[PATCH v4 1/8] nvme: add preferred I/O size fields to struct nvme_id_ns_nvm

[Caleb Sander Mateos <csander@purestorage.com>]

A subsequent change will use the NPDGL and NPDAL fields of the NVM
Command Set Specific Identify Namespace structure, so add them (and the
handful of intervening fields) to struct nvme_id_ns_nvm. Add an
assertion that the size is still 4 KB.

Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 include/linux/nvme.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 655d194f8e72..1134e6bf2d5c 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -511,13 +511,20 @@ struct nvme_id_ctrl_zns {
 struct nvme_id_ns_nvm {
 	__le64	lbstm;
 	__u8	pic;
 	__u8	rsvd9[3];
 	__le32	elbaf[64];
-	__u8	rsvd268[3828];
+	__le32	npdgl;
+	__le32	nprg;
+	__le32	npra;
+	__le32	nors;
+	__le32	npdal;
+	__u8	rsvd288[3808];
 };
 
+static_assert(sizeof(struct nvme_id_ns_nvm) == 4096);
+
 enum {
 	NVME_ID_NS_NVM_STS_MASK		= 0x7f,
 	NVME_ID_NS_NVM_GUARD_SHIFT	= 7,
 	NVME_ID_NS_NVM_GUARD_MASK	= 0x3,
 	NVME_ID_NS_NVM_QPIF_SHIFT	= 9,
-- 
2.45.2