函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\blk-ioc.c Create Date:2022-07-27 18:39:35
Last Modify:2020-03-17 23:16:06 Copyright©Brick
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函数名称：Called by the exiting task

函数原型：void exit_io_context(struct task_struct *task)

返回类型：void

参数：

类型参数名称
struct task_struct *task
202  Protects ->fs, ->files, ->mm, ->group_info, ->comm, keyring* subscriptions and synchronises with wait4(). Also used in procfs. Also* pins the final release of task.io_context. Also protects ->cpuset and* ->cgroup.subsys[]. And ->vfork_done.
203  ioc等于io_context
204  io_context = NULL
205  task_unlock(task)
207  atomic_dec( & 对应进程)
208  put_io_context_active - put active reference on ioc*@ioc: ioc of interest* Undo get_io_context_active(). If active reference reaches zero after* put, @ioc can never issue further IOs and ioscheds are notified.
调用者
名称描述
do_exit
copy_process创建进程