copy_user_highpage

Name:copy_user_highpage

Proto:static inline void copy_user_highpage(struct page *to, struct page *from, unsigned long vaddr, struct vm_area_struct *vma)

Type:void

Parameter:

Type	Parameter	Name
struct page *	to
struct page *	from
unsigned long	vaddr
struct vm_area_struct *	vma

255

vfrom = kmap_atomic(from)

256

vto = kmap_atomic(to)

257

copy_user_page(vto, vfrom, vaddr, to)

258

Prevent people trying to call kunmap_atomic() as if it were kunmap()* kunmap_atomic() should get the return value of kmap_atomic, not the page.(vto)

259

Prevent people trying to call kunmap_atomic() as if it were kunmap()* kunmap_atomic() should get the return value of kmap_atomic, not the page.(vfrom)

**Caller**
Name	Describe
cow_user_page
do_cow_fault
copy_user_gigantic_page
copy_subpage
ksm_might_need_to_copy
do_huge_pmd_wp_page_fallback
__collapse_huge_page_copy

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