Received-SPF: pass (google.com: domain of linux-nfs+bounces-2466-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
From: Chuck Lever III <chuck.lever@oracle.com>
To: Linux NFS Mailing List <linux-nfs@vger.kernel.org>
Subject: long-term stable backports of NFSD patches
Thread-Topic: long-term stable backports of NFSD patches
Thread-Index: AQHafsjeT4IvZQU5jkWS/G+xq+WiBg==
Date: Mon, 25 Mar 2024 15:26:55 +0000
Message-ID: <AF554C7A-F307-47D5-B417-7F311F94BBFB@oracle.com>
Accept-Language: en-US
Content-Language: en-US
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: 
 =?us-ascii?Q?kwdoimzpYde61bHXDN9nI8CtpUNQaQI5Kg6ZAUGEWanICDaV0RQQIPZG/NAP?=
 =?us-ascii?Q?6aSGjrjVDMrA8KGiKhthcTiIcBTwKzpNcjZ8wB70wjpTM3iisAhv9XdIxhb/?=
 =?us-ascii?Q?sZi/uZT2rG5Xu6XNR8EQ68efEGY1YU7/6HkZrkhWOJUZALhS3ElHJ8GNnpkA?=
 =?us-ascii?Q?I7AMwf5Zof6WzU6PKjoYSBb9EK+mMGkGMnz4j82LjPiN9lpdYEIz6H3QnqjK?=
 =?us-ascii?Q?SO/YOZS4MQVhrecOFTJ9PU01QVkXuwFEhsdrcHunMQEgNzbClHHtSSUer6VI?=
 =?us-ascii?Q?fNfZ49JkSV50snH2HzPY1F51tU8iMmCSFHbSaO5v7o/YSnwcXhS7uj42afPC?=
 =?us-ascii?Q?WW+R/9mgiK1jObyifCPhqZMwXxBqrsb2QdryjRHcoNZtIZaLvr5preD8U60v?=
 =?us-ascii?Q?LJSVEGG/NTs0BeDnHg9nFR6O9wlVPhRa2FRw7WKyWsUjW9RZh07LGvp6jazc?=
 =?us-ascii?Q?EagYDh+vzz2cvzXwP9k0cso8jM8SAXuRg60LfroOBdY5fYRwi3FnhTWMdeYT?=
 =?us-ascii?Q?FsFGYgJJcbmehib1dmcqloFVAzFpgkfJ88ZOK1jtWbuyQaxIRhnaNqLIAuRq?=
 =?us-ascii?Q?+fgphDqk93I514I6TuhzZIc4RXHiuGC5/Iy8OeZ2A2HPNT/qYpxLZRr9cgLT?=
 =?us-ascii?Q?/apz9Z0J+TiBJS/wQrw5ZLdHSBBVWrJ3Q8ZowkJsDWeU08d3afqTOQcaNWQd?=
 =?us-ascii?Q?2q7OD5LtKyYpIegVl/EA2xTGP2f/2g4G4U0ZM1oX/zcKBOzOgOfSmHvjO628?=
 =?us-ascii?Q?UmBC+yFID25CqOZ7B7oLmDZyK2R6oC6E12cbtoiXjJexyAhAb1vuUZsSbr/3?=
 =?us-ascii?Q?oxv0ZjOOpeqEStFXCnRSEf8tG5qLf/LsqAvnbvRruY5bsN/LuYQQ1abRyDWm?=
 =?us-ascii?Q?OxiAVPttR02/Nhvz0rHR6pXdDCHCAN4VOxndiqVmPoHsmJp1gV9miOo2P7Yo?=
 =?us-ascii?Q?yFOM3yNy1NW8tV1DS++qKWbdGA1QZtxvUNwLnhauMs9K4uUPJVdl6OIL39Za?=
 =?us-ascii?Q?EU+FrZTHFgNpXZva7tRnMdmgDqP7qqAKZ9p3ScmjqEdZWvVxVGKDgGMLlWuu?=
 =?us-ascii?Q?TxZJ6BXNyI+Ul0x9lUePpa5VPDVC1ykt7n4YWf2rrnofcDXA9i2e02IifUMh?=
 =?us-ascii?Q?9lDUxxfHzGQQzfLsDAMnusWGXn1ssJXrl6DoH6TKYPfp4eB80fQcDvC64I5F?=
 =?us-ascii?Q?wd+JJp9bAloip+JbJTNzqdlbLSqR/a9V1R1Ptrgi26GE5XLRHC7ebxKZ8+sO?=
 =?us-ascii?Q?KcdTzqit8p+QKKi4b/iYgd9iXBnbhchnKTGkP5qoUSmlr7H8CQp1N8LVlTiX?=
 =?us-ascii?Q?mA6YJGy+efkStEPs9i0UPOJ5F9hOqZSrJ/v+Plp9AGt5daKAkxJpGfnU8RyN?=
 =?us-ascii?Q?RmjqSS7naio+rU7Grdjmssx1E2sZdiWzWSs4pR3/gz5voAzBf4Y7fBEQ7kwk?=
 =?us-ascii?Q?I2qO00GKjrzzmr046+9x9HbKpxBa0jfB9uMZSkOw36LoXZgex9pkuYXng5mZ?=
 =?us-ascii?Q?4DZtxdx56FFkYxKsbRiFsAclbkm5Pw6/dOljmkdQ4h+8oDCwGsE7Cm+2X6g6?=
 =?us-ascii?Q?MY0tRlf+shWclKLMy2HQl8ZXsvaFOEDNUxCKXHxBD0LcBQgKvll9zhjM+NEb?=
 =?us-ascii?Q?Gg=3D=3D?=
Content-Type: text/plain; charset="us-ascii"
Content-ID: <947E74B81EA8784A8D8228E770AAF261@namprd10.prod.outlook.com>
Content-Transfer-Encoding: quoted-printable
Precedence: bulk
X-Mailing-List: linux-nfs@vger.kernel.org
List-Id: <linux-nfs.vger.kernel.org>
List-Subscribe: <mailto:linux-nfs+subscribe@vger.kernel.org>
List-Unsubscribe: <mailto:linux-nfs+unsubscribe@vger.kernel.org>
MIME-Version: 1.0
X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 
	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
X-OriginatorOrg: oracle.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: BN0PR10MB5128.namprd10.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 4f35fe8d-939a-4b61-af03-08dc4ce00141
X-MS-Exchange-CrossTenant-originalarrivaltime: 25 Mar 2024 15:26:55.6624
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: qIDvgKfG9hJp3X/JcSgvA9V1oIvJoy3TdYhCElBcJouO53fPJFoEewcQUvgxEgWFBGIat95k0h5/ry5nCIRbAw==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BLAPR10MB4945
X-Proofpoint-Virus-Version: vendor=baseguard
 engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26
 definitions=2024-03-25_12,2024-03-21_02,2023-05-22_02
X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 phishscore=0
 bulkscore=0 spamscore=0 adultscore=0 mlxscore=0 suspectscore=0
 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1
 engine=8.12.0-2403210000 definitions=main-2403250085
X-Proofpoint-GUID: GX2yEmyF5hZF8068qXdpSStdw4GGNTcP
X-Proofpoint-ORIG-GUID: GX2yEmyF5hZF8068qXdpSStdw4GGNTcP

