diff options
| author |   Oleg Nesterov <oleg@tv-sign.ru> | 2006-06-23 02:05:55 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-23 07:43:07 -0700 |
| commit | 626ab0e69d376fa07599af669af8ba92d58e87c1 (patch) | |
| tree | a995e0231e61fab63568bc7bade81dc20c1dae09 /net | |
| parent | [PATCH] list: introduce list_replace() helper (diff) | |
| download | linux-dev-626ab0e69d376fa07599af669af8ba92d58e87c1.tar.xz linux-dev-626ab0e69d376fa07599af669af8ba92d58e87c1.zip | |
[PATCH] list: use list_replace_init() instead of list_splice_init()
list_splice_init(list, head) does unneeded job if it is known that
list_empty(head) == 1. We can use list_replace_init() instead.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/dev.c | 6 | ||||
| -rw-r--r-- | net/core/link_watch.c | 5 |
2 files changed, 5 insertions, 6 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index ab39fe17cb58..195a5e96b2d1 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2980,7 +2980,7 @@ static void netdev_wait_allrefs(struct net_device *dev) static DEFINE_MUTEX(net_todo_run_mutex); void netdev_run_todo(void) { - struct list_head list = LIST_HEAD_INIT(list); + struct list_head list; /* Need to guard against multiple cpu's getting out of order. */ mutex_lock(&net_todo_run_mutex); @@ -2995,9 +2995,9 @@ void netdev_run_todo(void) /* Snapshot list, allow later requests */ spin_lock(&net_todo_list_lock); - list_splice_init(&net_todo_list, &list); + list_replace_init(&net_todo_list, &list); spin_unlock(&net_todo_list_lock); - + while (!list_empty(&list)) { struct net_device *dev = list_entry(list.next, struct net_device, todo_list); diff --git a/net/core/link_watch.c b/net/core/link_watch.c index 646937cc2d84..0f37266411b5 100644 --- a/net/core/link_watch.c +++ b/net/core/link_watch.c @@ -91,11 +91,10 @@ static void rfc2863_policy(struct net_device *dev) /* Must be called with the rtnl semaphore held */ void linkwatch_run_queue(void) { - LIST_HEAD(head); - struct list_head *n, *next; + struct list_head head, *n, *next; spin_lock_irq(&lweventlist_lock); - list_splice_init(&lweventlist, &head); + list_replace_init(&lweventlist, &head); spin_unlock_irq(&lweventlist_lock); list_for_each_safe(n, next, &head) { |