函数逻辑报告

函数名称：Later we can get more picky about what "in core" means precisely.* For now, simply check to see if the page is in the page cache,* and is up to date; i.e. that no page-in operation would be required

函数原型：static unsigned char mincore_page(struct address_space *mapping, unsigned long pgoff)

返回类型：unsigned char

参数：