From e7c2f967445dd2041f0f8e3179cca22bb8bb7f79 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 21 Aug 2012 13:18:24 -0700 Subject: workqueue: use mod_delayed_work() instead of __cancel + queue Now that mod_delayed_work() is safe to call from IRQ handlers, __cancel_delayed_work() followed by queue_delayed_work() can be replaced with mod_delayed_work(). Most conversions are straight-forward except for the following. * net/core/link_watch.c: linkwatch_schedule_work() was doing a quite elaborate dancing around its delayed_work. Collapse it such that linkwatch_work is queued for immediate execution if LW_URGENT and existing timer is kept otherwise. Signed-off-by: Tejun Heo Cc: "David S. Miller" Cc: Tomi Valkeinen --- block/blk-core.c | 6 ++---- block/blk-throttle.c | 7 +------ 2 files changed, 3 insertions(+), 10 deletions(-) (limited to 'block') diff --git a/block/blk-core.c b/block/blk-core.c index 4b4dbdf..4b8b606 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -319,10 +319,8 @@ EXPORT_SYMBOL(__blk_run_queue); */ void blk_run_queue_async(struct request_queue *q) { - if (likely(!blk_queue_stopped(q))) { - __cancel_delayed_work(&q->delay_work); - queue_delayed_work(kblockd_workqueue, &q->delay_work, 0); - } + if (likely(!blk_queue_stopped(q))) + mod_delayed_work(kblockd_workqueue, &q->delay_work, 0); } EXPORT_SYMBOL(blk_run_queue_async); diff --git a/block/blk-throttle.c b/block/blk-throttle.c index 5a58e77..a9664fa 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -929,12 +929,7 @@ throtl_schedule_delayed_work(struct throtl_data *td, unsigned long delay) /* schedule work if limits changed even if no bio is queued */ if (total_nr_queued(td) || td->limits_changed) { - /* - * We might have a work scheduled to be executed in future. - * Cancel that and schedule a new one. - */ - __cancel_delayed_work(dwork); - queue_delayed_work(kthrotld_workqueue, dwork, delay); + mod_delayed_work(kthrotld_workqueue, dwork, delay); throtl_log(td, "schedule work. delay=%lu jiffies=%lu", delay, jiffies); } -- cgit v1.1