Subject: [PATCH 1/2] nbd: use list_for_each_entry_safe to make it more consolidated and readable

From: Denis Cheng <[email-masked]>
Date: Thu, 19 Jul 2007 17:34:30 +0800

Thus the traverse of the loop may delete nodes, use the safe version.

Signed-off-by: Denis Cheng <[email-masked]>
---
 drivers/block/nbd.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index c129510..86639c0 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -237,8 +237,7 @@ error_out:
 
 static struct request *nbd_find_request(struct nbd_device *lo, char *handle)
 {
-	struct request *req;
-	struct list_head *tmp;
+	struct request *req, *n;
 	struct request *xreq;
 	int err;
 
@@ -249,8 +248,7 @@ static struct request *nbd_find_request(struct nbd_device *lo, char *handle)
 		goto out;
 
 	spin_lock(&lo->queue_lock);
-	list_for_each(tmp, &lo->queue_head) {
-		req = list_entry(tmp, struct request, queuelist);
+	list_for_each_entry_safe(req, n, &lo->queue_head, queuelist) {
 		if (req != xreq)
 			continue;
 		list_del_init(&req->queuelist);
-- 
1.5.2.2