summaryrefslogtreecommitdiff
path: root/patches/dm-make-rt-aware.patch
blob: 0ec19f8c25a225d4a77182f3ea1feb5be0410189 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Subject: dm: Make rt aware
From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 14 Nov 2011 23:06:09 +0100

Use the BUG_ON_NORT variant for the irq_disabled() checks. RT has
interrupts legitimately enabled here as we cant deadlock against the
irq thread due to the "sleeping spinlocks" conversion.

Reported-by: Luis Claudio R. Goncalves <lclaudio@uudg.org>

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 drivers/md/dm-rq.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
@@ -667,7 +667,7 @@ static void dm_old_request_fn(struct req
 		/* Establish tio->ti before queuing work (map_tio_request) */
 		tio->ti = ti;
 		kthread_queue_work(&md->kworker, &tio->work);
-		BUG_ON(!irqs_disabled());
+		BUG_ON_NONRT(!irqs_disabled());
 	}
 }