move_freepages

函数名称：Move the free pages in a range to the free lists of the requested type.* Note that start_page and end_pages are not aligned on a pageblock* boundary. If alignment is required, use move_freepages_block()

函数原型：static int move_freepages(struct zone *zone, struct page *start_page, struct page *end_page, int migratetype, int *num_movable)

返回类型：int

参数：

类型	参数	名称
struct zone *	zone
struct page *	start_page
struct page *	end_page
int	migratetype
int *	num_movable

2243

pages_moved等于0

2245

以page小于等于end_page 循环

2246

如果非pfn_valid_within(page_to_pfn(page))则

2247

page自加

2248

继续下一循环

2251

如果非PageBuddy() indicates that the page is free and in the buddy system* (see mm/page_alloc.c).则

2257

如果num_movable且PageLRU(page)或__PageMovable(page)的值则num_movable自加

2261

page自加

2262

继续下一循环

2266

VM_BUG_ON_PAGE(page_to_nid(page) != zone_to_nid(zone), page)

2267

VM_BUG_ON_PAGE(page_zone(page) != zone, page)

2269

order等于page_order(page)

2270

Used for pages which are on another list

2271

page加等于1左移order位

2272

pages_moved加等于1左移order位

2275

返回:pages_moved

**调用者**
名称	描述
move_freepages_block

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