Messages in this thread | | | Subject | Re: [PATCH] Add LZO1X compression support to the kernel | From | Richard Purdie <> | Date | Thu, 10 May 2007 09:53:44 +0100 |
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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
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