函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\fork.c Create Date:2022-07-27 09:57:36
Last Modify:2020-03-17 11:04:53 Copyright©Brick
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函数名称：Please note the differences between mmput and mm_release

函数原型：static void mm_release(struct task_struct *tsk, struct mm_struct *mm)

返回类型：void

参数：

类型参数名称
struct task_struct *tsk
struct mm_struct *mm
1291  uprobe_free_utask(tsk)
1294  deactivate_mm(tsk, mm)
1301  如果清除子进程tid则
1302  如果非任务标志按位与coredump in progress 的值且atomic_read( & *@mm_users: The number of users including userspace. * Use mmget()/mmget_not_zero()/mmput() to modify. When this * drops to 0 (i.e. when the task exits and there are no other * temporary reference holders), we also release a reference on *@mm_count (which )大于1则
1308  put_user - Write a simple value into user space(0, 清除子进程tid)
1309  do_futex(清除子进程tid, FUTEX_WAKE, 1, NULL, NULL, 0, 0)
1312  清除子进程tid = NULL
1319  如果完成量则complete_vfork_done(tsk)
调用者
名称描述
exit_mm_release
exec_mm_release