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From: Michal Hocko <mhocko@suse.cz>
To: Nikolay Borisov <kernel@kyup.com>
Cc: cgroups@vger.kernel.org, hannes@cmpxchg.org, linux-mm@kvack.org
Subject: Re: Possible bug - LTP failure for memcg
Date: Thu, 14 May 2015 14:09:26 +0200	[thread overview]
Message-ID: <20150514120926.GF6799@dhcp22.suse.cz> (raw)
In-Reply-To: <55536DC9.90200@kyup.com>

On Wed 13-05-15 18:29:13, Nikolay Borisov wrote:
[...]
> memcg_function_test   22  TFAIL  :  ltpapicmd.c:190: input=4095,
> limit_in_bytes=0
> memcg_function_test   23  TFAIL  :  ltpapicmd.c:190: input=4097,
> limit_in_bytes=4096
> memcg_function_test   24  TFAIL  :  ltpapicmd.c:190: input=1,
> limit_in_bytes=0

Before we go and fix these test cases. Do they make any sense at all?
Why should anybody even care that the limit is in page units? I do not
see anything like that mentioned in the documentation. Sure having
the limit in page size units makes a lot of sense from the
implementation POV but should userspace care? Would something break if
we change internals and allow also !page_aligned values? I have hard
time to imagine that.
-- 
Michal Hocko
SUSE Labs

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      parent reply	other threads:[~2015-05-14 12:09 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-13 15:29 Nikolay Borisov
2015-05-14  9:21 ` Michal Hocko
2015-05-14  9:23   ` Michal Hocko
2015-05-14 10:35     ` Cyril Hrubis
2015-05-14 11:31       ` Michal Hocko
2015-05-14 12:36         ` Cyril Hrubis
2015-05-14 10:31   ` Cyril Hrubis
2015-05-14 11:56     ` Michal Hocko
2015-05-14 12:01       ` Cyril Hrubis
2015-05-14 12:12         ` Michal Hocko
2015-05-14 12:38           ` Cyril Hrubis
2015-05-14 14:30             ` Michal Hocko
2015-05-14 14:44               ` Cyril Hrubis
2015-05-14 14:49                 ` Michal Hocko
2015-05-14 15:27                   ` Cyril Hrubis
2015-05-14 12:09 ` Michal Hocko [this message]

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