safe_copy

函数名称：safe_copy_page - Copy a page in a safe way.* Check if the page we are going to copy is marked as present in the kernel* page tables. This always is the case if CONFIG_DEBUG_PAGEALLOC or* CONFIG_ARCH_HAS_SET_DIRECT_MAP is not set

函数原型：static void safe_copy_page(void *dst, struct page *s_page)

返回类型：void

参数：

类型	参数	名称
void *	dst
struct page *	s_page

1356

如果kernel_page_present(s_page)则

1357

This is needed, because copy_page and memcpy are not usable for copying* task structs.

1358

否则

1359

kernel_map_pages(s_page, 1, 1)

1360

This is needed, because copy_page and memcpy are not usable for copying* task structs.

1361

kernel_map_pages(s_page, 1, 0)

**调用者**
名称	描述
copy_data_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