block: remove per-queue plugging

Code has been converted over to the new explicit on-stack plugging,
and delay users have been converted to use the new API for that.
So lets kill off the old plugging along with aops->sync_page().

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/block/blk-flush.c b/block/blk-flush.c
index 1e2aa8a8908c..671fa9da7560 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -194,7 +194,6 @@ static void flush_end_io(struct request *flush_rq, int error)
 {
         struct request_queue *q = flush_rq->q;
         struct list_head *running = &q->flush_queue[q->flush_running_idx];
-        bool was_empty = elv_queue_empty(q);
         bool queued = false;
         struct request *rq, *n;
 
@@ -213,7 +212,7 @@ static void flush_end_io(struct request *flush_rq, int error)
         }
 
         /* after populating an empty queue, kick it to avoid stall */
-        if (queued && was_empty)
+        if (queued)
                 __blk_run_queue(q);
 }