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Re: [PATCH 1/4] workqueue: introduce get_pwq_unlocked()

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  Re: [PATCH 1/4] workqueue: introduce get_pwq_unlocked() Tejun Heo <tj@kernel.org> - 2015-06-04 03:10 +0200

#1158146 — Re: [PATCH 1/4] workqueue: introduce get_pwq_unlocked()

Hello,

On Wed, Jun 03, 2015 at 10:29:49PM +0800, Lai Jiangshan wrote:
> attrs management code may reuse existed pwq and it has open code

                                  existing

> to do "lock();get_pwq();unlock()", we move this open code into
> get_pwq_unlocked().
> 
> get_pwq_unlocked() will also be used in later patches to allow
> apply_wqattrs_prepare() to resue the original default or per-node pwq.

                             reuse

>  /**
> + * get_pwq_unlocked - get_pwq() with surrounding pool lock/unlock
> + * @pwq: pool_workqueue to get (should not %NULL)

                                   should not be %NULL

> + *
> + * get_pwq() with locking.  The caller should have at least an owned
> + * reference on @pwq to match the guarantees required by get_pwq().

      The caller should have a reference on @pwq.

Thanks.

-- 
tejun
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