函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\page_ext.c Create Date:2022-07-27 18:07:56
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：lookup_page_ext

函数原型：struct page_ext *lookup_page_ext(const struct page *page)

返回类型：struct page_ext

参数：

类型参数名称
const struct page *page
117  pfn等于page_to_pfn(page)
121  base等于node_page_ext
128  如果此条件成立可能性小(为编译器优化)(!base)则返回:NULL
130  index等于pfn减und_down - round down to next specified power of 2*@x: the value to round*@y: multiple to round down to (must be a power of 2)* Rounds @x down to next multiple of @y (which must be a power of 2).* To perform arbitrary rounding down, use rounddown() below.(node_start_pfn(page_to_nid(page)), MAX_ORDER_NR_PAGES)
132  返回:get_entry(base, index)
调用者
名称描述
__set_page_owner
__set_page_owner_migrate_reason
__split_page_owner
__copy_page_owner
pagetypeinfo_showmixedcount_print
__dump_page_owner
read_page_owner
init_pages_in_zone