函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\userfaultfd.c Create Date:2022-07-27 18:09:01
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：mm_alloc_pmd

函数原型：static pmd_t *mm_alloc_pmd(struct mm_struct *mm, unsigned long address)

返回类型：pmd_t

参数：

类型参数名称
struct mm_struct *mm
unsigned longaddress
183  pgd等于a shortcut to get a pgd_t in a given mm(mm, address)
184  p4d等于The following ifdef needed to get the 5level-fixup.h header to work.* Remove it when 5level-fixup.h has been removed.
185  如果非p4d则返回:NULL
187  pud等于pud_alloc(mm, p4d, address)
188  如果非pud则返回:NULL
195  返回:pmd_alloc(mm, pud, address)
调用者
名称描述
__mcopy_atomic