函数逻辑报告

函数名称：Same as above except that this variant is more careful and checks that there* are also no buffer head references. This function is the right one for* mappings where buffer heads are directly looked up and referenced (such as* block device mappings).

函数原型：int buffer_migrate_page_norefs(struct address_space *mapping, struct page *newpage, struct page *page, enum migrate_mode mode)

返回类型：int

参数：