From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ross Lagerwall <ross.lagerwall@citrix.com>
Subject: Re: [PATCH 22/29] tools/libxl: Allow limiting amount
	copied by datacopier
Date: Thu, 11 Sep 2014 13:23:17 +0100
Message-ID: <54119435.3030608@citrix.com>
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To: Ian Campbell <Ian.Campbell@citrix.com>, Andrew Cooper <andrew.cooper3@citrix.com>
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On 09/11/2014 01:02 PM, Ian Campbell wrote:
> On Wed, 2014-09-10 at 18:11 +0100, Andrew Cooper wrote:
>> From: Ross Lagerwall <ross.lagerwall@citrix.com>
>>
>> Add a parameter, maxread, to limit the amount of data read from the
>> source fd of a datacopier.
>
> Why is this useful?
>

It is useful for splicing _part_ of a stream from one fd to another 
rather than splicing the whole stream.  i.e. it is used in this series 
for writing out the emulator context part of the libxl stream to a qemu 
save file.

-- 
Ross Lagerwall