From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ot1-f43.google.com (mail-ot1-f43.google.com [209.85.210.43]) by mail19.linbit.com (LINBIT Mail Daemon) with ESMTP id 42B72163029 for ; Wed, 11 Feb 2026 18:36:21 +0100 (CET) Received: by mail-ot1-f43.google.com with SMTP id 46e09a7af769-7cfd65ea639so1472298a34.0 for ; Wed, 11 Feb 2026 09:36:21 -0800 (PST) From: Jens Axboe To: =?utf-8?q?Christoph_B=C3=B6hmwalder?= In-Reply-To: <20260205173928.3166880-2-christoph.boehmwalder@linbit.com> References: <20260205173928.3166880-2-christoph.boehmwalder@linbit.com> Subject: Re: [PATCH] drbd: always set BLK_FEAT_STABLE_WRITES Message-Id: <177083138009.157276.14024749739595076725.b4-ty@kernel.dk> Date: Wed, 11 Feb 2026 10:36:20 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Cc: linux-block@vger.kernel.org, Lars Ellenberg , Philipp Reisner , linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com List-Id: "*Coordination* of development, patches, contributions -- *Questions* \(even to developers\) go to drbd-user, please." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Thu, 05 Feb 2026 18:39:29 +0100, Christoph Böhmwalder wrote: > DRBD requires stable pages because it may read the same bio data > multiple times for local disk I/O and network transmission, and in > some cases for calculating checksums. > > The BLK_FEAT_STABLE_WRITES flag is set when the device is first > created, but blk_set_stacking_limits() clears it whenever a > backing device is attached. In some cases the flag may be > inherited from the backing device, but we want it to be enabled > at all times. > > [...] Applied, thanks! [1/1] drbd: always set BLK_FEAT_STABLE_WRITES commit: 2ebc8d600fb907fa6b1e7095c0b6d84fc47e91ea Best regards, -- Jens Axboe