RE: exfat filesystem

From: KY Srinivasan
Date: Tue Jul 09 2019 - 12:40:15 EST




-----Original Message-----
From: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Sent: Tuesday, July 9, 2019 8:49 AM
To: Theodore Ts'o <tytso@xxxxxxx>; Valdis Klētnieks <valdis.kletnieks@xxxxxx>; Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>; Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>; linux-fsdevel@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; devel@xxxxxxxxxxxxxxxxxxxx; KY Srinivasan <kys@xxxxxxxxxxxxx>
Cc: Sasha Levin <sashal@xxxxxxxxxx>
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