staging: lustre: lnet: 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_cb.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_cb.c
index efb71693fccc7269418bb8fd7cb72d1fa3dc5c61..976fd78926e046d265ed68424262a39a164d27f1 100644 (file)
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_cb.c
+++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_cb.c
@@ -2354,13 +2354,12 @@ static inline void
 ksocknal_flush_stale_txs(ksock_peer_t *peer)
 {
        ksock_tx_t *tx;
+       ksock_tx_t *tmp;
        LIST_HEAD(stale_txs);
 
        write_lock_bh(&ksocknal_data.ksnd_global_lock);
 
-       while (!list_empty(&peer->ksnp_tx_queue)) {
-               tx = list_entry(peer->ksnp_tx_queue.next, ksock_tx_t, tx_list);
-
+       list_for_each_entry_safe(tx, tmp, &peer->ksnp_tx_queue, tx_list) {
                if (!cfs_time_aftereq(cfs_time_current(),
                                      tx->tx_deadline))
                        break;