Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751730Ab3JWHkk (ORCPT ); Wed, 23 Oct 2013 03:40:40 -0400 Received: from forward3h.mail.yandex.net ([84.201.187.148]:55804 "EHLO forward3h.mail.yandex.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751656Ab3JWHki (ORCPT ); Wed, 23 Oct 2013 03:40:38 -0400 From: Konstantin Tokarev To: Brent Taylor Cc: "linux-mtd@lists.infradead.org" , Artem Bityutskiy , "linux-kernel@vger.kernel.org" , "akpm@linux-foundation.org" In-Reply-To: References: <55541379679397@web20h.yandex.ru> <183031382371160@web6m.yandex.ru> <139841382436609@web24g.yandex.ru> Subject: Re: lz4hc compression in UBIFS? MIME-Version: 1.0 Message-Id: <300471382514034@web11h.yandex.ru> X-Mailer: Yamail [ http://yandex.ru ] 5.0 Date: Wed, 23 Oct 2013 11:40:34 +0400 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=koi8-r Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1044 Lines: 26 23.10.2013, 09:26, "Brent Taylor" : > Konstantin, > ???I did my testing with data from /dev/urandom (which I now realize > wasn't the best choice of data source), but if I use /dev/zero (which > actually causes data compression to occur), the decompressor fails. ?I > don't know the internal workings of the lz4hc compressor or the lz4 > decompressor. ?I couldn't find any examples of any code in the kernel > actually using the compressor. ?I've cc'ed the maintainers of the > lz4hc_compress.c to see if they my have some more insight to the > issue. Does decompressor fail for you with the same error messages? Have you tried to copy my file to the volume? It looks like minimal test case for my board, if I remove any line decompressor works fine. -- Regards, Konstantin -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/