linux-kernel - Re: [PATCH 0/5] vt: get rid of worst cases of __put_user/__get

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Message-ID: <20170603154252.GA5123@kroah.com>
Date:   Sun, 4 Jun 2017 00:42:52 +0900
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Adam Borowski <kilobyte@...band.pl>
Cc:     Jiri Slaby <jslaby@...e.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] vt: get rid of worst cases of __put_user/__get_user

On Sat, Jun 03, 2017 at 09:32:55AM +0200, Adam Borowski wrote:
> Hi!
> In a recent discussion, Linus and Al Viro said quite a bit of expletives
> about __put_user() and __get_user(), that it's a bad interface that's
> almost always the wrong thing to use:
> https://marc.info/?l=linux-kernel&m=149463725626316&w=2
> https://marc.info/?l=linux-kernel&m=149465866929092&w=2
> 
> Here's a few patches applying the lessons from that discussion to vt.
> None of the uses is performance-critical, but at least we get a nice bit
> of code simplification.  And, it's a start of manual review + conversion
> that Al Viro wants.

Ah, nice work, at first glance these all look good to me.  I'll queue
them up on Monday.

greg k-h