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workqueue: simplify the apply_workqueue_attrs_locked() 

If the apply_wqattrs_prepare() returns NULL, it has already cleaned up
the related resources, so it can return directly and avoid calling the
clean up function again.

This doesn't introduce any functional changes.

Signed-off-by: wanghaibin <wanghaibin.wang@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
wanghaibin 2016-01-07 20:38:59 +08:00 committed by Tejun Heo
parent 82607adcf9
commit 6201171e3b
1 changed files with 4 additions and 7 deletions
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11
kernel/workqueue.c
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@ -3651,7 +3651,6 @@ static int apply_workqueue_attrs_locked(struct workqueue_struct *wq,
const struct workqueue_attrs *attrs)
{
struct apply_wqattrs_ctx *ctx;
int ret = -ENOMEM;
/* only unbound workqueues can change attributes */
if (WARN_ON(!(wq->flags & WQ_UNBOUND)))
@ -3662,16 +3661,14 @@ static int apply_workqueue_attrs_locked(struct workqueue_struct *wq,
return -EINVAL;
ctx = apply_wqattrs_prepare(wq, attrs);
if (!ctx)
return -ENOMEM;
/* the ctx has been prepared successfully, let's commit it */
if (ctx) {
apply_wqattrs_commit(ctx);
ret = 0;
}
apply_wqattrs_commit(ctx);
apply_wqattrs_cleanup(ctx);
return ret;
return 0;
}
/**