Use list_for_each_entry() instead of list_for_each() in the block device

elevator

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/block/elevator.c b/block/elevator.c
index ce866eb..4769a25 100644 (file)
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -112,12 +112,8 @@ static inline int elv_try_merge(struct request *__rq, struct bio *bio)
 static struct elevator_type *elevator_find(const char *name)
 {
        struct elevator_type *e;
-       struct list_head *entry;
-
-       list_for_each(entry, &elv_list) {
-
-               e = list_entry(entry, struct elevator_type, list);
 
+       list_for_each_entry(e, &elv_list, list) {
                if (!strcmp(e->elevator_name, name))
                        return e;
        }
@@ -1116,14 +1112,11 @@ ssize_t elv_iosched_show(request_queue_t *q, char *name)
 {
        elevator_t *e = q->elevator;
        struct elevator_type *elv = e->elevator_type;
-       struct list_head *entry;
+       struct elevator_type *__e;
        int len = 0;
 
        spin_lock(&elv_list_lock);
-       list_for_each(entry, &elv_list) {
-               struct elevator_type *__e;
-
-               __e = list_entry(entry, struct elevator_type, list);
+       list_for_each_entry(__e, &elv_list, list) {
                if (!strcmp(elv->elevator_name, __e->elevator_name))
                        len += sprintf(name+len, "[%s] ", elv->elevator_name);
                else