get_mctgt_type

Name:We don't consider PMD mapped swapping or file mapped pages because THP does* not support them for now.* Caller should make sure that pmd_trans_huge(pmd) is true.

Proto:static enum mc_target_type get_mctgt_type_thp(struct vm_area_struct *vma, unsigned long addr, pmd_t pmd, union mc_target *target)

Type:enum mc_target_type

Parameter:

Type	Parameter	Name
struct vm_area_struct *	vma
unsigned long	addr
pmd_t	pmd
union mc_target *	target

5450

struct page * page = NULL

5451

ret = MC_TARGET_NONE

5453

If Value for the false possibility is greater at compile time(is_swap_pmd(pmd)) Then

5454

VM_BUG_ON(thp_migration_supported() && !is_pmd_migration_entry(pmd))

5456

Return ret

5458

page = Currently stuck as a macro due to indirect forward reference to* linux/mmzone.h's __section_mem_map_addr() definition:(pmd)

5459

VM_BUG_ON_PAGE(!page || !PageHead(page), page)

5460

If Not (flags & Types of charges to be moved.) Then Return ret

5462

If mem_cgroup == from Then

5463

ret = MC_TARGET_PAGE

5464

If target Then

5465

get_page(page)

5466

page = page

5469

Return ret

**Caller**
Name	Describe
mem_cgroup_count_precharge_pte_range
mem_cgroup_move_charge_pte_range

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