linux-kernel - [PATCH V2 09/20] nvdimm/namespace_label: Skip region label during ns label DPA reservation

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Message-Id: <20250730121209.303202-10-s.neeraj@samsung.com>
Date: Wed, 30 Jul 2025 17:41:58 +0530
From: Neeraj Kumar <s.neeraj@...sung.com>
To: linux-cxl@...r.kernel.org, nvdimm@...ts.linux.dev,
	linux-kernel@...r.kernel.org, gost.dev@...sung.com
Cc: a.manzanares@...sung.com, vishak.g@...sung.com, neeraj.kernel@...il.com,
	Neeraj Kumar <s.neeraj@...sung.com>
Subject: [PATCH V2 09/20] nvdimm/namespace_label: Skip region label during
 ns label DPA reservation

If Namespace label is present in LSA during nvdimm_probe then DPA
reservation is required. But this reservation is not required by region
label. Therefore if LSA scanning finds any region label, skip it.

Signed-off-by: Neeraj Kumar <s.neeraj@...sung.com>
---
 drivers/nvdimm/label.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c
index c4748e30f2b6..064a945dcdd1 100644
--- a/drivers/nvdimm/label.c
+++ b/drivers/nvdimm/label.c
@@ -452,6 +452,10 @@ int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd)
 		lsa_label = to_label(ndd, slot);
 		nd_label = &lsa_label->ns_label;
 
+		/* skip region label, dpa reservation for ns label only */
+		if (is_region_label(ndd, lsa_label))
+			continue;
+
 		if (!slot_valid(ndd, lsa_label, slot))
 			continue;
 
-- 
2.34.1