From: Tejun Heo <tj@kernel.org>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
"cgroups@vger.kernel.org" <cgroups@vger.kernel.org>,
Michal Hocko <mhocko@suse.cz>,
Johannes Weiner <hannes@cmpxchg.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Han Ying <yinghan@google.com>,
Glauber Costa <glommer@parallels.com>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Hiroyuki Kamezawa <kamezawa.hiroyuki@gmail.com>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3 6/6] remove __must_check for res_counter_charge_nofail()
Date: Mon, 14 May 2012 13:09:25 -0700 [thread overview]
Message-ID: <20120514200925.GH2366@google.com> (raw)
In-Reply-To: <4FACE184.6020307@jp.fujitsu.com>
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@parallels.com>
> 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@parallels.com>
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
For 3-6,
Reviewed-by: Tejun Heo <tj@kernel.org>
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
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next prev parent reply other threads:[~2012-05-14 20:09 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-11 9:41 [PATCH v3][0/6] memcg: prevent -ENOMEM in pre_destroy() KAMEZAWA Hiroyuki
2012-05-11 9:45 ` [PATCH v3 1/6] memcg: fix error code in hugetlb_force_memcg_empty() KAMEZAWA Hiroyuki
2012-05-11 21:17 ` Andrew Morton
2012-05-14 1:07 ` KAMEZAWA Hiroyuki
2012-05-14 18:15 ` Tejun Heo
2012-05-14 18:32 ` Tejun Heo
2012-05-15 1:10 ` KAMEZAWA Hiroyuki
2012-05-15 15:12 ` Tejun Heo
2012-05-11 9:47 ` [PATCH 2/6] add res_counter_uncharge_until() KAMEZAWA Hiroyuki
2012-05-11 21:19 ` Andrew Morton
2012-05-14 1:10 ` KAMEZAWA Hiroyuki
2012-05-14 10:08 ` Frederic Weisbecker
2012-05-14 10:32 ` KAMEZAWA Hiroyuki
2012-05-14 10:56 ` Frederic Weisbecker
2012-05-14 18:17 ` Tejun Heo
2012-05-11 9:48 ` [PATCH v3 3/6] memcg: use res_counter_uncharge_until in move_parent() KAMEZAWA Hiroyuki
2012-05-11 9:49 ` [PATCH v3 4/6] memcg: move charges to root cgroup if use_hierarchy=0 KAMEZAWA Hiroyuki
2012-05-14 20:14 ` Tejun Heo
2012-05-15 0:04 ` KAMEZAWA Hiroyuki
2012-05-11 9:50 ` [PATCH v3 5/6] memcg: don't uncharge in mem_cgroup_move_account KAMEZAWA Hiroyuki
2012-05-11 9:53 ` [PATCH v3 6/6] remove __must_check for res_counter_charge_nofail() KAMEZAWA Hiroyuki
2012-05-14 20:09 ` Tejun Heo [this message]
2012-05-15 0:02 ` KAMEZAWA Hiroyuki
2012-06-21 20:20 ` [PATCH v3][0/6] memcg: prevent -ENOMEM in pre_destroy() Tejun Heo
2012-06-21 23:27 ` Kamezawa Hiroyuki
2012-06-27 17:58 ` Tejun Heo
2012-06-28 8:33 ` Kamezawa Hiroyuki
2012-06-28 16:06 ` Tejun Heo
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