函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\drop_caches.c Create Date:2022-07-29 11:06:23
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：drop_caches_sysctl_handler

函数原型：int drop_caches_sysctl_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos)

返回类型：int

参数：

类型参数名称
struct ctl_table *table
intwrite
void __user *buffer
size_t *length
loff_t *ppos
54  ret等于指定大小读sysctl整数向量
55  如果ret则返回:ret
57  如果write则
60  如果A global variable is a bit ugly, but it keeps the code simple 按位与1则
61  rate_supers - call function for all active superblocks*@f: function to call*@arg: argument to pass to it* Scans the superblock list and calls given function, passing it* locked superblock and given argument.
62  Disable counters
64  如果A global variable is a bit ugly, but it keeps the code simple 按位与2则
65  drop_slab()
66  Disable counters
68  如果非stfu则
69  打印信息("%s (%d): drop_caches: %d\n", comm, task_pid_nr(当前进程), A global variable is a bit ugly, but it keeps the code simple )
73  stfu或等于A global variable is a bit ugly, but it keeps the code simple 按位与4
75  返回:0