alloc_zeroed_user_highpage

函数名称：alloc_zeroed_user_highpage_movable - Allocate a zeroed HIGHMEM page for a VMA that the caller knows can move*@vma: The VMA the page is to be allocated for*@vaddr: The virtual address the page will be inserted into* This function will allocate a page for a

函数原型：static inline struct page *alloc_zeroed_user_highpage_movable(struct vm_area_struct *vma, unsigned long vaddr)

返回类型：struct page

参数：

类型	参数	名称
struct vm_area_struct *	vma
unsigned long	vaddr

**调用者**
名称	描述
wp_page_copy	Handle the case of a page which we actually need to copy to a new page.* Called with mmap_sem locked and the old page referenced, but* without the ptl held.* High level logic flow:* - Allocate a page, copy the content of the old page to the new one.
do_anonymous_page	We enter with non-exclusive mmap_sem (to exclude vma changes,* but allow concurrent faults), and pte mapped but not yet locked.* We return with mmap_sem still held, but pte unmapped and unlocked.

函数逻辑报告