linux-kernel - Re: Possible stable fix for decompressor speed

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Message-ID: <20140128162806.GB6972@kroah.com>
Date:	Tue, 28 Jan 2014 08:28:06 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Mark Brown <broonie@...nel.org>
Cc:	Jon Medhurst <tixy@...aro.org>,
	Alexandre Courbot <acourbot@...dia.com>,
	stable@...r.kernel.org, linaro-kernel@...ts.linaro.org,
	linux-kernel@...r.kernel.org
Subject: Re: Possible stable fix for decompressor speed

On Tue, Jan 28, 2014 at 04:14:28PM +0000, Mark Brown wrote:
> The changes in patch 1431574a1c4c (lib/decompressors: fix "no limit"
> output buffer length) avoid doing decompression a byte at a time when
> decompressing into high physical addresses using a small, well isolated
> change.  The patch can give a very noticable improvement in kernel boot
> times on affected systems, for example with one ARM system this reduces
> the total time to boot the kernel by more than a third.
> 
> Would you consider this patch for stable?  It doesn't quite fit within
> the criteria but you've indicated in the past that such isolated and
> well supported changs can be acceptable anyway.  If it's not OK for
> stable it seems like it should be a good candidate for LTSI.

It's a one-line change that seems well tested and provides a noticed
speedup, so yes, I can take it for the 3.10-stable tree, thanks.

greg k-h
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