函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\iomap\direct-io.c Create Date:2022-07-29 11:07:43
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：iomap_dio_bio_end_io

函数原型：static void iomap_dio_bio_end_io(struct bio *bio)

返回类型：void

参数：

类型参数名称
struct bio *bio
148  dio等于bi_private
149  should_dirty等于flags按位与IOMAP_DIO_DIRTY
151  如果bi_status则Set an error in the dio if none is set yet. We have to use cmpxchg* as the submission context and the completion context(s) can race to* update the error.
154  如果atomic_dec_and_test( & ref)则
155  如果wait_for_completion则
156  waiter等于waiter
157  WRITE_ONCE(waiter, NULL)
158  blk_wake_io_task(waiter)
159  否则如果flags按位与IOMAP_DIO_WRITE则
160  inode等于file_inode(文件指针)
162  INIT_WORK( & work, iomap_dio_complete_work)
163  queue_work - queue work on a workqueue*@wq: workqueue to use*@work: work to queue* Returns %false if @work was already on a queue, %true otherwise.* We queue the work to the CPU on which it was submitted, but if the CPU dies
164  否则
165  iomap_dio_complete_work( & work)
169  如果should_dirty则
170  bio_check_pages_dirty(bio)
171  否则
172  bio_release_pages(bio, false)
173  bio_put(bio)