staging: lustre: ldlm: minor list_entry improvements in ldlm_request.c

Small clarify improvements, and one local variable avoided.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/ldlm/ldlm_request.c

@@ -1656,7 +1656,7 @@ int ldlm_cli_cancel_list(struct list_head *cancels, int count,
 	 */
 	while (count > 0) {
 		LASSERT(!list_empty(cancels));
-		lock = list_entry(cancels->next, struct ldlm_lock, l_bl_ast);
+		lock = list_first_entry(cancels, struct ldlm_lock, l_bl_ast);
 		LASSERT(lock->l_conn_export);
 
 		if (exp_connect_cancelset(lock->l_conn_export)) {
@@ -1780,7 +1780,7 @@ EXPORT_SYMBOL(ldlm_cli_cancel_unused);
 static int ldlm_resource_foreach(struct ldlm_resource *res,
 				 ldlm_iterator_t iter, void *closure)
 {
-	struct list_head *tmp, *next;
+	struct ldlm_lock *tmp;
 	struct ldlm_lock *lock;
 	int rc = LDLM_ITER_CONTINUE;
 
@@ -1788,18 +1788,14 @@ static int ldlm_resource_foreach(struct ldlm_resource *res,
 		return LDLM_ITER_CONTINUE;
 
 	lock_res(res);
-	list_for_each_safe(tmp, next, &res->lr_granted) {
-		lock = list_entry(tmp, struct ldlm_lock, l_res_link);
-
+	list_for_each_entry_safe(lock, tmp, &res->lr_granted, l_res_link) {
 		if (iter(lock, closure) == LDLM_ITER_STOP) {
 			rc = LDLM_ITER_STOP;
 			goto out;
 		}
 	}
 
-	list_for_each_safe(tmp, next, &res->lr_waiting) {
-		lock = list_entry(tmp, struct ldlm_lock, l_res_link);
-
+	list_for_each_entry_safe(lock, tmp, &res->lr_waiting, l_res_link) {
 		if (iter(lock, closure) == LDLM_ITER_STOP) {
 			rc = LDLM_ITER_STOP;
 			goto out;