Re: [linux-next] splice call weird results

[Cong Wang]

On Tue, May 27, 2014 at 3:27 AM, Cyrill Gorcunov <gorcunov@xxxxxxxxx> wrote:
> On Tue, May 27, 2014 at 01:20:13PM +0300, Kirill A. Shutemov wrote:
>> Cyrill Gorcunov wrote:
>> > Hi! While been trying to run criu on linux-next (due to recent Kirill's patch related
>> > to /proc/pid/clear_refs with THP enabled) I noticed that it fails dumping programs when
>> > moves data from memory pages into an image file. So I wrote pretty idiotic test and
>> > run it on current fedora 20 kernel and then on linux-next.
>> >
>>
>> +Al. He reworked splice code in linux-next.
>
> Thanks Kirill. Al, it looks like iter_file_splice_write no longer honor @len while
> building kiocb vector but pushes as much as it can.


I guess this should fix your problem:
https://lkml.org/lkml/2014/5/27/353
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