linux-kernel - [PATCH 1/1] nbd: clear waiting

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Message-ID: <504131ea.3+adybT2Cu/nzX3r%paul.clements@steeleye.com>
Date:	Fri, 31 Aug 2012 17:51:38 -0400
From:	paul.clements@...eleye.com
To:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] nbd: clear waiting_queue on shutdown


From: Paul Clements <paul.clements@...eleye.com>


Signed-off-by: Paul Clements <paul.clements@...eleye.com>
---

 nbd.c |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index d07c9f7..0c03411 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -449,6 +449,14 @@ static void nbd_clear_que(struct nbd_device *nbd)
 		req->errors++;
 		nbd_end_request(req);
 	}
+
+	while (!list_empty(&nbd->waiting_queue)) {
+		req = list_entry(nbd->waiting_queue.next, struct request,
+				 queuelist);
+		list_del_init(&req->queuelist);
+		req->errors++;
+		nbd_end_request(req);
+	}
 }
 
 
@@ -598,6 +606,7 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
 		nbd->file = NULL;
 		nbd_clear_que(nbd);
 		BUG_ON(!list_empty(&nbd->queue_head));
+		BUG_ON(!list_empty(&nbd->waiting_queue));
 		if (file)
 			fput(file);
 		return 0;
--
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