Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   David Laight <David.Laight@ACULAB.COM>
To:     'Pavel Tatashin' <pasha.tatashin@gmail.com>,
        Alexander Duyck <alexander.h.duyck@linux.intel.com>,
        Michal Hocko <mhocko@kernel.org>
CC:     "linux-mm@kvack.org" <linux-mm@kvack.org>,
        "akpm@linux-foundation.org" <akpm@linux-foundation.org>,
        "pavel.tatashin@microsoft.com" <pavel.tatashin@microsoft.com>,
        "dave.jiang@intel.com" <dave.jiang@intel.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "willy@infradead.org" <willy@infradead.org>,
        "davem@davemloft.net" <davem@davemloft.net>,
        "yi.z.zhang@linux.intel.com" <yi.z.zhang@linux.intel.com>,
        "khalid.aziz@oracle.com" <khalid.aziz@oracle.com>,
        "rppt@linux.vnet.ibm.com" <rppt@linux.vnet.ibm.com>,
        "vbabka@suse.cz" <vbabka@suse.cz>,
        "sparclinux@vger.kernel.org" <sparclinux@vger.kernel.org>,
        "dan.j.williams@intel.com" <dan.j.williams@intel.com>,
        "ldufour@linux.vnet.ibm.com" <ldufour@linux.vnet.ibm.com>,
        "mgorman@techsingularity.net" <mgorman@techsingularity.net>,
        "mingo@kernel.org" <mingo@kernel.org>,
        "kirill.shutemov@linux.intel.com" <kirill.shutemov@linux.intel.com>
Subject: RE: [mm PATCH v3 1/6] mm: Use mm_zero_struct_page from SPARC on all
 64b architectures
Thread-Topic: [mm PATCH v3 1/6] mm: Use mm_zero_struct_page from SPARC on all
 64b architectures
Thread-Index: AQHUZivJtg+QWoUX/US9F2ZPoC/HcaUjkqFQ
Date:   Wed, 17 Oct 2018 15:40:25 +0000
Message-ID: <7d313318f1234a1eb45b608bd853c17c@AcuMS.aculab.com>
References: <20181015202456.2171.88406.stgit@localhost.localdomain>
 <20181015202656.2171.92963.stgit@localhost.localdomain>
 <20181017084744.GH18839@dhcp22.suse.cz>
 <9700b00f-a8a4-e318-f6a8-71fd1e7021b3@linux.intel.com>
 <8aaa0fa2-5f12-ea3c-a0ca-ded9e1a639e2@gmail.com>
In-Reply-To: <8aaa0fa2-5f12-ea3c-a0ca-ded9e1a639e2@gmail.com>
Accept-Language: en-GB, en-US
Content-Language: en-US
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: base64
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
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=