page_ref_unfreeze

Name:page_ref_unfreeze

Proto:static inline void page_ref_unfreeze(struct page *page, int count)

Type:void

Parameter:

Type	Parameter	Name
struct page *	page
int	count

175

VM_BUG_ON_PAGE(page_count(page) != 0, page)

176

VM_BUG_ON(count == 0)

178

atomic_set_release( & Usage count. *DO NOT USE DIRECTLY*. See page_ref.h , count)

179

If page_ref_tracepoint_active(__tracepoint_page_ref_unfreeze) Then __page_ref_unfreeze(page, count)

**Caller**
Name	Describe
__remove_mapping	Same as remove_mapping, but if the page is removed from the mapping, it* gets returned with a refcount of 0.
remove_mapping	Attempt to detach a locked page from its ->mapping. If it is dirty or if* someone else has a ref on the page, abort and return 0. If it was* successfully detached, return 1. Assumes the caller has a single ref on* this page.
shrink_page_list	shrink_page_list() returns the number of reclaimed pages
reuse_ksm_page
migrate_page_move_mapping	Replace the page in the mapping.* The number of remaining references must be:* 1 for anonymous pages without a mapping* 2 for pages with a mapping* 3 for pages with a mapping and PagePrivate/PagePrivate2 set.
migrate_huge_page_move_mapping	The expected number of remaining references is the same as that* of migrate_page_move_mapping().
__split_huge_page_tail

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