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| author | Jens Axboe <axboe@kernel.dk> | 2021-03-09 19:49:02 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-03-10 07:28:43 -0700 |
| commit | e22bc9b481a90d7898984ea17621f04a653e2cd1 (patch) | |
| tree | 9c7f6a4821f3afecdbeca3eb07e2d397e0a3dc4c /fs/io_uring.c | |
| parent | e8f98f24549d62cc54bf608c815904a56d4437bc (diff) | |
| download | linux-stable-e22bc9b481a90d7898984ea17621f04a653e2cd1.tar.gz linux-stable-e22bc9b481a90d7898984ea17621f04a653e2cd1.tar.bz2 linux-stable-e22bc9b481a90d7898984ea17621f04a653e2cd1.zip | |
kernel: make IO threads unfreezable by default
The io-wq threads were already marked as no-freeze, but the manager was
not. On resume, we perpetually have signal_pending() being true, and
hence the manager will loop and spin 100% of the time.
Just mark the tasks created by create_io_thread() as PF_NOFREEZE by
default, and remove any knowledge of it in io-wq and io_uring.
Reported-by: Kevin Locke <kevin@kevinlocke.name>
Tested-by: Kevin Locke <kevin@kevinlocke.name>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 62f998bf2ce8..14165e18020c 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -6733,7 +6733,6 @@ static int io_sq_thread(void *data) up_read(&sqd->rw_lock); schedule(); - try_to_freeze(); down_read(&sqd->rw_lock); list_for_each_entry(ctx, &sqd->ctx_list, sqd_list) io_ring_clear_wakeup_flag(ctx); |