函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\memcontrol.c Create Date:2022-07-27 17:45:53
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：memcg_update_tcp_max

函数原型：static int memcg_update_tcp_max(struct mem_cgroup *memcg, unsigned long max)

返回类型：int

参数：

类型参数名称
struct mem_cgroup *memcg
unsigned longmax
3462  mutex_lock( & memcg_max_mutex)
3464  ret等于page_counter_set_max - set the maximum number of pages allowed*@counter: counter*@nr_pages: limit to set* Returns 0 on success, -EBUSY if the current number of pages on the* counter already exceeds the specified limit.
3465  如果ret则转到:out
3468  如果非 Legacy tcp memory accounting 则
3485  Advanced usage; refcount, branch is enabled when: count != 0( & memcg_sockets_enabled_key)
3486  Legacy tcp memory accounting = true
3488  out :
3489  mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.
3490  返回:ret
调用者
名称描述
mem_cgroup_writeThe user of this function is...* RES_LIMIT.