From: zhong jiang <zhongjiang@huawei.com>
To: <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>
Cc: <qiuxishi@huawei.com>, <guohanjun@huawei.com>,
<zhangdianfang@huawei.com>
Subject: memory-hotplug have such a problem.
Date: Mon, 26 Oct 2015 16:31:30 +0800 [thread overview]
Message-ID: <562DE4E2.2040401@huawei.com> (raw)
when I test the memory online or offline, I find the problem that
memory online always return an error. I peform the operation as follow:
cd /sys/device/system/memory/
echo online > state
it always print "-bash: echo: write error: Operation not permitted".
By my alalysis, I find that the error happen in the memory_notifier(MEM_GOING_ONLINE,&arg)
in the function(online_pages()).
The problem occur in the latest kernel versin (linux 4.3.0 -rc4) , but In the lower version
(linux 3.10) is correct. I think it may be caused by the confilct.
Thanks
zhongjiang
reply other threads:[~2015-10-26 8:36 UTC|newest]
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