From: Balbir Singh <balbir@linux.vnet.ibm.com>
To: righi.andrea@gmail.com
Cc: linux-mm@kvack.org, Sudhir Kumar <skumar@linux.vnet.ibm.com>,
YAMAMOTO Takashi <yamamoto@valinux.co.jp>,
Paul Menage <menage@google.com>,
lizf@cn.fujitsu.com, linux-kernel@vger.kernel.org,
Pavel Emelianov <xemul@openvz.org>,
Andrew Morton <akpm@linux-foundation.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [-mm][PATCH 2/4] Setup the memrlimit controller (v5)
Date: Wed, 11 Jun 2008 23:03:26 +0530 [thread overview]
Message-ID: <48500C66.7040807@linux.vnet.ibm.com> (raw)
In-Reply-To: <4850070F.6060305@gmail.com>
Andrea Righi wrote:
> Balbir Singh wrote:
>> +static int memrlimit_cgroup_write_strategy(char *buf, unsigned long
>> long *tmp)
>> +{
>> + *tmp = memparse(buf, &buf);
>> + if (*buf != '\0')
>> + return -EINVAL;
>> +
>> + *tmp = PAGE_ALIGN(*tmp);
>> + return 0;
>> +}
>
> We shouldn't use PAGE_ALIGN() here, otherwise we limit the address space
> to 4GB on 32-bit architectures (that could be reasonable, because this
> is a per-cgroup limit and not per-process).
>
You mean un-reasonable?
> Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
Seems fair enough.
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
--
Warm Regards,
Balbir Singh
Linux Technology Center
IBM, ISTL
WARNING: multiple messages have this Message-ID (diff)
From: Balbir Singh <balbir@linux.vnet.ibm.com>
To: righi.andrea@gmail.com
Cc: linux-mm@kvack.org, Sudhir Kumar <skumar@linux.vnet.ibm.com>,
YAMAMOTO Takashi <yamamoto@valinux.co.jp>,
Paul Menage <menage@google.com>,
lizf@cn.fujitsu.com, linux-kernel@vger.kernel.org,
Pavel Emelianov <xemul@openvz.org>,
Andrew Morton <akpm@linux-foundation.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [-mm][PATCH 2/4] Setup the memrlimit controller (v5)
Date: Wed, 11 Jun 2008 23:03:26 +0530 [thread overview]
Message-ID: <48500C66.7040807@linux.vnet.ibm.com> (raw)
In-Reply-To: <4850070F.6060305@gmail.com>
Andrea Righi wrote:
> Balbir Singh wrote:
>> +static int memrlimit_cgroup_write_strategy(char *buf, unsigned long
>> long *tmp)
>> +{
>> + *tmp = memparse(buf, &buf);
>> + if (*buf != '\0')
>> + return -EINVAL;
>> +
>> + *tmp = PAGE_ALIGN(*tmp);
>> + return 0;
>> +}
>
> We shouldn't use PAGE_ALIGN() here, otherwise we limit the address space
> to 4GB on 32-bit architectures (that could be reasonable, because this
> is a per-cgroup limit and not per-process).
>
You mean un-reasonable?
> Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
Seems fair enough.
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
--
Warm Regards,
Balbir Singh
Linux Technology Center
IBM, ISTL
--
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next prev parent reply other threads:[~2008-06-11 17:54 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-21 15:29 [-mm][PATCH 0/4] Add memrlimit controller (v5) Balbir Singh
2008-05-21 15:29 ` Balbir Singh
2008-05-21 15:29 ` [-mm][PATCH 1/4] Add memrlimit controller documentation (v5) Balbir Singh
2008-05-21 15:29 ` Balbir Singh
2008-05-22 4:16 ` Andrew Morton
2008-05-22 4:16 ` Andrew Morton
2008-05-22 10:13 ` Balbir Singh
2008-05-22 10:13 ` Balbir Singh
2008-05-21 15:29 ` [-mm][PATCH 2/4] Setup the memrlimit controller (v5) Balbir Singh
2008-05-21 15:29 ` Balbir Singh
2008-05-22 4:18 ` Andrew Morton
2008-05-22 4:18 ` Andrew Morton
2008-05-22 10:14 ` Balbir Singh
2008-05-22 10:14 ` Balbir Singh
2008-06-11 17:10 ` Andrea Righi
2008-06-11 17:10 ` Andrea Righi
2008-06-11 17:33 ` Balbir Singh [this message]
2008-06-11 17:33 ` Balbir Singh
2008-06-11 18:48 ` Andrea Righi
2008-06-11 18:48 ` Andrea Righi
2008-06-11 19:15 ` Andrew Morton
2008-06-11 19:15 ` Andrew Morton
2008-06-11 20:17 ` Andrea Righi
2008-06-11 20:17 ` Andrea Righi
2008-06-11 20:43 ` Andrew Morton
2008-06-11 20:43 ` Andrew Morton
2008-06-11 22:47 ` Andrea Righi
2008-06-11 22:47 ` Andrea Righi
2008-06-11 22:55 ` Andrew Morton
2008-06-11 22:55 ` Andrew Morton
2008-06-11 23:04 ` Andrea Righi
2008-06-11 23:04 ` Andrea Righi
2008-06-12 6:13 ` Balbir Singh
2008-06-12 6:13 ` Balbir Singh
2008-06-12 8:52 ` Andrea Righi
2008-06-12 8:52 ` Andrea Righi
2008-06-12 9:02 ` Andrew Morton
2008-06-12 9:02 ` Andrew Morton
2008-06-12 9:12 ` Andrea Righi
2008-06-12 9:12 ` Andrea Righi
2008-06-12 17:02 ` [PATCH -mm] PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures Andrea Righi
2008-06-12 17:02 ` Andrea Righi
2008-06-12 22:14 ` Andrea Righi
2008-06-12 22:14 ` Andrea Righi
2008-06-13 9:37 ` Balbir Singh
2008-06-13 9:37 ` Balbir Singh
2008-06-13 9:45 ` Li Zefan
2008-06-13 9:45 ` Li Zefan
2008-05-21 15:29 ` [-mm][PATCH 3/4] cgroup mm owner callback changes to add task info (v5) Balbir Singh
2008-05-21 15:29 ` Balbir Singh
2008-05-22 4:19 ` Andrew Morton
2008-05-22 4:19 ` Andrew Morton
2008-05-22 10:14 ` Balbir Singh
2008-05-22 10:14 ` Balbir Singh
2008-05-21 15:30 ` [-mm][PATCH 4/4] Add memrlimit controller accounting and control (v5) Balbir Singh
2008-05-21 15:30 ` Balbir Singh
2008-05-21 17:20 ` Vivek Goyal
2008-05-21 17:20 ` Vivek Goyal
2008-05-22 4:41 ` Balbir Singh
2008-05-22 4:41 ` Balbir Singh
2008-05-22 4:24 ` Andrew Morton
2008-05-22 4:24 ` Andrew Morton
2008-05-22 10:15 ` Balbir Singh
2008-05-22 10:15 ` Balbir Singh
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