// ntddstor.h

typedef struct _DEVICE_DSM_NVCACHE_CHANGE_PRIORITY_PARAMETERS {
  ULONG Size;
  UCHAR TargetPriority;
  UCHAR Reserved[3];
} DEVICE_DSM_NVCACHE_CHANGE_PRIORITY_PARAMETERS, *PDEVICE_DSM_NVCACHE_CHANGE_PRIORITY_PARAMETERS;
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Windows Driver Kit DDI reference (ns-ntddstor-_device_dsm_nvcache_change_priority_parameters)

DEVICE_DSM_NVCACHE_CHANGE_PRIORITY_PARAMETERS structure

Description

The DEVICE_DSM_NVCACHE_CHANGE_PRIORITY_PARAMETERS structure contains caching priority information to apply to a range of logical blocks.

Members

`Size`

Size of this structure. Set to sizeof(DEVICE_DSM_NVCACHE_CHANGE_PRIORITY_PARAMETERS).

`TargetPriority`

The target caching priority to apply to a range of logical blocks.

`Reserved`

Reserved for future use; do not use.

Remarks

The output block in the payload of an IOCTL_STORAGE_MANAGE_DATA_SET_ATTRIBUTES request is formatted as a DEVICE_DSM_NVCACHE_CHANGE_PRIORITY_PARAMETERS structure when the action is DeviceDsmAction_NvCache_Change_Priority. See DEVICE_DSM_ACTION Descriptions for more details about this action.

DEVICE_DSM_NVCACHE_CHANGE_PRIORITY_PARAMETERS - NtDoc