linux-kernel - Re: [PATCH v1] : Switch to use new generic UUID API

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Date:   Thu, 24 Jan 2019 17:41:18 +0100
From:   Javier González <javier@...igon.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Christoph Hellwig <hch@....de>,
        Matias Bjørling <mb@...htnvm.io>,
        linux-block@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1] : Switch to use new generic UUID API


> On 24 Jan 2019, at 17.38, Andy Shevchenko <andy.shevchenko@...il.com> wrote:
> 
> On Thu, Jan 24, 2019 at 4:36 PM Javier González <javier@...igon.com> wrote:
> 
>> It is not pushed anywhere yet, but I have been working on a tool to make
>> a pblk recovery tool to enable FTL repairs if something fails in the
>> kernel recovery path. Here, I use this uuid to identify the
>> instance - is there a way to reconcile guid_t with user space, which
>> currently uses the __u8?
> 
> For Linux there is util-linux which contains libuuid. There is uuid_t type.
> Unfortunately there is no so called LE (little endian) variant.
> Perhaps someone would need to extend the support for that.

Ok. I can look into that when releasing pblk-tools. But for now, I am OK
with applying with the changes Christoph suggested and aligning with
guid_t if you also think helps maintaining common helpers.

Javier

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