rds/ib: use system_wq instead of rds_ib_fmr_wq
With cmwq, there's no reason to use dedicated rds_ib_fmr_wq - it's not
in the memory reclaim path and the maximum number of concurrent work
items is bound by the number of devices. Drop it and use system_wq
instead. This rds_ib_fmr_init/exit() noops. Both removed.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Andy Grover <andy.grover@oracle.com>
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index 18a833c..819c35a 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -38,8 +38,6 @@
#include "ib.h"
#include "xlist.h"
-static struct workqueue_struct *rds_ib_fmr_wq;
-
static DEFINE_PER_CPU(unsigned long, clean_list_grace);
#define CLEAN_LIST_BUSY_BIT 0
@@ -307,7 +305,7 @@
int err = 0, iter = 0;
if (atomic_read(&pool->dirty_count) >= pool->max_items / 10)
- queue_delayed_work(rds_ib_fmr_wq, &pool->flush_worker, 10);
+ schedule_delayed_work(&pool->flush_worker, 10);
while (1) {
ibmr = rds_ib_reuse_fmr(pool);
@@ -696,24 +694,6 @@
return ret;
}
-int rds_ib_fmr_init(void)
-{
- rds_ib_fmr_wq = create_workqueue("rds_fmr_flushd");
- if (!rds_ib_fmr_wq)
- return -ENOMEM;
- return 0;
-}
-
-/*
- * By the time this is called all the IB devices should have been torn down and
- * had their pools freed. As each pool is freed its work struct is waited on,
- * so the pool flushing work queue should be idle by the time we get here.
- */
-void rds_ib_fmr_exit(void)
-{
- destroy_workqueue(rds_ib_fmr_wq);
-}
-
static void rds_ib_mr_pool_flush_worker(struct work_struct *work)
{
struct rds_ib_mr_pool *pool = container_of(work, struct rds_ib_mr_pool, flush_worker.work);
@@ -741,7 +721,7 @@
/* If we've pinned too many pages, request a flush */
if (atomic_read(&pool->free_pinned) >= pool->max_free_pinned ||
atomic_read(&pool->dirty_count) >= pool->max_items / 10)
- queue_delayed_work(rds_ib_fmr_wq, &pool->flush_worker, 10);
+ schedule_delayed_work(&pool->flush_worker, 10);
if (invalidate) {
if (likely(!in_interrupt())) {
@@ -749,8 +729,7 @@
} else {
/* We get here if the user created a MR marked
* as use_once and invalidate at the same time. */
- queue_delayed_work(rds_ib_fmr_wq,
- &pool->flush_worker, 10);
+ schedule_delayed_work(&pool->flush_worker, 10);
}
}