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nvme: add preferred I/O size fields to struct nvme_id_ns_nvm

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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>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Caleb Sander Mateos 2026-02-27 13:23:46 -07:00 committed by Keith Busch
parent ed6a9f7dab
commit ac61e869be
1 changed files with 8 additions and 1 deletions
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9
include/linux/nvme.h
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@ -513,9 +513,16 @@ struct nvme_id_ns_nvm {
__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,