From 43829731dd372d04d6706c51052b9dabab9ca356 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 20 Aug 2012 14:51:24 -0700 Subject: workqueue: deprecate flush[_delayed]_work_sync() flush[_delayed]_work_sync() are now spurious. Mark them deprecated and convert all users to flush[_delayed]_work(). If you're cc'd and wondering what's going on: Now all workqueues are non-reentrant and the regular flushes guarantee that the work item is not pending or running on any CPU on return, so there's no reason to use the sync flushes at all and they're going away. This patch doesn't make any functional difference. Signed-off-by: Tejun Heo Cc: Russell King Cc: Paul Mundt Cc: Ian Campbell Cc: Jens Axboe Cc: Mattia Dongili Cc: Kent Yoder Cc: David Airlie Cc: Jiri Kosina Cc: Karsten Keil Cc: Bryan Wu Cc: Benjamin Herrenschmidt Cc: Alasdair Kergon Cc: Mauro Carvalho Chehab Cc: Florian Tobias Schandinat Cc: David Woodhouse Cc: "David S. Miller" Cc: linux-wireless@vger.kernel.org Cc: Anton Vorontsov Cc: Sangbeom Kim Cc: "James E.J. Bottomley" Cc: Greg Kroah-Hartman Cc: Eric Van Hensbergen Cc: Takashi Iwai Cc: Steven Whitehouse Cc: Petr Vandrovec Cc: Mark Fasheh Cc: Christoph Hellwig Cc: Avi Kivity --- drivers/block/xen-blkfront.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/block') diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 2c2d2e5c1597..007db8986e84 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -670,7 +670,7 @@ static void xlvbd_release_gendisk(struct blkfront_info *info) spin_unlock_irqrestore(&info->io_lock, flags); /* Flush gnttab callback work. Must be done with no locks held. */ - flush_work_sync(&info->work); + flush_work(&info->work); del_gendisk(info->gd); @@ -719,7 +719,7 @@ static void blkif_free(struct blkfront_info *info, int suspend) spin_unlock_irq(&info->io_lock); /* Flush gnttab callback work. Must be done with no locks held. */ - flush_work_sync(&info->work); + flush_work(&info->work); /* Free resources associated with old device channel. */ if (info->ring_ref != GRANT_INVALID_REF) { -- cgit v1.2.3 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 --- drivers/block/floppy.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/block') diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index a7d6347aaa79..55a5bc002c06 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -672,7 +672,6 @@ static void __reschedule_timeout(int drive, const char *message) if (drive == current_reqD) drive = current_drive; - __cancel_delayed_work(&fd_timeout); if (drive < 0 || drive >= N_DRIVE) { delay = 20UL * HZ; @@ -680,7 +679,7 @@ static void __reschedule_timeout(int drive, const char *message) } else delay = UDP->timeout; - queue_delayed_work(floppy_wq, &fd_timeout, delay); + mod_delayed_work(floppy_wq, &fd_timeout, delay); if (UDP->flags & FD_DEBUG) DPRINT("reschedule timeout %s\n", message); timeout_message = message; -- cgit v1.2.3 From 136b5721d75a62a8f02c601c89122e32c1a85a84 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 21 Aug 2012 13:18:24 -0700 Subject: workqueue: deprecate __cancel_delayed_work() Now that cancel_delayed_work() can be safely called from IRQ handlers, there's no reason to use __cancel_delayed_work(). Use cancel_delayed_work() instead of __cancel_delayed_work() and mark the latter deprecated. Signed-off-by: Tejun Heo Acked-by: Jens Axboe Cc: Jiri Kosina Cc: Roland Dreier Cc: Tomi Valkeinen --- drivers/block/floppy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/block') diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 55a5bc002c06..17c675c52295 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -890,7 +890,7 @@ static void unlock_fdc(void) raw_cmd = NULL; command_status = FD_COMMAND_NONE; - __cancel_delayed_work(&fd_timeout); + cancel_delayed_work(&fd_timeout); do_floppy = NULL; cont = NULL; clear_bit(0, &fdc_busy); -- cgit v1.2.3