linux-kernel - Re: [PATCHv6 1/3] rdmacg: Added rdma cgroup controller

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Message-ID: <56CF12B9.5060709@mellanox.com>
Date:	Thu, 25 Feb 2016 16:42:01 +0200
From:	Haggai Eran <haggaie@...lanox.com>
To:	Parav Pandit <pandit.parav@...il.com>
CC:	<cgroups@...r.kernel.org>, <linux-doc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-rdma@...r.kernel.org>,
	Tejun Heo <tj@...nel.org>, <lizefan@...wei.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Doug Ledford <dledford@...hat.com>,
	Liran Liss <liranl@...lanox.com>,
	"Hefty, Sean" <sean.hefty@...el.com>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Jonathan Corbet <corbet@....net>, <james.l.morris@...cle.com>,
	<serge@...lyn.com>, Or Gerlitz <ogerlitz@...lanox.com>,
	Matan Barak <matanb@...lanox.com>, <raindel@...lanox.com>,
	<akpm@...ux-foundation.org>,
	<linux-security-module@...r.kernel.org>
Subject: Re: [PATCHv6 1/3] rdmacg: Added rdma cgroup controller

On 25/02/2016 16:26, Parav Pandit wrote:
>> Can we call kfree() with spin_lock held? All these years I tend to
>> avoid doing so.
> Also it doesn't look correct to hold the lock while freeing the memory
> which is totally unrelated to the lock.
> With that I think current code appears ok with exception that its
> duplicated at two place for code readability around lock.
> What say?
Yes, the only thing that bothered me there was the duplication.