函数逻辑报告

函数名称：Scan a region of virtual memory, calling a provided function on* each leaf page table where it exists.* Unlike apply_to_page_range, this does _not_ fill in page tables* where they are absent.

函数原型：int apply_to_existing_page_range(struct mm_struct *mm, unsigned long addr, unsigned long size, pte_fn_t fn, void *data)

返回类型：int

参数：