PageTransCompoundMap

函数名称：PageTransCompoundMap is the same as PageTransCompound, but it also* guarantees the primary MMU has the entire compound page mapped* through pmd_trans_huge, which in turn guarantees the secondary MMUs* can also map the entire compound page

函数原型：static inline int PageTransCompoundMap(struct page *page)

返回类型：int

参数：

类型	参数	名称
struct page *	page

637

如果非PageTransCompound returns true for both transparent huge pages* and hugetlbfs pages, so it should only be called when it's known* that hugetlbfs pages aren't involved.则返回:0

640

如果PageAnon(page)则返回:atomic_read( & * If the page can be mapped to userspace, encodes the number * of times this page is referenced by a page table.)小于0

643

head等于compound_head(page)

645

返回:atomic_read( & * If the page can be mapped to userspace, encodes the number * of times this page is referenced by a page table.)恒等于atomic_read(compound_mapcount_ptr(head))

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

函数逻辑报告