From: Tejun Heo Date: Thu, 20 Sep 2012 21:09:30 +0000 (-0700) Subject: block: fix request_queue->flags initialization X-Git-Tag: firefly_0821_release~7541^2~472 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2101aa5bb084931f22fa08cacd6d69c80afade7f;p=firefly-linux-kernel-4.4.55.git block: fix request_queue->flags initialization commit 60ea8226cbd5c8301f9a39edc574ddabcb8150e0 upstream. A queue newly allocated with blk_alloc_queue_node() has only QUEUE_FLAG_BYPASS set. For request-based drivers, blk_init_allocated_queue() is called and q->queue_flags is overwritten with QUEUE_FLAG_DEFAULT which doesn't include BYPASS even though the initial bypass is still in effect. In blk_init_allocated_queue(), or QUEUE_FLAG_DEFAULT to q->queue_flags instead of overwriting. Signed-off-by: Tejun Heo Acked-by: Vivek Goyal Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman --- diff --git a/block/blk-core.c b/block/blk-core.c index 35ae52df6b6d..2f49f43c4565 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -524,7 +524,7 @@ blk_init_allocated_queue(struct request_queue *q, request_fn_proc *rfn, q->request_fn = rfn; q->prep_rq_fn = NULL; q->unprep_rq_fn = NULL; - q->queue_flags = QUEUE_FLAG_DEFAULT; + q->queue_flags |= QUEUE_FLAG_DEFAULT; /* Override internal queue lock with supplied lock pointer */ if (lock)