From: Uladzislau Rezki <urezki@xxxxxxxxx> Slow boot time is seen on KVM running typical Linux distributions due to SCSI layer calling call_rcu(). Recent changes to save power may be causing this slowness. Using call_rcu_flush() fixes the issue and brings the boot time back to what it originally was. Convert it. Tested-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx> Signed-off-by: Uladzislau Rezki <urezki@xxxxxxxxx> Signed-off-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx> Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx> --- drivers/scsi/scsi_error.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 6995c89792300..634672e67c81f 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -312,7 +312,7 @@ void scsi_eh_scmd_add(struct scsi_cmnd *scmd) * Ensure that all tasks observe the host state change before the * host_failed change. */ - call_rcu(&scmd->rcu, scsi_eh_inc_host_failed); + call_rcu_flush(&scmd->rcu, scsi_eh_inc_host_failed); } /** -- 2.31.1.189.g2e36527f23
