From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752644AbaBMRqw (ORCPT ); Thu, 13 Feb 2014 12:46:52 -0500 Received: from mail-ea0-f171.google.com ([209.85.215.171]:64373 "EHLO mail-ea0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752477AbaBMRqt (ORCPT ); Thu, 13 Feb 2014 12:46:49 -0500 From: Sergey Senozhatsky To: Minchan Kim Cc: Jerome Marchand , Nitin Gupta , linux-kernel@vger.kernel.org, Sergey Senozhatsky Subject: [PATCHv5 0/4] add compressing abstraction and multi stream support Date: Thu, 13 Feb 2014 20:43:18 +0300 Message-Id: <1392313402-5728-1-git-send-email-sergey.senozhatsky@gmail.com> X-Mailer: git-send-email 1.9.0.rc3.260.g4cf525c Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patchset introduces zcomp compression backend abstraction adding ability to support compression algorithms other than LZO; support for multi compression streams, making parallel compressions possible. Diff from v4 (reviewed by Minchan Kim): -- renamed zcomp buffer_lock; removed src len and dst len from compress() and decompress(); not using term `buffer' and `workmem' in code and documentation; define compress() and decompress() functions for LZO backend; not using goto's; do not put idle zcomp_strm to idle list tail. Diff from v3: -- renamed compression backend and working memory structs as requested by Minchan Kim; fixed several issues noted by Minchan Kim. Sergey Senozhatsky (4): zram: introduce compressing backend abstraction zram: use zcomp compressing backends zram: zcomp support multi compressing streams zram: document max_comp_streams Documentation/ABI/testing/sysfs-block-zram | 9 +- Documentation/blockdev/zram.txt | 20 +++- drivers/block/zram/Makefile | 2 +- drivers/block/zram/zcomp.c | 155 +++++++++++++++++++++++++++++ drivers/block/zram/zcomp.h | 56 +++++++++++ drivers/block/zram/zcomp_lzo.c | 48 +++++++++ drivers/block/zram/zram_drv.c | 102 ++++++++++++------- drivers/block/zram/zram_drv.h | 10 +- 8 files changed, 355 insertions(+), 47 deletions(-) create mode 100644 drivers/block/zram/zcomp.c create mode 100644 drivers/block/zram/zcomp.h create mode 100644 drivers/block/zram/zcomp_lzo.c -- 1.9.0.rc3.260.g4cf525c