.18.146.11) To HQMAIL107.nvidia.com (172.20.187.13) Content-Type: text/plain; charset="utf-8" Content-Language: en-US-large Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1558659905; bh=SN+7sL6HemPw2Et2gfO0Vw1ZlZItZYzsD2goYpEBJkQ=; h=X-PGP-Universal:Subject:To:CC:References:X-Nvconfidentiality:From: Message-ID:Date:User-Agent:MIME-Version:In-Reply-To: X-Originating-IP:X-ClientProxiedBy:Content-Type:Content-Language: Content-Transfer-Encoding; b=Gj9MdXQbZ92cf7d41CUN+4e4JgAd2OYEpYqtn9+DSHMZIHT2a89BP7cO7AJbww848 Gx1ff+u3rLKJ+u2iuzhZo6i71uD/IpTovz3DtAXHHXGr5eduHw0WOWHSymxu1I9sSC 2sK7fUvvh1ARhTRpzYNLkhJBtbkyy+iakzhdSuSPhpkaUihk6GETp+YO4afjypqm0n JmzQvP/2isAa/oslMGAt+I4mOz9884vn+diqq8S8Xy28UzPI5HA07tdGkSPGbdPmmC 40FqdTOgYLKi3RD1jtB1TCyLl0aAcpMHXJ4TuF5cxXSMZVR44dHPQZQT7q85oXegJp CNFSuPvIjPopg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 5/23/19 3:37 PM, ira.weiny@intel.com wrote: > From: Ira Weiny >=20 > Device pages can be more than type MEMORY_DEVICE_PUBLIC. >=20 > Handle all device pages within release_pages() >=20 > This was found via code inspection while determining if release_pages() > and the new put_user_pages() could be interchangeable. >=20 > Cc: J=C3=A9r=C3=B4me Glisse > Cc: Dan Williams > Cc: Michal Hocko > Cc: John Hubbard > Signed-off-by: Ira Weiny > --- > mm/swap.c | 7 +++---- > 1 file changed, 3 insertions(+), 4 deletions(-) >=20 > diff --git a/mm/swap.c b/mm/swap.c > index 3a75722e68a9..d1e8122568d0 100644 > --- a/mm/swap.c > +++ b/mm/swap.c > @@ -739,15 +739,14 @@ void release_pages(struct page **pages, int nr) > if (is_huge_zero_page(page)) > continue; > =20 > - /* Device public page can not be huge page */ > - if (is_device_public_page(page)) { > + if (is_zone_device_page(page)) { > if (locked_pgdat) { > spin_unlock_irqrestore(&locked_pgdat->lru_lock, > flags); > locked_pgdat =3D NULL; > } > - put_devmap_managed_page(page); > - continue; > + if (put_devmap_managed_page(page)) > + continue; > } > =20 > page =3D compound_head(page); >=20 Reviewed-by: John Hubbard thanks, --=20 John Hubbard NVIDIA