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x-microsoft-antispam-message-info: Gzfhoz3VvCtR4BZGsPEnJoUCdwsyWkTbYm2k0mBYExdvFeE7BczvBqmy5f+9HTPWDAx+gCfA5NWUe84Y0Y+3Eoyr+FLA+oPHpaatvQerRKaryoCNRGFmi5/OZ0PZr3t5S89k+xtd04rgq9Sf+eFrD84GWqTvbx4pYMTCA+cXyxeCN+ja4B9TXtKAwgJqsYo5 spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Office365-Filtering-Correlation-Id: 79233c04-b75f-4aa6-a34b-08d5a6079cdc X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 79233c04-b75f-4aa6-a34b-08d5a6079cdc X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Apr 2018 15:09:56.7399 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0885 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Thu, Apr 19, 2018 at 06:04:26PM +0300, Thomas Backlund wrote: >Den 19.04.2018 kl. 16:59, skrev Greg KH: >>Anyway, we are trying not to do this, but it does, and will, >>occasionally happen. Look, we just did that for one platform for >>4.9.94! And the key to all of this is good testing, which we are now >>doing, and hopefully you are also doing as well. > >Yeah, but having to test stuff with known breakages is no fun, so we=20 >try to avoid that Known breakages are easier to deal with than unknown ones :) I think that that "bug compatability" is basically a policy on *which* regressions you'll see vs *if* you'll see a regression. We'll never pull in a commit that introduces a bug but doesn't fix another one, right? So if you have to deal with a regression anyway, might as well deal with a regression that is also seen on mainline, so that when you upgrade your stable kernel you'll keep the same set of regressions to deal with.=