Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'io_uring-6.4-2023-05-26' of git://git.kernel.dk/linux
Pull io_uring fix from Jens Axboe:
"Just a single fix for the conditional schedule with the SQPOLL thread,
dropping the uring_lock if we do need to reschedule"
* tag 'io_uring-6.4-2023-05-26' of git://git.kernel.dk/linux:
io_uring: unlock sqd->lock before sq thread release CPU
+5
-1
+5
-1
io_uring/sqpoll.c
+5
-1
io_uring/sqpoll.c
···
255
255
sqt_spin = true;
256
256
257
257
if (sqt_spin || !time_after(jiffies, timeout)) {
258
-
cond_resched();
259
258
if (sqt_spin)
260
259
timeout = jiffies + sqd->sq_thread_idle;
260
+
if (unlikely(need_resched())) {
261
+
mutex_unlock(&sqd->lock);
262
+
cond_resched();
263
+
mutex_lock(&sqd->lock);
264
+
}
261
265
continue;
262
266
}
263
267