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Date: Sun, 14 Sep 2014 09:24:17 -0400
Message-ID: <CAABAsM4sAecHt291APP6AZ9e5QvNCRK74WFF-tyje50CNCcY1g@mail.gmail.com>
Subject: Re: [PATCH 8/9] pnfs/blocklayout: return layouts on setattr
From: Trond Myklebust <trond.myklebust@primarydata.com>
To: Boaz Harrosh <openosd@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>, Peng Tao <bergwolf@primarydata.com>,
        Boaz Harrosh <boaz@plexistor.com>,
        Linux NFS Mailing List <linux-nfs@vger.kernel.org>
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Sender: linux-nfs-owner@vger.kernel.org

On Sun, Sep 14, 2014 at 6:55 AM, Boaz Harrosh <openosd@gmail.com> wrote:
> On 09/11/2014 07:14 PM, Trond Myklebust wrote:
> <>
>> In the files layout case, it is actually quite common for the server
>> to hand out an "infinite" sized layout in response to a LAYOUTGET. It
>> means that the client doesn't need to ask for a new layout in order to
>> append to the file.
>>
>
> You mean to say that: "The Linux files-layout driver only supports infinite
>  sized layout, so it is pointless to return a layout which will be returned
>  again, exactly the same"
>
> Because I agree that "an infinite sized layout" need not be returned but
> an none-infinite should, only we do not have any.
>

No Boaz. I mean that it is utterly pointless and stupid to return a
layout that doesn't preallocate any resources when it isn't necessary
to do so.