It's apparent that a number of distributions and their customers
remain on long-term stable kernels. We are aware of the scalability
problems and other bugs in NFSD in kernels between v5.4 and v6.1.

To address the filecache and other scalability problems in those
kernels, I'm preparing backported patches of NFSD fixes for several
popular LTS kernels. The backported commits are destined for the
official LTS kernel branches so that distributions can easily
integrate them into their products.

Once this effort is complete, Greg and Sasha will continue to be
responsible for backporting NFSD-related fixes from upstream into
the LTS kernels.

Here's a status update.

---

I've pushed the NFSD backports to branches in this repo:

https://git.kernel.org/pub/scm/linux/kernel/git/cel/linux.git

If you are able, I encourage you to pull these, review them or try
them out, and report any issues or successes. I'm currently using
the NFS workflows in kdevops as the testing platform, but am
planning to include other tests.


LTS v6.1.y

The v6.1.82 kernel has been updated. This part of the project
is complete.


LTS v5.15.y

A first attempt at merging these patches into v5.15.y was NAK'd
due to some SCSI changes made on behalf of patches to NFSD's pNFS
block layout implementation. The series has been reworked and
retested.

You can find these patches in the "nfsd-5.15.y" branch in the above
repo.


LTS v5.10.y

This branch will need the same reworking as nfsd-5.15.y. I will
start work on that once the v5.15.y work is complete.

You can find these patches in the "nfsd-5.10.y" branch in the above
repo.


--
Chuck Lever