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Date: Thu, 10 May 2007 09:53:44 +0100 From: Richard Purdie <richard@...nedhand.com> To: David Woodhouse <dwmw2@...radead.org>, Andrew Morton <akpm@...ux-foundation.org> Cc: LKML <linux-kernel@...r.kernel.org>, torvalds@...ux-foundation.org Subject: Re: [PATCH] Add LZO1X compression support to the kernel On Thu, 2007-05-10 at 09:26 +0100, David Woodhouse wrote: > On Wed, 2007-05-09 at 23:21 -0700, Andrew Morton wrote: > > Well that's attractive-looking code. > > It's compression code. I've never seen compression code look nice :) > > > Why is this needed? What code plans to use it? > > I'm itching to use it in JFFS2. Richard claims a 10% boot time speedup > and 40% improvement on file read speed, with only a slight drop in the > file compression ratio (when compared to zlib). Right, the speed improvement is noticeable and useful. JFFS2 is the primary use case, I've also implemented a crypto interface for it. > > How many buffer overruns are there in it? > > That I'm afraid I cannot tell you. There is a "safe" decompression function which does bounds checking so its at least been thought about by the author. The code has been around in userspace for a while so hopefully any issues have been ironed out before now. Richard - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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