函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\page-writeback.c Create Date:2022-07-27 15:34:24
Last Modify:2022-05-23 13:25:58 Copyright©Brick
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函数名称：We're in laptop mode and we've just synced. The sync's writes will have* caused another writeback to be scheduled by laptop_io_completion.* Nothing needs to be written back anymore, so we unschedule the writeback.

函数原型：void laptop_sync_completion(void)

返回类型：void

参数：无

2024  _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
2026  遍历RCU(bdi, & bdi_list, bdi_list)
2027  del_timer - deactivate a timer.*@timer: the timer to be deactivated* del_timer() deactivates a timer - this works on both active and inactive* timers.* The function returns whether it has deactivated a pending timer or not.* (ie
2029  _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()
调用者
名称描述
ksys_syncSync everything. We start by waking flusher threads so that most of* writeback runs on all devices in parallel. Then we sync all inodes reliably* which effectively also waits for all flusher threads to finish doing* writeback