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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 27 Mar 2018 16:24:15 +0200
Subject: [PATCH 034/354] dm rq: remove BUG_ON(!irqs_disabled) check
Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=5416350ddb9932f9225dc0a1f73aae78f476a89a
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 <keith.busch@intel.com>
Cc: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
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());
}
}
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