函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\bfq-iosched.c Create Date:2022-07-27 19:34:24
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：bfq_back_seek_penalty_store

函数原型：static ssize_t bfq_back_seek_penalty_store(struct elevator_queue *e, const char *page, size_t count)

返回类型：ssize_t

参数：

类型参数名称
struct elevator_queue *e
const char *page
size_tcount
6644  bfqd等于elevator_data
6644  __min等于1, __max等于0U的反右移1位
6644  ret等于bfq_var_store( & __data, (page))
6644  如果ret则返回:ret
6644  如果__data小于__min则__data等于__min
6644  否则如果__data大于__max则__data等于__max
6644  如果0恒等于1则* weight of backward seeks wrt forward ones 等于msecs_to_jiffies: - convert milliseconds to jiffies*@m: time in milliseconds* conversion is done as follows:* - negative values mean 'infinite timeout' (MAX_JIFFY_OFFSET)* - 'too large' values [that would result in larger than
6644  否则如果0恒等于2则* weight of backward seeks wrt forward ones 等于__data乘1000000L
6644  否则* weight of backward seeks wrt forward ones 等于__data
6644  返回:count