函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\migrate.c Create Date:2022-07-27 17:32:26
Last Modify:2022-05-20 09:53:13 Copyright©Brick
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函数名称：expected_page_refs

函数原型：static int expected_page_refs(struct address_space *mapping, struct page *page)

返回类型：int

参数：

类型参数名称
struct address_space *mapping
struct page *page
376  expected_count等于1
382  expected_count加等于is_device_private_page(page)
383  如果mapping则expected_count加等于hpage_nr_pages(page)加页面私有占用
386  返回:expected_count
调用者
名称描述
migrate_page_move_mappingReplace the page in the mapping.* The number of remaining references must be:* 1 for anonymous pages without a mapping* 2 for pages with a mapping* 3 for pages with a mapping and PagePrivate/PagePrivate2 set.
__buffer_migrate_page