From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3607A37C0E6 for ; Tue, 24 Feb 2026 11:23:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771932227; cv=none; b=Mbf3fsNYyOLVNbNn9uW1FXP+6fT4LrAhk8n2VnZo+ZyVjh4KfuX/T9oNvtj9DTK/nwOIjh7WNUYKp8tfKliDBWG/3c01J6AJR6q/vuMOi1pBDl1kEeCMUWB/b66Hfn97j7wVOT1xUEhifM8fubeITkBRdyy8Y5kNW/+i01iDaXI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771932227; c=relaxed/simple; bh=pqbpubc3SgE/vzzLlA+7qoAjLDjHD6vu1AUhctqdf+8=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=lsZhqn4S5TL1ytxyFsSFnFEVvp7OpXKO60dPfEgnQQ5N71O/eDrXo7sgrIVY/4D0GN6w7DPB7BS/CtW44r+641Msf7ZX7a1jnDsLLj61i49WhAl08icwqdOFa/Spl3n4D2TC16EF4CZqCtlw//0wV9ozZQJP9LZr/rgqyA2RnOY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=B/exbsJa; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="B/exbsJa" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1771932225; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=mfGKnBQ3ObbG8Yw8OpNOKHf6B/V3WX+Q13hI/DT1Aho=; b=B/exbsJaSjGU6wyCMCF1gOMFp7JUuupwnSMvTm1onFPC9+qhxY2e2tiITkdV0QzDxwc9Vm +qIA5e+qNVglUGx2RoxWIS2Jn1XiizE2lt9qwZbRrpLUlx1dqL1NoJuRcWzIrWVzGSlg0V 300OXZW6BeQ51DPE9sk8411YuEUQ5qU= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-679-3rrS1RrGM3C4xJUdb9WXPg-1; Tue, 24 Feb 2026 06:23:41 -0500 X-MC-Unique: 3rrS1RrGM3C4xJUdb9WXPg-1 X-Mimecast-MFC-AGG-ID: 3rrS1RrGM3C4xJUdb9WXPg_1771932219 Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (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-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 1BC961956059; Tue, 24 Feb 2026 11:23:39 +0000 (UTC) Received: from fweimer-oldenburg.csb.redhat.com (unknown [10.45.226.43]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id CDA511800666; Tue, 24 Feb 2026 11:23:35 +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: <20251229-work-empty-namespace-v1-1-bfb24c7b061f@kernel.org> (Christian Brauner's message of "Mon, 29 Dec 2025 14:03:24 +0100") References: <20251229-work-empty-namespace-v1-0-bfb24c7b061f@kernel.org> <20251229-work-empty-namespace-v1-1-bfb24c7b061f@kernel.org> Date: Tue, 24 Feb 2026 12:23:33 +0100 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Precedence: bulk X-Mailing-List: linux-api@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 * 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 Thanks, Florian