[RESEND] bcache: Don't reinvent the wheel but use existing llist API

From: Byungchul Park
Date: Thu May 11 2017 - 20:33:56 EST


Although llist provides proper APIs, they are not used. Make them used.

Signed-off-by: Byungchul Park <byungchul.park@xxxxxxx>
---
drivers/md/bcache/closure.c | 17 +++--------------
1 file changed, 3 insertions(+), 14 deletions(-)

diff --git a/drivers/md/bcache/closure.c b/drivers/md/bcache/closure.c
index 864e673..1841d03 100644
--- a/drivers/md/bcache/closure.c
+++ b/drivers/md/bcache/closure.c
@@ -64,27 +64,16 @@ void closure_put(struct closure *cl)
void __closure_wake_up(struct closure_waitlist *wait_list)
{
struct llist_node *list;
- struct closure *cl;
+ struct closure *cl, *t;
struct llist_node *reverse = NULL;

list = llist_del_all(&wait_list->list);

/* We first reverse the list to preserve FIFO ordering and fairness */
-
- while (list) {
- struct llist_node *t = list;
- list = llist_next(list);
-
- t->next = reverse;
- reverse = t;
- }
+ reverse = llist_reverse_order(list);

/* Then do the wakeups */
-
- while (reverse) {
- cl = container_of(reverse, struct closure, list);
- reverse = llist_next(reverse);
-
+ llist_for_each_entry_safe(cl, t, reverse, list) {
closure_set_waiting(cl, 0);
closure_sub(cl, CLOSURE_WAITING + 1);
}
--
1.9.1