From: Jens Axboe <jens.axboe@oracle.com>
Date: Tue, 29 Apr 2008 17:12:35 +0000 (+0200)
Subject: dm: use unlocked variants of queue flag check/set
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c9a3f6d6f541915bd7451fc7e9cb23a8b33a3ab8;p=linux-beck.git

dm: use unlocked variants of queue flag check/set

dm.c already provides mutual exclusion through ->map_lock.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 73326e7c54bf..94116eaf4709 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -873,13 +873,11 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q)
 	q->max_hw_sectors = t->limits.max_hw_sectors;
 	q->seg_boundary_mask = t->limits.seg_boundary_mask;
 	q->bounce_pfn = t->limits.bounce_pfn;
-	/* XXX: the below will probably go bug. must ensure there can be no
-	 * concurrency on queue_flags, and use the unlocked versions...
-	 */
+
 	if (t->limits.no_cluster)
-		queue_flag_clear(QUEUE_FLAG_CLUSTER, q);
+		queue_flag_clear_unlocked(QUEUE_FLAG_CLUSTER, q);
 	else
-		queue_flag_set(QUEUE_FLAG_CLUSTER, q);
+		queue_flag_set_unlocked(QUEUE_FLAG_CLUSTER, q);
 
 }