h->length = length;
All basic functionality has been completed. The software has been in use since
，详情可参考新收录的资料
第一百二十八条 本章关于出租人和承租人之间权利义务的规定，仅在租船合同没有约定或者没有不同约定时适用。
This is exactly what the get_user_pages() family of functions provides. These functions lookup physical memory frames that back a given virtual address range by walking the page tables. They also handle access validation and non-present pages.