__pageblock_pfn_to

函数名称：Check that the whole (or subset of) a pageblock given by the interval of* [start_pfn, end_pfn) is valid and within the same zone, before scanning it* with the migration of free compaction scanner

函数原型：struct page *__pageblock_pfn_to_page(unsigned long start_pfn, unsigned long end_pfn, struct zone *zone)

返回类型：struct page

参数：

类型	参数	名称
unsigned long	start_pfn
unsigned long	end_pfn
struct zone *	zone

1522

end_pfn自减

1524

如果非pfn_valid(start_pfn)或非pfn_valid(end_pfn)则返回:NULL

1527

start_page等于Return page for the valid pfn only if the page is online. All pfn* walkers which rely on the fully initialized page->flags and others* should use this rather than pfn_valid && pfn_to_page(start_pfn)

1528

如果非start_page则返回:NULL

1531

如果page_zone(start_page)不等于zone则返回:NULL

1534

end_page等于pfn_to_page(end_pfn)

1537

如果The identification function is mainly used by the buddy allocator for* determining if two pages could be buddies不等于The identification function is mainly used by the buddy allocator for* determining if two pages could be buddies则返回:NULL

1540

返回:start_page

**调用者**
名称	描述
set_zone_contiguous
pageblock_pfn_to_page

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