linux-kernel - Re: [PATCH v2] userns: improve uid/gid map collision detection

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Date:	Mon, 28 Jan 2013 09:25:50 -0500
From:	Aristeu Rozanski <aris@...hat.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, "Serge E. Hallyn" <serge@...lyn.com>
Subject: Re: [PATCH v2] userns: improve uid/gid map collision detection

On Fri, Jan 25, 2013 at 06:31:37PM -0800, Eric W. Biederman wrote:
> Aritsteu after looking at both my version and yours I am going with

one extra t.

> mine.  While my code is a little wordier I have half the number of
> comparisons your code does, and I took the time to kill the variable
> introducing a function to test for range collisions makes unnecessary.
> On Andrews size metric my version seems noticably smaller as well.
> 
>  size $PWD-build/kernel/user_namespace.o
>    text	   data	    bss	    dec	    hex	filename
>    4376	    144	      0	   4520	   11a8	/home/eric/projects/linux/linux-userns-devel-build/kernel/user_namespace.o
> 
> 
> Short of something unexpected I plan to push all my code to linux-next
> sometime tomorrow.

sure, no problem
Thanks Eric

-- 
Aristeu

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