From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alasdair G Kergon <agk@redhat.com>
Subject: Re: [dm-devel] [PATCH] md/dm-ioctl.c: optimize memory allocation
	in copy_params
Date: Tue, 22 Jul 2014 02:23:52 +0100
Message-ID: <20140722012352.GD6822@agk-dp.fab.redhat.com>
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To: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Cc: Mikulas Patocka <mpatocka@redhat.com>, "xinhui.pan" <xinhuix.pan@intel.com>, linux-kernel@vger.kernel.org, agk@redhat.com, snitzer@redhat.com, dm-devel@redhat.com, "Liu, ShuoX" <shuox.liu@intel.com>
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>>> On 2014/7/9 6:39, Mikulas Patocka wrote:
>> Which ioctl with more than 16kB
>> arguments do you use? 

Unanswered.  Let's ask the same question in a different way:

Please supply the output of these three commands on the real-world system on
which you believe that that particular allocation is causing you a problem:
  dmsetup info -c
  dmsetup table
  dmsetup status

Alasdair