linux-kernel - RE: exfat filesystem

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Message-ID: <SN6PR2101MB10726033399AEA1D0BD22067A0F10@SN6PR2101MB1072.namprd21.prod.outlook.com>
Date:   Tue, 9 Jul 2019 16:39:31 +0000
From:   KY Srinivasan <kys@...rosoft.com>
To:     Matthew Wilcox <willy@...radead.org>,
        Theodore Ts'o <tytso@....edu>,
        Valdis Klētnieks <valdis.kletnieks@...edu>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>
CC:     Sasha Levin <sashal@...nel.org>
Subject: RE: exfat filesystem



-----Original Message-----
From: Matthew Wilcox <willy@...radead.org> 
Sent: Tuesday, July 9, 2019 8:49 AM
To: Theodore Ts'o <tytso@....edu>; Valdis Klētnieks <valdis.kletnieks@...edu>; Alexander Viro <viro@...iv.linux.org.uk>; Greg Kroah-Hartman <gregkh@...uxfoundation.org>; linux-fsdevel@...r.kernel.org; linux-kernel@...r.kernel.org; devel@...verdev.osuosl.org; KY Srinivasan <kys@...rosoft.com>
Cc: Sasha Levin <sashal@...nel.org>
Subject: exfat filesystem

On Tue, Jul 09, 2019 at 11:30:39AM -0400, Theodore Ts'o wrote:
> On Tue, Jul 09, 2019 at 04:21:36AM -0700, Matthew Wilcox wrote:
> > How does
> > https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww
> > w.zdnet.com%2Farticle%2Fmicrosoft-open-sources-its-entire-patent-por
> > tfolio%2F&amp;data=02%7C01%7Ckys%40microsoft.com%7Cd73183ff28c94bbbf
> > 6dd08d70484f009%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C6369828
> > 41322780798&amp;sdata=TCSgqe0h4FYaA5BBGVJl98WFBqbEHSo8B0FhlfTYVVA%3D
> > &amp;reserved=0
> > change your personal opinion?
> 
> According to SFC's legal analysis, Microsoft joining the OIN doesn't 
> mean that the eXFAT patents are covered, unless *Microsoft* 
> contributes the code to the Linux usptream kernel.  That's because the 
> OIN is governed by the Linux System Definition, and until MS 
> contributes code which covered by the exFAT patents, it doesn't count.
> 
> For more details:
> 
> https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsfco
> nservancy.org%2Fblog%2F2018%2Foct%2F10%2Fmicrosoft-oin-exfat%2F&amp;da
> ta=02%7C01%7Ckys%40microsoft.com%7Cd73183ff28c94bbbf6dd08d70484f009%7C
> 72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636982841322780798&amp;sdat
> a=y%2BhZFhjIXUrFVn5%2FN%2BRVxRQWzYs2QI5V1jM8SDPN2dg%3D&amp;reserved=0
> 
> (This is not legal advice, and I am not a lawyer.)

>Interesting analysis.  It seems to me that the correct forms would be observed if someone suitably senior at Microsoft accepted the work from >Valdis and submitted it with their sign-off.  KY, how about it?

Matthew,

Let me dig up the details here.

K. Y