函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\vmacache.c Create Date:2022-07-27 15:56:03
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：vmacache_find

函数原型：struct vm_area_struct *vmacache_find(struct mm_struct *mm, unsigned long addr)

返回类型：struct vm_area_struct

参数：

类型参数名称
struct mm_struct *mm
unsigned longaddr
64  idx等于VMACACHE_HASH(addr)
67  count_vm_vmacache_event(VMACACHE_FIND_CALLS)
69  如果非vmacache_valid(mm)则返回:NULL
72  以i小于VMACACHE_SIZE循环
73  vma等于vmas[idx]
75  如果vma则
80  如果Our start address within vm_mm. 小于等于addr且The first byte after our end addresswithin vm_mm. 大于addr则
85  如果idx先自加恒等于VMACACHE_SIZE则idx等于0
89  返回:NULL
调用者
名称描述
find_vmalook up the first VMA in which addr resides, NULL if none* - should be called with mm->mmap_sem at least held readlocked
find_vmaLook up the first VMA which satisfies addr < vm_end, NULL if none.