page_ref_freeze

函数名称：page_ref_freeze

函数原型：static inline int page_ref_freeze(struct page *page, int count)

返回类型：int

参数：

类型	参数	名称
struct page *	page
int	count

166

ret等于此条件成立可能性大(为编译器优化)(atomic_cmpxchg( & Usage count. *DO NOT USE DIRECTLY*. See page_ref.h , count, 0) == count)

168

如果page_ref_tracepoint_active(__tracepoint_page_ref_freeze)则__page_ref_freeze(page, count, ret)

170

返回:ret

**调用者**
名称	描述
__remove_mapping	Same as remove_mapping, but if the page is removed from the mapping, it* gets returned with a refcount of 0.
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_to_list	This function splits huge page into normal pages. @page can point to any* subpage of huge page to split. Split doesn't change the position of @page.* Only caller must hold pin on the @page, otherwise split fails with -EBUSY.* The huge page must be locked.

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码