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async: simplify lowest_in_progress()

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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
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

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) 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; async_cookie_t ret = ASYNC_COOKIE_MAX;
unsigned long flags; unsigned long flags;
spin_lock_irqsave(&async_lock, flags); spin_lock_irqsave(&async_lock, flags);
if (domain) { if (domain)
if (!list_empty(&domain->pending)) pending = &domain->pending;
first = list_first_entry(&domain->pending, else
struct async_entry, domain_list); pending = &async_global_pending;
} else {
if (!list_empty(&async_global_pending))
first = list_first_entry(&async_global_pending,
struct async_entry, global_list);
}
if (first) if (!list_empty(pending))
ret = first->cookie; ret = list_first_entry(pending, struct async_entry,
domain_list)->cookie;
spin_unlock_irqrestore(&async_lock, flags); spin_unlock_irqrestore(&async_lock, flags);
return ret; return ret;