函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\madvise.c Create Date:2022-07-27 16:42:07
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Any behaviour which results in changes to the vma->vm_flags needs to* take mmap_sem for writing. Others, which simply traverse vmas, need* to only take it for reading.

函数原型：static int madvise_need_mmap_write(int behavior)

返回类型：int

参数：

类型参数名称
intbehavior
48  当:behavior恒等于move these pages & resources
49  当:behavior恒等于will need these pages
50  当:behavior恒等于don't need these pages
51  当:behavior恒等于deactivate these pages
52  当:behavior恒等于claim these pages
53  当:behavior恒等于 pages only if memory pressure
54  返回:0
55  默认
57  返回:1
调用者
名称描述
SYSCALL_DEFINE3The madvise(2) system call