staging: lustre: lnet: socklnd: 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.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
index a710541..cca7b2f 100644 (file)
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
+++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
@@ -1556,6 +1556,7 @@ ksocknal_finalize_zcreq(ksock_conn_t *conn)
 {
        ksock_peer_t *peer = conn->ksnc_peer;
        ksock_tx_t *tx;
+       ksock_tx_t *temp;
        ksock_tx_t *tmp;
        LIST_HEAD(zlist);
 
@@ -1581,9 +1582,7 @@ ksocknal_finalize_zcreq(ksock_conn_t *conn)
 
        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);
        }
@@ -2286,13 +2285,13 @@ ksocknal_free_buffers(void)
        if (!list_empty(&ksocknal_data.ksnd_idle_noop_txs)) {
                struct list_head zlist;
                ksock_tx_t *tx;
+               ksock_tx_t *temp;
 
                list_add(&zlist, &ksocknal_data.ksnd_idle_noop_txs);
                list_del_init(&ksocknal_data.ksnd_idle_noop_txs);
                spin_unlock(&ksocknal_data.ksnd_tx_lock);
 
-               while (!list_empty(&zlist)) {
-                       tx = list_entry(zlist.next, ksock_tx_t, tx_list);
+               list_for_each_entry_safe(tx, temp, &zlist, tx_list) {
                        list_del(&tx->tx_list);
                        LIBCFS_FREE(tx, tx->tx_desc_size);
                }