IOCTL_DISK_SET_CACHE_INFORMATION IOCTL (ntdddisk.h)

Sets disk cache configuration data.

Major code

IRP_MJ_DEVICE_CONTROL

Input buffer

The input buffer.

Input buffer length

Parameters.DeviceIoControl.InputBufferLength in the I/O stack location of the IRP indicates the size, in bytes, of the buffer made available to the driver, which must be >= sizeof(DISK_CACHE_INFORMATION). Otherwise, the driver returns with an error status of STATUS_INFO_LENGTH_MISMATCH.

Output buffer

None.

Output buffer length

None.

Status block

The Information field is set to zero. The Status field can be set to STATUS_SUCCESS or STATUS_INFO_LENGTH_MISMATCH if the input buffer is not large enough.

Requirements

See also

DISK_CACHE_INFORMATION