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async: simplify lowest_in_progress() 

The code in lowest_in_progress() are duplicated in two branches,
simplify them.

tj: Minor indentation adjustment.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
This commit is contained in:
Lai Jiangshan 2013-03-12 13:59:13 -07:00 committed by Tejun Heo
parent 6dbe51c251
commit 92266d6ef6
1 changed files with 8 additions and 12 deletions
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20
kernel/async.c
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@ -84,24 +84,20 @@ static atomic_t entry_count;
static async_cookie_t lowest_in_progress(struct async_domain *domain)
{
struct async_entry *first = NULL;
struct list_head *pending;
async_cookie_t ret = ASYNC_COOKIE_MAX;
unsigned long flags;
spin_lock_irqsave(&async_lock, flags);
if (domain) {
if (!list_empty(&domain->pending))
first = list_first_entry(&domain->pending,
struct async_entry, domain_list);
} else {
if (!list_empty(&async_global_pending))
first = list_first_entry(&async_global_pending,
struct async_entry, global_list);
}
if (domain)
pending = &domain->pending;
else
pending = &async_global_pending;
if (first)
ret = first->cookie;
if (!list_empty(pending))
ret = list_first_entry(pending, struct async_entry,
domain_list)->cookie;
spin_unlock_irqrestore(&async_lock, flags);
return ret;