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 <redacted>
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 <redacted>
Signed-off-by: KAMEZAWA Hiroyuki <redacted>

For 3-6,

 Reviewed-by: Tejun Heo [off-list ref]

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.

Thank you.

-- 
tejun