dm_ima_alloc
ima_buf = dm_ima_alloc(DM_IMA_MEASUREMENT_BUF_LEN, noio);
target_metadata_buf = dm_ima_alloc(DM_IMA_TARGET_METADATA_BUF_LEN, noio);
target_data_buf = dm_ima_alloc(DM_IMA_TARGET_DATA_BUF_LEN, noio);
device_data_buf = dm_ima_alloc(DM_IMA_DEVICE_BUF_LEN, noio);
device_table_data = dm_ima_alloc(DM_IMA_DEVICE_BUF_LEN, noio);
device_table_data = dm_ima_alloc(DM_IMA_DEVICE_BUF_LEN*2, noio);
device_table_data = dm_ima_alloc(DM_IMA_DEVICE_BUF_LEN, noio);
combined_device_data = dm_ima_alloc(DM_IMA_DEVICE_BUF_LEN * 2, noio);
*context = dm_ima_alloc(sizeof(struct dm_ima_context), noio);