Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753559Ab3IXANb (ORCPT ); Mon, 23 Sep 2013 20:13:31 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43236 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752662Ab3IXANa (ORCPT ); Mon, 23 Sep 2013 20:13:30 -0400 Date: Mon, 23 Sep 2013 20:13:20 -0400 From: Mike Snitzer To: Linus Torvalds Cc: dm-devel@redhat.com, linux-kernel@vger.kernel.org, Joe Thornber , "Alasdair G. Kergon" , Frank Mayhar , Hannes Reinecke , "Jun'ichi Nomura" , "Martin K. Petersen" , Mikulas Patocka Subject: [git pull] device mapper fixes for 3.12 Message-ID: <20130924001320.GA27767@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2718 Lines: 64 The following changes since commit 272b98c6455f00884f0350f775c5342358ebb73f: Linux 3.12-rc1 (2013-09-16 16:17:51 -0400) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git tags/dm-3.12-fixes for you to fetch changes up to e8603136cb04ec2d0c9b4b5be7a071fc003cb399: dm: add reserved_bio_based_ios module parameter (2013-09-23 10:42:24 -0400) Please pull, thanks. Mike ---------------------------------------------------------------- A set of device-mapper fixes for 3.12. A few fixes for dm-snapshot, a 32 bit fix for dm-stats, a couple error handling fixes for dm-multipath. A fix for the thin provisioning target to not expose non-zero discard limits if discards are disabled. Lastly, add two DM module parameters which allow users to tune the emergency memory reserves that DM mainatins per device -- this helps fix a long-standing issue for dm-multipath. The conservative default reserve for request-based dm-multipath devices (256) has proven problematic for users with many multipathed SCSI devices but relatively little memory. To responsibly select a smaller value users should use the new nr_bios tracepoint info (via commit 75afb352 "block: Add nr_bios to block_rq_remap tracepoint") to determine the peak number of bios their workloads create. ---------------------------------------------------------------- Jun'ichi Nomura (1): dm mpath: do not fail path on -ENOSPC Mike Snitzer (5): dm mpath: disable WRITE SAME if it fails dm thin: do not expose non-zero discard limits if discards disabled dm: lower bio-based mempool reservation dm: add reserved_rq_based_ios module parameter dm: add reserved_bio_based_ios module parameter Mikulas Patocka (3): dm stats: fix possible counter corruption on 32-bit systems dm snapshot: workaround for a false positive lockdep warning dm-snapshot: fix performance degradation due to small hash size drivers/md/dm-io.c | 7 ++-- drivers/md/dm-mpath.c | 18 ++++++++--- drivers/md/dm-snap-persistent.c | 2 +- drivers/md/dm-snap.c | 5 ++- drivers/md/dm-stats.c | 23 +++++++++---- drivers/md/dm-thin.c | 14 ++++++-- drivers/md/dm.c | 71 ++++++++++++++++++++++++++++++++++++++--- drivers/md/dm.h | 3 ++ include/linux/device-mapper.h | 3 +- 9 files changed, 120 insertions(+), 26 deletions(-) -- 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/