Function report |
Source Code:mm\backing-dev.c |
Create Date:2022-07-28 14:24:37 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:wait_iff_congested - Conditionally wait for a backing_dev to become uncongested or a pgdat to complete writes*@sync: SYNC or ASYNC IO*@timeout: timeout in jiffies* In the event of a congested backing_dev (any backing_dev) this waits* for up to @timeout
Proto:long wait_iff_congested(int sync, long timeout)
Type:long
Parameter:
Type | Parameter | Name |
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int | sync | |
long | timeout |
1120 | DEFINE_WAIT(wait) |
1121 | wqh = congestion_wqh[sync] |
1127 | If atomic_read( & nr_wb_congested[sync]) == 0 Then |
1128 | cond_resched() |
1135 | Go to out |
1140 | ret = This task is about to go to sleep on IO. Increment rq->nr_iowait so* that process accounting knows that this is a task in IO wait state. |
1143 | out : |
1144 | trace_writeback_wait_iff_congested(jiffies_to_usecs(timeout), jiffies_to_usecs(jiffies - start)) |
1147 | Return ret |
Name | Describe |
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shrink_node |
Source code conversion tool public plug-in interface | X |
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Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion |