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Date:   Thu, 17 Jan 2019 13:22:44 +1100
From:   Dave Chinner <david@...morbit.com>
To:     Jiri Kosina <jikos@...nel.org>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Matthew Wilcox <willy@...radead.org>,
        Jann Horn <jannh@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Michal Hocko <mhocko@...e.com>, Linux-MM <linux-mm@...ck.org>,
        kernel list <linux-kernel@...r.kernel.org>,
        Linux API <linux-api@...r.kernel.org>
Subject: Re: [PATCH] mm/mincore: allow for making sys_mincore() privileged

On Fri, Jan 11, 2019 at 08:36:55AM +0100, Jiri Kosina wrote:
> On Thu, 10 Jan 2019, Dave Chinner wrote:
> 
> > Sounds nice from a theoretical POV, but reality has taught us very 
> > different lessons.
> > 
> > FWIW, a quick check of XFS's history so you understand how long this 
> > behaviour has been around. It was introduced in the linux port in 2001 
> > as direct IO support was being added:
> > 
> > commit e837eac23662afae603aaaef7c94bc839c1b8f67
> > Author: Steve Lord <lord@....com>
> > Date:   Mon Mar 5 16:47:52 2001 +0000
> > 
> >     Add bounds checking for direct I/O, do the cache invalidation for
> >     data coherency on direct I/O.
> 
> Out of curiosity, which repository is this from please? Even google 
> doesn't seem to know about this SHA.

because oss.sgi.com is no longer with us, it's fallen out of all the
search engines.  It was from the "archive/xfs-import.git" tree on
oss.sgi.com:

https://web.archive.org/web/20120326044237/http://oss.sgi.com:80/cgi-bin/gitweb.cgi

but archive.org doesn't have a copy of the git tree. It contained
the XFS history right back to the first Irix commit in 1993. Some of
us still have copies of it sitting around....

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com

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