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received-spf: None (protection.outlook.com: fb.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: rsh/zREWdnpnt6yzzvA+ek9c7XqLQmdNyxAsy6SBSzWOHw3C1rfbo5xws1kEApNsyfHg3B1XbpdbfiKpPJBA/nBT6SaAYCawEMGfOTsz4bHY2J2Lb4p/oCBBT+kab/2dfNbRIuE9J0QTd1TPFVDLwAzmAduFmZUrFQIsSM+03ft4MrUHCDP/gJJ9HK/kCqbLSaMF/tWixj1bAOVGP2irjdOKIySdRlgfgJ5c1oOVCNCbF4dpHSIpj5HpKoEI+M+RtIONRFnFJPggJFjkOvXz8F1b7AA4GkLBrAtjldbGngxZSqTVBqYIbacn9yS1dHpcGUo8OuyvNAr2mF3yCX3vd28TutIGZW0kUVczJvTIhB6czfi0pPJ6EBtwK85NcxN1ByfIIswMkNWYcFnaaoIJku3iHT8zRB4O9M5eR/fgEy8= Content-Type: text/plain; charset="us-ascii" Content-ID: <6EA09F38CD4C0848B5AE2A551FF94BB4@namprd15.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 307ae225-93bb-4f8b-dca1-08d6986927ba X-MS-Exchange-CrossTenant-originalarrivaltime: 22 Feb 2019 01:57:51.8424 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-id: 8ae927fe-1255-47a7-a2af-5f3a069daaa2 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR15MB3383 X-OriginatorOrg: fb.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-02-22_02:,, 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, Feb 21, 2019 at 08:48:27PM -0500, Rik van Riel wrote: > On Thu, 2019-02-21 at 17:46 -0500, Roman Gushchin wrote: > > On Wed, Feb 20, 2019 at 06:27:07PM +1100, Dave Chinner wrote: > > > On Wed, Feb 20, 2019 at 04:50:31PM +1100, Dave Chinner wrote: > > > > I'm just going to fix the original regression in the shrinker > > > > algorithm by restoring the gradual accumulation behaviour, and > > > > this > > > > whole series of problems can be put to bed. > > >=20 > > > Something like this lightly smoke tested patch below. It may be > > > slightly more agressive than the original code for really small > > > freeable values (i.e. < 100) but otherwise should be roughly > > > equivalent to historic accumulation behaviour. > > >=20 > > > Cheers, > > >=20 > > > Dave. > > > --=20 > > > Dave Chinner > > > david@fromorbit.com > > >=20 > > > mm: fix shrinker scan accumulation regression > > >=20 > > > From: Dave Chinner > >=20 > > JFYI: I'm testing this patch in our environment for fixing > > the memcg memory leak. > >=20 > > It will take a couple of days to get reliable results. >=20 > Just to clarify, is this test with fls instead of ilog2, > so the last item in a slab cache can get reclaimed as > well? I'm testing both version. Thanks!