[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>

1 files changed, 2 insertions, 3 deletions

diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 7eb36c53f4b7..465b54312c59 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -3359,12 +3359,11 @@ EXPORT_SYMBOL(end_that_request_chunk);
  */
 static void blk_done_softirq(struct softirq_action *h)
 {
-        struct list_head *cpu_list;
-        LIST_HEAD(local_list);
+        struct list_head *cpu_list, local_list;
 
         local_irq_disable();
         cpu_list = &__get_cpu_var(blk_cpu_done);
-        list_splice_init(cpu_list, &local_list);
+        list_replace_init(cpu_list, &local_list);
         local_irq_enable();
 
         while (!list_empty(&local_list)) {