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[PATCH] list: use list_replace_init() instead of list_splice_init()

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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>
This commit is contained in:
Oleg Nesterov
2006-06-23 02:05:55 -07:00
committed by Linus Torvalds
parent 54e7377035
commit 626ab0e69d
7 changed files with 19 additions and 21 deletions
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block/ll_rw_blk.c
+2 -3
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@@ -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)) {