RSI_GRANULE_SIZE
end = ALIGN(base + size, RSI_GRANULE_SIZE);
base = ALIGN_DOWN(base, RSI_GRANULE_SIZE);
buf = alloc_pages_exact(RSI_GRANULE_SIZE, GFP_KERNEL);
info.offset < RSI_GRANULE_SIZE);
free_pages_exact(buf, RSI_GRANULE_SIZE);
size = RSI_GRANULE_SIZE - info->offset;