From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751299AbdAVLFV (ORCPT ); Sun, 22 Jan 2017 06:05:21 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:50498 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750985AbdAVLFU (ORCPT ); Sun, 22 Jan 2017 06:05:20 -0500 Date: Sun, 22 Jan 2017 12:05:29 +0100 From: Greg KH To: Sven Schmidt <4sschmid@informatik.uni-hamburg.de> Cc: akpm@linux-foundation.org, bongkyu.kim@lge.com, rsalvaterra@gmail.com, sergey.senozhatsky@gmail.com, linux-kernel@vger.kernel.org, herbert@gondor.apana.org.au, davem@davemloft.net, linux-crypto@vger.kernel.org, anton@enomsg.org, ccross@android.com, keescook@chromium.org, tony.luck@intel.com, phillip@squashfs.org.uk Subject: Re: [PATCH 1/4] lib: Update LZ4 compressor module Message-ID: <20170122110529.GB17972@kroah.com> References: <1482259992-16680-1-git-send-email-4sschmid@informatik.uni-hamburg.de> <1485011351-7463-1-git-send-email-4sschmid@informatik.uni-hamburg.de> <1485011351-7463-2-git-send-email-4sschmid@informatik.uni-hamburg.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1485011351-7463-2-git-send-email-4sschmid@informatik.uni-hamburg.de> User-Agent: Mutt/1.7.2 (2016-11-26) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jan 21, 2017 at 04:09:08PM +0100, Sven Schmidt wrote: > This patch updates LZ4 kernel module to LZ4 v1.7.3 by Yann Collet. > The kernel module is inspired by the previous work by Chanho Min. > The updated LZ4 module will not break existing code since there were alias > methods added to ensure backwards compatibility. > > API changes: > > New method LZ4_compress_fast which differs from the variant available > in kernel by the new acceleration parameter, > allowing to trade compression ratio for more compression speed > and vice versa. > > LZ4_decompress_fast is the respective decompression method, featuring a very > fast decoder (multiple GB/s per core), able to reach RAM speed in multi-core > systems. The decompressor allows to decompress data compressed with > LZ4 fast as well as the LZ4 HC (high compression) algorithm. > > Also the useful functions LZ4_decompress_safe_partial > LZ4_compress_destsize were added. The latter reverses the logic by trying to > compress as much data as possible from source to dest while the former aims > to decompress partial blocks of data. > > A bunch of streaming functions were also added > which allow compressig/decompressing data in multiple steps > (so called "streaming mode"). > > The methods lz4_compress and lz4_decompress_unknownoutputsize > are now known as LZ4_compress_default respectivley LZ4_decompress_safe. > The old methods are still available for providing backwards compatibility. > > Signed-off-by: Sven Schmidt <4sschmid@informatik.uni-hamburg.de> Please fix up so that it doesn't break the build as reported by the kbuild tool... thanks, greg k-h