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 11:07:42
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：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.

函数原型：static inline void iomap_dio_set_error(struct iomap_dio *dio, int ret)

返回类型：void

参数：

类型参数名称
struct iomap_dio *dio
intret
143  cmpxchg( & error, 0, ret)
调用者
名称描述
iomap_dio_bio_end_io
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