staging: lustre: lnet: socklnd_proto: 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/klnds/socklnd/socklnd_proto.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_proto.c
index 4499b1b..32cc31e 100644 (file)
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_proto.c
+++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_proto.c
@@ -403,6 +403,7 @@ ksocknal_handle_zcack(ksock_conn_t *conn, __u64 cookie1, __u64 cookie2)
 {
        ksock_peer_t *peer = conn->ksnc_peer;
        ksock_tx_t *tx;
+       ksock_tx_t *temp;
        ksock_tx_t *tmp;
        LIST_HEAD(zlist);
        int count;
@@ -436,8 +437,7 @@ ksocknal_handle_zcack(ksock_conn_t *conn, __u64 cookie1, __u64 cookie2)
 
        spin_unlock(&peer->ksnp_lock);
 
-       while (!list_empty(&zlist)) {
-               tx = list_entry(zlist.next, ksock_tx_t, tx_zc_list);
+       list_for_each_entry_safe(tx, temp, &zlist, tx_zc_list) {
                list_del(&tx->tx_zc_list);
                ksocknal_tx_decref(tx);
        }