From: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Date: Fri, 11 Mar 2016 20:00:15 +0000 (+0530)
Subject: staging: lustre: lnet: lib-move: Use list_for_each_entry_safe
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=24f695909440b79b04bb75205384c9772e4c7d0a;p=linux-beck.git

staging: lustre: lnet: lib-move: Use list_for_each_entry_safe

Doubly linked lists which are  iterated  using list_empty
and list_entry macros have been replaced with list_for_each_entry_safe
macro.
This makes the iteration simpler and more readable.

This patch replaces the while loop containing list_empty and list_entry
with list_for_each_entry_safe.

This was done with Coccinelle.

@@
expression E1;
identifier I1, I2;
type T;
iterator name list_for_each_entry_safe;
@@

T *I1;
+ T *tmp;
...
- while (list_empty(&E1) == 0)
+ list_for_each_entry_safe (I1, tmp, &E1, I2)
{
...when != T *I1;
- I1 = list_entry(E1.next, T, I2);
...
}

Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/lustre/lnet/lnet/lib-move.c b/drivers/staging/lustre/lnet/lnet/lib-move.c
index b8217040e743..0009a8de77d5 100644
--- a/drivers/staging/lustre/lnet/lnet/lib-move.c
+++ b/drivers/staging/lustre/lnet/lnet/lib-move.c
@@ -50,6 +50,7 @@ int
 lnet_fail_nid(lnet_nid_t nid, unsigned int threshold)
 {
 	lnet_test_peer_t *tp;
+	lnet_test_peer_t *temp;
 	struct list_head *el;
 	struct list_head *next;
 	struct list_head cull;
@@ -88,9 +89,7 @@ lnet_fail_nid(lnet_nid_t nid, unsigned int threshold)
 
 	lnet_net_unlock(0);
 
-	while (!list_empty(&cull)) {
-		tp = list_entry(cull.next, lnet_test_peer_t, tp_list);
-
+	list_for_each_entry_safe(tp, temp, &cull, tp_list) {
 		list_del(&tp->tp_list);
 		LIBCFS_FREE(tp, sizeof(*tp));
 	}
@@ -101,6 +100,7 @@ static int
 fail_peer(lnet_nid_t nid, int outgoing)
 {
 	lnet_test_peer_t *tp;
+	lnet_test_peer_t *temp;
 	struct list_head *el;
 	struct list_head *next;
 	struct list_head cull;
@@ -147,8 +147,7 @@ fail_peer(lnet_nid_t nid, int outgoing)
 
 	lnet_net_unlock(0);
 
-	while (!list_empty(&cull)) {
-		tp = list_entry(cull.next, lnet_test_peer_t, tp_list);
+	list_for_each_entry_safe(tp, temp, &cull, tp_list) {
 		list_del(&tp->tp_list);
 
 		LIBCFS_FREE(tp, sizeof(*tp));