__test_page_isolated_in

函数名称：Test all pages in the range is free(means isolated) or not.* all pages in [start_pfn...end_pfn) must be in the same zone.* zone->lock must be held before call this.* Returns the last tested pfn.

函数原型：static unsigned long __test_page_isolated_in_pageblock(unsigned long pfn, unsigned long end_pfn, int flags)

返回类型：unsigned long

参数：

类型	参数	名称
unsigned long	pfn
unsigned long	end_pfn
int	flags

265

当pfn小于end_pfn 循环

266

如果非pfn_valid_within(pfn)则

267

pfn自加

268

继续下一循环

270

page等于pfn_to_page(pfn)

271

如果PageBuddy() indicates that the page is free and in the buddy system* (see mm/page_alloc.c).则pfn加等于1左移page_order(page)位

278

否则如果flags按位与MEMORY_OFFLINE且PageHWPoison(page)则pfn自加

281

否则退出

285

返回:pfn

**调用者**
名称	描述
test_pages_isolated	Caller should ensure that requested range is in a single zone

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