target: Improve system responsivity during I/O

While testing ib_srpt I noticed that the target system became
rather unresponsive during intensive I/O. The patch below made
my target system responsive again during I/O without decreasing
performance.

Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index a997fde9ffcbb9d57ba730ce43b0f536878392ec..06cce8178fcf1a98bc61d85349cc4e06d4199240 100644 (file)
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -4599,8 +4599,6 @@ static int transport_processing_thread(void *param)
        struct se_cmd *cmd;
        struct se_device *dev = (struct se_device *) param;
 
-       set_user_nice(current, -20);
-
        while (!kthread_should_stop()) {
                ret = wait_event_interruptible(dev->dev_queue_obj.thread_wq,
                                atomic_read(&dev->dev_queue_obj.queue_cnt) ||