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Tue, 24 Feb 2026 08:30:44 -0500 X-MC-Unique: EUYAjSEyMPmasDyasY9NEQ-1 X-Mimecast-MFC-AGG-ID: EUYAjSEyMPmasDyasY9NEQ_1771939843 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id AAF951800758; Tue, 24 Feb 2026 13:30:42 +0000 (UTC) Received: from fweimer-oldenburg.csb.redhat.com (unknown [10.45.226.43]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 968FE19560A2; Tue, 24 Feb 2026 13:30:39 +0000 (UTC) From: Florian Weimer To: Christian Brauner Cc: linux-fsdevel@vger.kernel.org, Jeff Layton , Alexander Viro , Amir Goldstein , Josef Bacik , Jan Kara , Aleksa Sarai , linux-api@vger.kernel.org, rudi@heitbaum.com Subject: Re: [PATCH 1/2] mount: add OPEN_TREE_NAMESPACE In-Reply-To: <20260224-erbitten-kaufleute-6f14e3072c5d@brauner> (Christian Brauner's message of "Tue, 24 Feb 2026 13:05:12 +0100") References: <20251229-work-empty-namespace-v1-0-bfb24c7b061f@kernel.org> <20251229-work-empty-namespace-v1-1-bfb24c7b061f@kernel.org> <20260224-erbitten-kaufleute-6f14e3072c5d@brauner> Date: Tue, 24 Feb 2026 14:30:37 +0100 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 * Christian Brauner: > On Tue, Feb 24, 2026 at 12:23:33PM +0100, Florian Weimer wrote: >> * Christian Brauner: >> >> > diff --git a/include/uapi/linux/mount.h b/include/uapi/linux/mount.h >> > index 5d3f8c9e3a62..acbc22241c9c 100644 >> > --- a/include/uapi/linux/mount.h >> > +++ b/include/uapi/linux/mount.h >> > @@ -61,7 +61,8 @@ >> > /* >> > * open_tree() flags. >> > */ >> > -#define OPEN_TREE_CLONE 1 /* Clone the target tree and attach the clone */ >> > +#define OPEN_TREE_CLONE (1 << 0) /* Clone the target tree and attach the clone */ >> >> This change causes pointless -Werror=undef errors in projects that have >> settled on the old definition. >> >> Reported here: >> >> Bug 33921 - Building with Linux-7.0-rc1 errors on OPEN_TREE_CLONE >> > > Send a patch to change it back, please. > Otherwise it might take a few days until I get around to it. Rudi, could you post a patch? Thanks, Florian