函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\sched\core.c Create Date:2022-07-27 10:37:33
Last Modify:2022-05-22 13:40:38 Copyright©Brick
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函数名称：io_schedule

函数原型：void __sched io_schedule(void)

返回类型：void

参数：无

5803  token等于io_schedule_prepare()
5804  进程调度
5805  io_schedule_finish(token)
调用者
名称描述
bit_wait_io
swap_readpage
blk_mq_get_tag
rq_qos_waitq_qos_wait - throttle on a rqw if we need to*@rqw: rqw to throttle on*@private_data: caller provided specific data*@acquire_inflight_cb: inc the rqw->inflight counter if we can*@cleanup_cb: the callback to cleanup in case we race with a waker
ioc_rqos_throttle
__blkdev_direct_IO
dio_await_oneWait for the next BIO to complete. Remove it and return it. NULL is* returned once all BIOs have been completed. This must only be called once* all bios have been issued so that dio->refcount can only decrease. This
iomap_dio_rwmap_dio_rw() always completes O_[D]SYNC writes regardless of whether the IO* is being issued as AIO or not. This allows us to optimise pure data writes* to use REQ_FUA rather than requiring generic_write_sync() to issue a* REQ_FLUSH post write
wait_on_page_bit_common
blk_mq_poll_hybrid_sleep
__blkdev_direct_IO_simple