函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\fs-writeback.c Create Date:2022-07-29 10:41:32
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Wake up bdi's periodically to make sure dirtytime inodes gets* written back periodically. We deliberately do *not* check the* b_dirtytime list in wb_has_dirty_io(), since this would cause the* kernel to be constantly waking up once there are any dirtytime

函数原型：static void wakeup_dirtytime_writeback(struct work_struct *w)

返回类型：void

参数：

类型参数名称
struct work_struct *w
2165  _read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other
2169  遍历RCU(wb, & list of all wbs , bdi_node)
2170  如果非链表为空则wb_wakeup(wb)
2173  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
2174  在延迟工作队列中放置任务