Merge branch 'for-linus' into for-4.12/block

We've added a considerable amount of fixes for stalls and issues
with the blk-mq scheduling in the 4.11 series since forking
off the for-4.12/block branch. We need to do improvements on
top of that for 4.12, so pull in the previous fixes to make
our lives easier going forward.

Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 3cf241b..d76bebb 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -615,9 +615,8 @@
 #define QUEUE_FLAG_FLUSH_NQ    25	/* flush not queueuable */
 #define QUEUE_FLAG_DAX         26	/* device supports DAX */
 #define QUEUE_FLAG_STATS       27	/* track rq completion times */
-#define QUEUE_FLAG_RESTART     28	/* queue needs restart at completion */
-#define QUEUE_FLAG_POLL_STATS  29	/* collecting stats for hybrid polling */
-#define QUEUE_FLAG_REGISTERED  30	/* queue has been registered to a disk */
+#define QUEUE_FLAG_POLL_STATS  28	/* collecting stats for hybrid polling */
+#define QUEUE_FLAG_REGISTERED  29	/* queue has been registered to a disk */
 
 #define QUEUE_FLAG_DEFAULT	((1 << QUEUE_FLAG_IO_STAT) |		\
 				 (1 << QUEUE_FLAG_STACKABLE)	|	\