rt-patches/0213-dm-Make-rt-aware.patch

   1 From 0aeaa6f6ab349b92850f8413a8204e8513721bec Mon Sep 17 00:00:00 2001
   2 From: Thomas Gleixner <tglx@linutronix.de>
   3 Date: Mon, 14 Nov 2011 23:06:09 +0100
   4 Subject: [PATCH 213/366] dm: Make rt aware
   5
   6 Use the BUG_ON_NORT variant for the irq_disabled() checks. RT has
   7 interrupts legitimately enabled here as we cant deadlock against the
   8 irq thread due to the "sleeping spinlocks" conversion.
   9
  10 Reported-by: Luis Claudio R. Goncalves <lclaudio@uudg.org>
  11
  12 Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
  13 ---
  14  drivers/md/dm.c | 2 +-
  15  1 file changed, 1 insertion(+), 1 deletion(-)
  16
  17 diff --git a/drivers/md/dm.c b/drivers/md/dm.c
  18 index 3384a3e..170a3c2 100644
  19 --- a/drivers/md/dm.c
  20 +++ b/drivers/md/dm.c
  21 @@ -2127,7 +2127,7 @@ static void dm_request_fn(struct request_queue *q)
  22                 /* Establish tio->ti before queuing work (map_tio_request) */
  23                 tio->ti = ti;
  24                 queue_kthread_work(&md->kworker, &tio->work);
  25 -               BUG_ON(!irqs_disabled());
  26 +               BUG_ON_NONRT(!irqs_disabled());
  27         }
  28
  29         goto out;
  30 --
  31 1.9.1
  32