Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\huge_memory.c Create Date:2022-07-28 16:00:31
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:mm_get_huge_zero_page

Proto:struct page *mm_get_huge_zero_page(struct mm_struct *mm)

Type:struct page

Parameter:

TypeParameterName
struct mm_struct *mm
118  If st_bit - Determine whether a bit is set*@nr: bit number to test*@addr: Address to start counting from Then Return READ_ONCE(huge_zero_page)
121  If Not get_huge_zero_page() Then Return NULL
124  If 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). Then put_huge_zero_page()
127  Return READ_ONCE(huge_zero_page)
Caller
NameDescribe
do_huge_pmd_anonymous_page
copy_huge_pmd