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nvmet: reorder fields in 'struct nvme_dhchap_queue_context'

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Group some variables based on their sizes to reduce holes.
On x86_64, this shrinks the size of 'struct nvme_dhchap_queue_context' from
416 to 400 bytes.

This structure is kvcalloc()'ed in nvme_auth_init_ctrl(), so it is likely
that the allocation can be relatively big. Saving 16 bytes per structure
may might a slight difference.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Christophe JAILLET 2023-05-01 14:40:28 +02:00 committed by Keith Busch
parent e64b0c807c
commit 0f5335e158
1 changed files with 3 additions and 3 deletions
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6
drivers/nvme/host/auth.c
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@ -30,18 +30,18 @@ struct nvme_dhchap_queue_context {
u32 s2;
u16 transaction;
u8 status;
u8 dhgroup_id;
u8 hash_id;
size_t hash_len;
u8 dhgroup_id;
u8 c1[64];
u8 c2[64];
u8 response[64];
u8 *host_response;
u8 *ctrl_key;
int ctrl_key_len;
u8 *host_key;
int host_key_len;
u8 *sess_key;
int ctrl_key_len;
int host_key_len;
int sess_key_len;
};