diff --git a/include/spdk/nvme.h b/include/spdk/nvme.h
index 69acc57f96..683b74f78c 100644
--- a/include/spdk/nvme.h
+++ b/include/spdk/nvme.h
@@ -910,6 +910,15 @@ uint32_t spdk_nvme_ns_get_md_size(struct spdk_nvme_ns *ns);
  */
 bool spdk_nvme_ns_supports_extended_lba(struct spdk_nvme_ns *ns);
 
+/**
+ * \brief Determine the value returned when reading deallocated blocks.
+ *
+ * If deallocated blocks return 0, the deallocate command can be used as a more efficient alternative
+ * to the write_zeroes command, especially for large requests.
+ */
+enum spdk_nvme_dealloc_logical_block_read_value spdk_nvme_ns_get_dealloc_logical_block_read_value(
+	struct spdk_nvme_ns *ns);
+
 /**
  * \brief Namespace command support flags.
  */
diff --git a/lib/nvme/nvme_ns.c b/lib/nvme/nvme_ns.c
index fb3e5acccd..fe00ccedc4 100644
--- a/lib/nvme/nvme_ns.c
+++ b/lib/nvme/nvme_ns.c
@@ -185,6 +185,13 @@ spdk_nvme_ns_get_data(struct spdk_nvme_ns *ns)
 	return _nvme_ns_get_data(ns);
 }
 
+enum spdk_nvme_dealloc_logical_block_read_value spdk_nvme_ns_get_dealloc_logical_block_read_value(
+	struct spdk_nvme_ns *ns)
+{
+	const struct spdk_nvme_ns_data *data = spdk_nvme_ns_get_data(ns);
+	return data->dlfeat.bits.read_value;
+}
+
 int nvme_ns_construct(struct spdk_nvme_ns *ns, uint16_t id,
 		      struct spdk_nvme_ctrlr *ctrlr)
 {