From patchwork Sun Jun 5 19:32:03 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Christie X-Patchwork-Id: 9155701 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id DE3BD60759 for ; Sun, 5 Jun 2016 19:34:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CEC2E2824A for ; Sun, 5 Jun 2016 19:34:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C3753282EE; Sun, 5 Jun 2016 19:34:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 46C7B2821D for ; Sun, 5 Jun 2016 19:34:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752775AbcFETdw (ORCPT ); Sun, 5 Jun 2016 15:33:52 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53541 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752431AbcFETd0 (ORCPT ); Sun, 5 Jun 2016 15:33:26 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 58444C003586; Sun, 5 Jun 2016 19:33:25 +0000 (UTC) Received: from rh2.redhat.com (vpn-57-172.rdu2.redhat.com [10.10.57.172]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u55JWR9U003130; Sun, 5 Jun 2016 15:33:23 -0400 From: mchristi@redhat.com To: linux-f2fs-devel@lists.sourceforge.net, linux-ext4@vger.kernel.org, konrad.wilk@oracle.com, drbd-dev@lists.linbit.com, philipp.reisner@linbit.com, lars.ellenberg@linbit.com, linux-raid@vger.kernel.org, dm-devel@redhat.com, linux-fsdevel@vger.kernel.org, linux-bcache@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-mtd@lists.infradead.org, target-devel@vger.kernel.org, linux-btrfs@vger.kernel.org, osd-dev@open-osd.org, xfs@oss.sgi.com, ocfs2-devel@oss.oracle.com Cc: Mike Christie Subject: [PATCH 23/45] dm: pass dm stats data dir instead of bi_rw Date: Sun, 5 Jun 2016 14:32:03 -0500 Message-Id: <1465155145-10812-24-git-send-email-mchristi@redhat.com> In-Reply-To: <1465155145-10812-1-git-send-email-mchristi@redhat.com> References: <1465155145-10812-1-git-send-email-mchristi@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Sun, 05 Jun 2016 19:33:25 +0000 (UTC) Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Mike Christie It looks like dm stats cares about the data direction (READ vs WRITE) and does not need the bio/request flags. Commands like REQ_FLUSH, REQ_DISCARD and REQ_WRITE_SAME are currently always set with REQ_WRITE, so the extra check for REQ_DISCARD in dm_stats_account_io is not needed. This patch has it use the bio and request data_dir helpers instead of accessing the bi_rw/cmd_flags directly. This makes the next patches that remove the operation from the cmd_flags and bi_rw easier, because we will no longer have the REQ_WRITE bit set for operations like discards. Signed-off-by: Mike Christie Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke --- v2: 1. Merged Mike Snitzer's fixes to pass in int instead of unsigned long. 2. Fix 80 char col issues. drivers/md/dm-stats.c | 9 ++++----- drivers/md/dm.c | 21 ++++++++++++--------- 2 files changed, 16 insertions(+), 14 deletions(-) diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c index 8289804..4fba26c 100644 --- a/drivers/md/dm-stats.c +++ b/drivers/md/dm-stats.c @@ -514,11 +514,10 @@ static void dm_stat_round(struct dm_stat *s, struct dm_stat_shared *shared, } static void dm_stat_for_entry(struct dm_stat *s, size_t entry, - unsigned long bi_rw, sector_t len, + int idx, sector_t len, struct dm_stats_aux *stats_aux, bool end, unsigned long duration_jiffies) { - unsigned long idx = bi_rw & REQ_WRITE; struct dm_stat_shared *shared = &s->stat_shared[entry]; struct dm_stat_percpu *p; @@ -584,7 +583,7 @@ static void dm_stat_for_entry(struct dm_stat *s, size_t entry, #endif } -static void __dm_stat_bio(struct dm_stat *s, unsigned long bi_rw, +static void __dm_stat_bio(struct dm_stat *s, int bi_rw, sector_t bi_sector, sector_t end_sector, bool end, unsigned long duration_jiffies, struct dm_stats_aux *stats_aux) @@ -645,8 +644,8 @@ void dm_stats_account_io(struct dm_stats *stats, unsigned long bi_rw, last = raw_cpu_ptr(stats->last); stats_aux->merged = (bi_sector == (ACCESS_ONCE(last->last_sector) && - ((bi_rw & (REQ_WRITE | REQ_DISCARD)) == - (ACCESS_ONCE(last->last_rw) & (REQ_WRITE | REQ_DISCARD))) + ((bi_rw == WRITE) == + (ACCESS_ONCE(last->last_rw) == WRITE)) )); ACCESS_ONCE(last->last_sector) = end_sector; ACCESS_ONCE(last->last_rw) = bi_rw; diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 1b2f962..f5ac0a3 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -723,8 +723,9 @@ static void start_io_acct(struct dm_io *io) atomic_inc_return(&md->pending[rw])); if (unlikely(dm_stats_used(&md->stats))) - dm_stats_account_io(&md->stats, bio->bi_rw, bio->bi_iter.bi_sector, - bio_sectors(bio), false, 0, &io->stats_aux); + dm_stats_account_io(&md->stats, bio_data_dir(bio), + bio->bi_iter.bi_sector, bio_sectors(bio), + false, 0, &io->stats_aux); } static void end_io_acct(struct dm_io *io) @@ -738,8 +739,9 @@ static void end_io_acct(struct dm_io *io) generic_end_io_acct(rw, &dm_disk(md)->part0, io->start_time); if (unlikely(dm_stats_used(&md->stats))) - dm_stats_account_io(&md->stats, bio->bi_rw, bio->bi_iter.bi_sector, - bio_sectors(bio), true, duration, &io->stats_aux); + dm_stats_account_io(&md->stats, bio_data_dir(bio), + bio->bi_iter.bi_sector, bio_sectors(bio), + true, duration, &io->stats_aux); /* * After this is decremented the bio must not be touched if it is @@ -1121,9 +1123,9 @@ static void rq_end_stats(struct mapped_device *md, struct request *orig) if (unlikely(dm_stats_used(&md->stats))) { struct dm_rq_target_io *tio = tio_from_request(orig); tio->duration_jiffies = jiffies - tio->duration_jiffies; - dm_stats_account_io(&md->stats, orig->cmd_flags, blk_rq_pos(orig), - tio->n_sectors, true, tio->duration_jiffies, - &tio->stats_aux); + dm_stats_account_io(&md->stats, rq_data_dir(orig), + blk_rq_pos(orig), tio->n_sectors, true, + tio->duration_jiffies, &tio->stats_aux); } } @@ -2082,8 +2084,9 @@ static void dm_start_request(struct mapped_device *md, struct request *orig) struct dm_rq_target_io *tio = tio_from_request(orig); tio->duration_jiffies = jiffies; tio->n_sectors = blk_rq_sectors(orig); - dm_stats_account_io(&md->stats, orig->cmd_flags, blk_rq_pos(orig), - tio->n_sectors, false, 0, &tio->stats_aux); + dm_stats_account_io(&md->stats, rq_data_dir(orig), + blk_rq_pos(orig), tio->n_sectors, false, 0, + &tio->stats_aux); } /*