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authorMichal Koutný <mkoutny@suse.com>2023-03-14 19:33:32 +0100
committerJens Axboe <axboe@kernel.dk>2023-03-15 06:50:59 -0600
commita5fc1441af7719e93dc7a638a960befb694ade89 (patch)
treec9f57714001f8fda9d75fc699d1f0be00b75bbc5 /io_uring
parentfa780334a8c392d959ae05eb19f2410b3a1e6cb0 (diff)
io_uring/sqpoll: Do not set PF_NO_SETAFFINITY on sqpoll threads
Users may specify a CPU where the sqpoll thread would run. This may conflict with cpuset operations because of strict PF_NO_SETAFFINITY requirement. That flag is unnecessary for polling "kernel" threads, see the reasoning in commit 01e68ce08a30 ("io_uring/io-wq: stop setting PF_NO_SETAFFINITY on io-wq workers"). Drop the flag on poll threads too. Fixes: 01e68ce08a30 ("io_uring/io-wq: stop setting PF_NO_SETAFFINITY on io-wq workers") Link: https://lore.kernel.org/all/20230314162559.pnyxdllzgw7jozgx@blackpad/ Signed-off-by: Michal Koutný <mkoutny@suse.com> Link: https://lore.kernel.org/r/20230314183332.25834-1-mkoutny@suse.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
-rw-r--r--io_uring/sqpoll.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/io_uring/sqpoll.c b/io_uring/sqpoll.c
index 0119d3f1a556..9db4bc1f521a 100644
--- a/io_uring/sqpoll.c
+++ b/io_uring/sqpoll.c
@@ -233,7 +233,6 @@ static int io_sq_thread(void *data)
set_cpus_allowed_ptr(current, cpumask_of(sqd->sq_cpu));
else
set_cpus_allowed_ptr(current, cpu_online_mask);
- current->flags |= PF_NO_SETAFFINITY;
mutex_lock(&sqd->lock);
while (1) {