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authorTrond Myklebust <Trond.Myklebust@netapp.com>2012-11-30 23:59:29 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-12-06 00:30:53 +0100
commitc05eecf636101dd4347b2d8fa457626bf0088e0a (patch)
tree6362560cd66efedd12793552b124417e4fe68a74 /include/linux/sunrpc
parentb75ad4cda5a6cd3431b1c65c2739c5ebd2c4b9da (diff)
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 <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/sunrpc')
-rw-r--r--include/linux/sunrpc/sched.h1
1 files changed, 0 insertions, 1 deletions
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;