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io-wq: add cond_resched() to worker thread
author
Hillf Danton
<hdanton@sina.com>
Tue, 24 Dec 2019 16:14:29 +0000
(09:14 -0700)
committer
Jens Axboe
<axboe@kernel.dk>
Tue, 24 Dec 2019 16:14:29 +0000
(09:14 -0700)
Reschedule the current IO worker to cut the risk that it is becoming
a cpu hog.
Signed-off-by: Hillf Danton <hdanton@sina.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
fs/io-wq.c
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diff --git
a/fs/io-wq.c
b/fs/io-wq.c
index
a1c8545
..
541c8a3
100644
(file)
--- a/
fs/io-wq.c
+++ b/
fs/io-wq.c
@@
-429,6
+429,8
@@
next:
if (signal_pending(current))
flush_signals(current);
+ cond_resched();
+
spin_lock_irq(&worker->lock);
worker->cur_work = work;
spin_unlock_irq(&worker->lock);