From: Sebastian Andrzej Siewior Date: Tue, 27 Mar 2018 16:24:15 +0200 Subject: [PATCH 034/353] dm rq: remove BUG_ON(!irqs_disabled) check Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=8a4df0ffc36cba9a71e739f5838df2eb08896256 In commit 052189a2ec95 ("dm: remove superfluous irq disablement in dm_request_fn") the spin_lock_irq() was replaced with spin_lock() + a check for disabled interrupts. Later the locking part was removed in commit 2eb6e1e3aa87 ("dm: submit stacked requests in irq enabled context") but the BUG_ON() check remained. Since the original purpose for the "are-irqs-off" check is gone (the ->queue_lock has been removed) remove it. Cc: Keith Busch Cc: Mike Snitzer Signed-off-by: Sebastian Andrzej Siewior --- drivers/md/dm-rq.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c index 2957a3763f01..bc8192b4e7b2 100644 --- a/drivers/md/dm-rq.c +++ b/drivers/md/dm-rq.c @@ -689,7 +689,6 @@ static void dm_old_request_fn(struct request_queue *q) /* Establish tio->ti before queuing work (map_tio_request) */ tio->ti = ti; kthread_queue_work(&md->kworker, &tio->work); - BUG_ON(!irqs_disabled()); } }