Re: CPU stall, eventual host hang with BTRFS + NFS under heavy load

["NeilBrown" <neilb@xxxxxxx>]

On Tue, 12 Oct 2021, Chuck Lever III wrote:
> 
> Scott seems well positioned to identify a reproducer. Maybe we
> can give him some likely candidates for possible bugs to explore
> first.

Has this patch been tried?

NeilBrown


diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index c045f63d11fa..308f5961cb78 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -814,6 +814,7 @@ rpc_reset_task_statistics(struct rpc_task *task)
 {
 	task->tk_timeouts = 0;
 	task->tk_flags &= ~(RPC_CALL_MAJORSEEN|RPC_TASK_SENT);
+	clear_bit(RPC_TASK_SIGNALLED, &task->tk_runstate);
 	rpc_init_task_statistics(task);
 }