migrate_page_add

Name:migrate_page_add

Proto:static int migrate_page_add(struct page *page, struct list_head *pagelist, unsigned long flags)

Type:int

Parameter:

Type	Parameter	Name
struct page *	page
struct list_head *	pagelist
unsigned long	flags

989

head = compound_head(page)

993

If flags & Move every page to conform to policy || page_mapcount(head) == 1 Then

994

If Not solate_lru_page - tries to isolate a page from its LRU list*@page: page to isolate from its LRU list* Isolates a @page from an LRU list, clears PageLRU and adjusts the* vmstat statistic corresponding to whatever LRU list the page was on. Then

995

list_add_tail - add a new entry*@new: new entry to be added*@head: list head to add it before* Insert a new entry before the specified head.* This is useful for implementing queues.

996

mod_node_page_state(page_pgdat(head), Temporary isolated pages from anon lru + page_is_file_cache - should the page be on a file LRU or anon LRU?*@page: the page to test* Returns 1 if @page is page cache page backed by a regular filesystem,* or 0 if @page is anonymous, tmpfs or otherwise ram or swap backed, hpage_nr_pages(head))

999

Else if flags & Verify existing pages in the mapping Then

1007

Return -EIO

1011

Return 0

**Caller**
Name	Describe
queue_pages_pmd	queue_pages_pmd() has four possible return values:* 0 - pages are placed on the right node or queued successfully
queue_pages_pte_range	Scan through pages checking if pages follow certain conditions,* and move them to the pagelist if they do

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