From c05eecf636101dd4347b2d8fa457626bf0088e0a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 30 Nov 2012 23:59:29 -0500 Subject: SUNRPC: Don't allow low priority tasks to pre-empt higher priority ones Currently, the priority queues attempt to be 'fair' to lower priority tasks by scheduling them after a certain number of higher priority tasks have run. The problem is that both the transport send queue and the NFSv4.1 session slot queue have strong ordering requirements. This patch therefore removes the fairness code in favour of strong ordering of task priorities. Signed-off-by: Trond Myklebust --- include/linux/sunrpc/sched.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux/sunrpc/sched.h') diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index dc0c3cc3ada3..b64f8eb0b973 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -192,7 +192,6 @@ struct rpc_wait_queue { pid_t owner; /* process id of last task serviced */ unsigned char maxpriority; /* maximum priority (0 if queue is not a priority queue) */ unsigned char priority; /* current priority */ - unsigned char count; /* # task groups remaining serviced so far */ unsigned char nr; /* # tasks remaining for cookie */ unsigned short qlen; /* total # tasks waiting in queue */ struct rpc_timer timer_list; -- cgit v1.2.3-70-g09d2