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charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: e06f99aa-5c21-4301-a429-08d6c4284c0b X-MS-Exchange-CrossTenant-originalarrivaltime: 18 Apr 2019 18:04:27.5813 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 8ae927fe-1255-47a7-a2af-5f3a069daaa2 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR15MB2598 X-OriginatorOrg: fb.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-04-18_08:,, signatures=0 X-Proofpoint-Spam-Reason: safe X-FB-Internal: Safe 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 Thu, Apr 18, 2019 at 01:34:52PM +0000, Christopher Lameter wrote: > On Wed, 17 Apr 2019, Roman Gushchin wrote: >=20 > > Let's make every page to hold a reference to the kmem_cache (we > > already have a stable pointer), and make kmem_caches to hold a single > > reference to the memory cgroup. >=20 > Ok you are freeing one word in the page struct that can be used for other > purposes now? >=20 Looks so!