From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-f48.google.com (mail-lf0-f48.google.com [209.85.215.48]) by kanga.kvack.org (Postfix) with ESMTP id 9AC786B0005 for ; Tue, 5 Apr 2016 10:07:50 -0400 (EDT) Received: by mail-lf0-f48.google.com with SMTP id j11so11238897lfb.1 for ; Tue, 05 Apr 2016 07:07:50 -0700 (PDT) Received: from mail-lb0-x229.google.com (mail-lb0-x229.google.com. [2a00:1450:4010:c04::229]) by mx.google.com with ESMTPS id j3si19363660lbc.107.2016.04.05.07.07.48 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 05 Apr 2016 07:07:49 -0700 (PDT) Received: by mail-lb0-x229.google.com with SMTP id vo2so10098897lbb.1 for ; Tue, 05 Apr 2016 07:07:48 -0700 (PDT) MIME-Version: 1.0 Date: Tue, 5 Apr 2016 15:07:48 +0100 Message-ID: Subject: [BUG] lib: zram lz4 compression/decompression still broken on big endian From: Rui Salvaterra Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: linux-kernel@vger.kernel.org Cc: eunb.song@samsung.com, gregkh@linuxfoundation.org, minchan@kernel.org, linux-mm@kvack.org Hi, I apologise in advance if I've cc'ed too many/the wrong people/lists. Whenever I try to use zram with lz4, on my Power Mac G5 (tested with kernel 4.4.0-16-powerpc64-smp from Ubuntu 16.04 LTS), I get the following on my dmesg: [13150.675820] zram: Added device: zram0 [13150.704133] zram0: detected capacity change from 0 to 5131976704 [13150.715960] zram: Decompression failed! err=-1, page=0 [13150.716008] zram: Decompression failed! err=-1, page=0 [13150.716027] zram: Decompression failed! err=-1, page=0 [13150.716032] Buffer I/O error on dev zram0, logical block 0, async page read I believe Eunbong Song wrote a patch [1] to fix this (or a very identical) bug on MIPS, but it never got merged (maybe incorrect/incomplete?). Is there any hope of seeing this bug fixed? Thanks, Rui Salvaterra [1] http://comments.gmane.org/gmane.linux.kernel/1752745 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org