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io_uring: io_sq_thread() doesn't need to flush signals
authorJens Axboe <axboe@kernel.dk>
Wed, 2 Sep 2020 18:44:20 +0000 (12:44 -0600)
committerJens Axboe <axboe@kernel.dk>
Thu, 1 Oct 2020 02:32:33 +0000 (20:32 -0600)
We're not handling signals by default in kernel threads, and we never
use TWA_SIGNAL for the SQPOLL thread internally. Hence we can never
have a signal pending, and we don't need to check for it (nor flush it).

Signed-off-by: Jens Axboe <axboe@kernel.dk>
fs/io_uring.c

index b8fdb10..26f819a 100644 (file)
@@ -6709,8 +6709,6 @@ static int io_sq_thread(void *data)
                                        io_ring_clear_wakeup_flag(ctx);
                                        continue;
                                }
-                               if (signal_pending(current))
-                                       flush_signals(current);
                                schedule();
                                finish_wait(&ctx->sqo_wait, &wait);