函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\huge_memory.c Create Date:2022-07-27 17:34:40
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：mm_get_huge_zero_page

函数原型：struct page *mm_get_huge_zero_page(struct mm_struct *mm)

返回类型：struct page

参数：

类型参数名称
struct mm_struct *mm
118  如果st_bit - Determine whether a bit is set*@nr: bit number to test*@addr: Address to start counting from则返回:READ_ONCE(huge_zero_page)
121  如果非get_huge_zero_page()则返回:NULL
124  如果st_and_set_bit - Set a bit and return its old value*@nr: Bit to set*@addr: Address to count from* This is an atomic fully-ordered operation (implied full memory barrier).则put_huge_zero_page()
127  返回:READ_ONCE(huge_zero_page)
调用者
名称描述
do_huge_pmd_anonymous_page
copy_huge_pmd