commit c4d951ddb66fe1d087447b0ba65c4fa4446f1083
author Kent Overstreet <kmo@daterainc.com> Wed Aug 21 17:49:09 2013 -0700
committer Kent Overstreet <kmo@daterainc.com> Sun Nov 10 21:56:41 2013 -0800
tree 80564725ffa4cfa0d1a02b0a80f419edcd424548
parent 48a915a87f0bd98c3d68d029acf223a2e5116f07

bcache: Fix sysfs splat on shutdown with flash only devs

Whoops.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>

drivers/md/bcache/writeback.c

diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
index 22e21dc..99053b1 100644
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -89,7 +89,7 @@
 {
 	uint64_t ret;
 
-	if (atomic_read(&dc->disk.detaching) ||
+	if (test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags) ||
 	    !dc->writeback_percent)
 		return 0;
 
@@ -404,7 +404,7 @@
 	while (!kthread_should_stop()) {
 		down_write(&dc->writeback_lock);
 		if (!atomic_read(&dc->has_dirty) ||
-		    (!atomic_read(&dc->disk.detaching) &&
+		    (!test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags) &&
 		     !dc->writeback_running)) {
 			up_write(&dc->writeback_lock);
 			set_current_state(TASK_INTERRUPTIBLE);
@@ -437,7 +437,7 @@
 
 			while (delay &&
 			       !kthread_should_stop() &&
-			       !atomic_read(&dc->disk.detaching))
+			       !test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags))
 				delay = schedule_timeout_interruptible(delay);
 		}
 	}