mlock_vma_page

Name:Mark page as mlocked if not already.* If page on LRU, isolate and putback to move to unevictable list.

Proto:void mlock_vma_page(struct page *page)

Type:void

Parameter:

Type	Parameter	Name
struct page *	page

91

BUG_ON(!PageLocked(page))

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VM_BUG_ON_PAGE(PageTail(page), page)

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VM_BUG_ON_PAGE(PageCompound(page) && PageDoubleMap indicates that the compound page is mapped with PTEs as well* as PMDs.* This is required for optimization of rmap operations for THP: we can postpone* per small page mapcount accounting (and its overhead from atomic operations), page)

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If Not TestSetPageMlocked(page) Then

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mod_zone_page_state(page_zone(page), mlock()ed pages found and moved off LRU , hpage_nr_pages(page))

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Disable counters

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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 putback_lru_page - put previously isolated page onto appropriate LRU list*@page: page to be put back to appropriate lru list* Add previously isolated @page to appropriate LRU list.* Page may still be unevictable for other reasons.

**Caller**
Name	Describe
try_to_unmap_one	@arg: enum ttu_flags will be passed to this argument
try_to_merge_one_page	ry_to_merge_one_page - take two pages and merge them into one@vma: the vma that holds the pte pointing to page@page: the PageAnon page that we want to replace with kpage*@kpage: the PageKsm page that we want to map instead of page,
remove_migration_pte	Restore a potential migration pte to a working pte entry
follow_trans_huge_pmd
follow_page_pte

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