preallocate_image

函数名称：preallocate_image_pages - Allocate a number of pages for hibernation image.*@nr_pages: Number of page frames to allocate.*@mask: GFP flags to use for the allocation.* Return value: Number of page frames actually allocated

函数原型：static unsigned long preallocate_image_pages(unsigned long nr_pages, gfp_t mask)

返回类型：unsigned long

参数：

类型	参数	名称
unsigned long	nr_pages
gfp_t	mask

1523

nr_alloc等于0

1525

当nr_pages大于0循环

1528

page等于alloc_image_page(mask)

1529

如果非page则退出

1531

memory_bm_set_bit( & Memory bitmap used during hibernation for marking allocated page frames that* will contain copies of saveable pages. During restore it is initially used* for marking hibernation image pages, but then the set bits from it are, page_to_pfn(page))

1532

如果PageHighMem(page)则Numbers of normal and highmem page frames allocated for hibernation image* before suspending devices.自加

1534

否则Numbers of normal and highmem page frames allocated for hibernation image* before suspending devices.自加

1536

nr_pages自减

1537

nr_alloc自加

1540

返回:nr_alloc

**调用者**
名称	描述
preallocate_image_memory

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