函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\page_alloc.c Create Date:2022-07-27 16:33:30
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：free_pages_check_bad

函数原型：static void free_pages_check_bad(struct page *page)

返回类型：void

参数：

类型参数名称
struct page *page
1033  bad_reason = NULL
1034  bad_flags等于0
1036  如果此条件成立可能性小(为编译器优化)(atomic_read( & * If the page can be mapped to userspace, encodes the number * of times this page is referenced by a page table.) != - 1)则bad_reason等于"nonzero mapcount"
1038  如果此条件成立可能性小(为编译器优化)( See page-flags.h for PAGE_MAPPING_FLAGS != NULL)则bad_reason等于"non-NULL mapping"
1040  如果此条件成立可能性小(为编译器优化)(page_ref_count(page) != 0)则bad_reason等于"nonzero _refcount"
1042  如果此条件成立可能性小(为编译器优化)(体系结构无关页的属性 & Flags checked when a page is freed. Pages being freed should not have* these flags set. It they are, there is a problem.)则
1043  bad_reason等于"PAGE_FLAGS_CHECK_AT_FREE flag(s) set"
1044  bad_flags等于Flags checked when a page is freed. Pages being freed should not have* these flags set. It they are, there is a problem.
1047  如果此条件成立可能性小(为编译器优化)(mem_cgroup)则bad_reason等于"page still charged to cgroup"
1050  bad_page(page, bad_reason, bad_flags)
调用者
名称描述
free_pages_check