Re: [PATCH v3 6/6] remove __must_check for res_counter_charge_nofail()

From: KAMEZAWA Hiroyuki
Date: Mon May 14 2012 - 20:04:34 EST

(2012/05/15 5:09), Tejun Heo wrote:

> On Fri, May 11, 2012 at 06:53:08PM +0900, KAMEZAWA Hiroyuki wrote:
>> I picked this up from Costa's slub memcg series. For fixing added warning
>> by patch 4.
>> ==
>> From: Glauber Costa <glommer@xxxxxxxxxxxxx>
>> Subject: [PATCH 6/6] remove __must_check for res_counter_charge_nofail()
>> Since we will succeed with the allocation no matter what, there
>> isn't the need to use __must_check with it. It can very well
>> be optional.
>> Signed-off-by: Glauber Costa <glommer@xxxxxxxxxxxxx>
>> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
> For 3-6,
> Reviewed-by: Tejun Heo <tj@xxxxxxxxxx>
> Thanks a lot for doing this. This doesn't solve all the failure paths
> tho. ie. what about -EINTR failures from lock contention?
> pre_destroy() would probably need delay and retry logic with
> WARN_ON_ONCE() on !-EINTR failures.

Yes, I'll do more work. I tend to split series, sorry.


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