From nobody Mon Feb 9 22:59:51 2026 Received: from mailout2.samsung.com (mailout2.samsung.com [203.254.224.25]) (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 E556035BDBC for ; Fri, 9 Jan 2026 12:45:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=203.254.224.25 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767962723; cv=none; b=UeHPP+moArDsdSynW7m+K8cZcJm+RB+cQz16zbv8EVqqEwwTsjzLGnsZyzsv6hmWL8XfZVCNd2WY54zypK3smJf7n0sUEPld/J2g1MQ64zWZVs4LaMaaclQHSb9X4j3SnfKhhdJnXJYPzWk6MccS+WcYOoslzpB8LIJrXMbFLFo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767962723; c=relaxed/simple; bh=Vl6QRqBDVWeDPdvPoeu6lPZ41lV+RQ4xt5L2bqTpzrs=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:MIME-Version: Content-Type:References; b=GIJigtV6dE6l0xJ4RoFW+FfPU0l4FElb0vm/t1Ov25+WXqPxyu8ZX8UWxqWrxPTmlOnpDFE7gOVLWUb8J1mH1QMGnYWvYx4MCabyKral/B9If8BUjts2Q5G6oGljirj5gjVkWiuQg9pplIgv+B/4ethUNf0jZiDm04btYFB4lpc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com; spf=pass smtp.mailfrom=samsung.com; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b=OPlbjTXk; arc=none smtp.client-ip=203.254.224.25 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=samsung.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="OPlbjTXk" Received: from epcas5p1.samsung.com (unknown [182.195.41.39]) by mailout2.samsung.com (KnoxPortal) with ESMTP id 20260109124520epoutp0278ae1a0af38be063b17934d9a7ed6234~JELodczUx2083220832epoutp02j for ; Fri, 9 Jan 2026 12:45:20 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout2.samsung.com 20260109124520epoutp0278ae1a0af38be063b17934d9a7ed6234~JELodczUx2083220832epoutp02j DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1767962720; bh=c7T6ZJ4KXocop9UUK8AuZEyn63B7t7oAxoInpDQTVkc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OPlbjTXktLc/wSdAnMvrJcYcPFwUsunYhy9N5+7H81c/S1o19b8KaRce7iY0zAQy6 zCFsEJaoU3z24Jpau0kAj9wy4HW4v0/UIq9xTdOmfe5gVtawFG4E2pGadGK989xGyv tISvhY1EyUmlRF4/Cf7Kk2Cj6cY5L+NXFOZ3Y+cU= Received: from epsnrtp03.localdomain (unknown [182.195.42.155]) by epcas5p3.samsung.com (KnoxPortal) with ESMTPS id 20260109124519epcas5p309bfdb17e5d9533261b40c7991c631c8~JELn09XOe2029020290epcas5p3q; Fri, 9 Jan 2026 12:45:19 +0000 (GMT) Received: from epcas5p4.samsung.com (unknown [182.195.38.93]) by epsnrtp03.localdomain (Postfix) with ESMTP id 4dnhM26510z3hhT4; Fri, 9 Jan 2026 12:45:18 +0000 (GMT) Received: from epsmtip1.samsung.com (unknown [182.195.34.30]) by epcas5p2.samsung.com (KnoxPortal) with ESMTPA id 20260109124518epcas5p26832d0b4ae4017cb3afbd613bf58eabd~JELmzoVZa2073820738epcas5p2W; Fri, 9 Jan 2026 12:45:18 +0000 (GMT) Received: from test-PowerEdge-R740xd.samsungds.net (unknown [107.99.41.79]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20260109124517epsmtip14cf401a10c2622402698c0de1eb6b24d~JELlvXoOr0972509725epsmtip1Y; Fri, 9 Jan 2026 12:45:17 +0000 (GMT) From: Neeraj Kumar To: linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org, gost.dev@samsung.com Cc: a.manzanares@samsung.com, vishak.g@samsung.com, neeraj.kernel@gmail.com, Neeraj Kumar Subject: [PATCH V5 06/17] nvdimm/label: Preserve region label during namespace creation Date: Fri, 9 Jan 2026 18:14:26 +0530 Message-Id: <20260109124437.4025893-7-s.neeraj@samsung.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260109124437.4025893-1-s.neeraj@samsung.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CMS-MailID: 20260109124518epcas5p26832d0b4ae4017cb3afbd613bf58eabd X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" CMS-TYPE: 105P cpgsPolicy: CPGSC10-542,Y X-CFilter-Loop: Reflected X-CMS-RootMailID: 20260109124518epcas5p26832d0b4ae4017cb3afbd613bf58eabd References: <20260109124437.4025893-1-s.neeraj@samsung.com> During namespace creation we scan labels present in LSA using scan_labels(). Currently scan_labels() is only preserving namespace labels into label_ent list. In this patch we also preserve region label into label_ent list Reviewed-by: Dave Jiang Signed-off-by: Neeraj Kumar Reviewed-by: Ira Weiny Reviewed-by: Jonathan Cameron --- drivers/nvdimm/namespace_devs.c | 47 +++++++++++++++++++++++++++++---- 1 file changed, 42 insertions(+), 5 deletions(-) diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_dev= s.c index 657004021c95..8411f4152319 100644 --- a/drivers/nvdimm/namespace_devs.c +++ b/drivers/nvdimm/namespace_devs.c @@ -1994,9 +1994,32 @@ static struct device **scan_labels(struct nd_region = *nd_region) =20 if (count =3D=3D 0) { struct nd_namespace_pmem *nspm; + for (i =3D 0; i < nd_region->ndr_mappings; i++) { + struct cxl_region_label *region_label; + struct nd_label_ent *le, *e; + LIST_HEAD(list); =20 - /* Publish a zero-sized namespace for userspace to configure. */ - nd_mapping_free_labels(nd_mapping); + nd_mapping =3D &nd_region->mapping[i]; + if (list_empty(&nd_mapping->labels)) + continue; + + list_for_each_entry_safe(le, e, &nd_mapping->labels, + list) { + region_label =3D le->region_label; + if (!region_label) + continue; + + /* Preserve region labels if present */ + list_move_tail(&le->list, &list); + } + + /* + * Publish a zero-sized namespace for userspace + * to configure. + */ + nd_mapping_free_labels(nd_mapping); + list_splice_init(&list, &nd_mapping->labels); + } nspm =3D kzalloc(sizeof(*nspm), GFP_KERNEL); if (!nspm) goto err; @@ -2008,7 +2031,7 @@ static struct device **scan_labels(struct nd_region *= nd_region) } else if (is_memory(&nd_region->dev)) { /* clean unselected labels */ for (i =3D 0; i < nd_region->ndr_mappings; i++) { - struct list_head *l, *e; + struct nd_label_ent *le, *e; LIST_HEAD(list); int j; =20 @@ -2019,10 +2042,24 @@ static struct device **scan_labels(struct nd_region= *nd_region) } =20 j =3D count; - list_for_each_safe(l, e, &nd_mapping->labels) { + list_for_each_entry_safe(le, e, &nd_mapping->labels, + list) { + /* Preserve region labels */ + if (uuid_equal(&le->label_uuid, + &cxl_region_uuid)) { + list_move_tail(&le->list, &list); + continue; + } + + /* + * Once preserving selected ns label done + * break out of loop + */ if (!j--) break; - list_move_tail(l, &list); + + /* Preserve selected ns label */ + list_move_tail(&le->list, &list); } nd_mapping_free_labels(nd_mapping); list_splice_init(&list, &nd_mapping->labels); --=20 2.34.1