__split_huge_page_tail

Name:__split_huge_page_tail

Proto:static void __split_huge_page_tail(struct page *head, int tail, struct lruvec *lruvec, struct list_head *list)

Type:void

Parameter:

Type	Parameter	Name
struct page *	head
int	tail
struct lruvec *	lruvec
struct list_head *	list

2440

page_tail = head + tail

2442

VM_BUG_ON_PAGE(atomic_read( & * If the page can be mapped to userspace, encodes the number * of times this page is referenced by a page table.) != - 1, page_tail)

2450

Atomic flags, some possibly * updated asynchronously &= ~Flags checked when a page is prepped for return by the page allocator

2451

Atomic flags, some possibly * updated asynchronously |= Atomic flags, some possibly * updated asynchronously & ( 1L << PG_referenced | 1L << PG_swapbacked | 1L << PG_swapcache | 1L << PG_mlocked | 1L << PG_uptodate | 1L << PG_active | 1L << PG_workingset | 1L << PG_locked | 1L << PG_unevictable | 1L << PG_dirty )

2464

VM_BUG_ON_PAGE(tail > 2 && See page-flags.h for PAGE_MAPPING_FLAGS != mm/page_alloc.c ***********, page_tail)

2466

See page-flags.h for PAGE_MAPPING_FLAGS = See page-flags.h for PAGE_MAPPING_FLAGS

2467

Our offset within mapping. = Our offset within mapping. + tail

2470

2478

clear_compound_head(page_tail)

2481

page_ref_unfreeze(page_tail, 1 + (!PageAnon(head) || PageSwapCache(head)))

2484

If page_is_young(head) Then set_page_young(page_tail)

2486

If page_is_idle(head) Then set_page_idle(page_tail)

2489

page_cpupid_xchg_last(page_tail, page_cpupid_last(head))

2496

sed by __split_huge_page_refcount()

**Caller**
Name	Describe
__split_huge_page

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