From patchwork Tue Nov 14 21:56:48 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Josef Bacik X-Patchwork-Id: 10058421 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 61ADA602A7 for ; Tue, 14 Nov 2017 21:57:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 532DE28609 for ; Tue, 14 Nov 2017 21:57:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4282929A74; Tue, 14 Nov 2017 21:57:12 +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=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=unavailable 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 BC8F029A60 for ; Tue, 14 Nov 2017 21:57:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757227AbdKNV5J (ORCPT ); Tue, 14 Nov 2017 16:57:09 -0500 Received: from mail-qt0-f195.google.com ([209.85.216.195]:54067 "EHLO mail-qt0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756690AbdKNV5A (ORCPT ); Tue, 14 Nov 2017 16:57:00 -0500 Received: by mail-qt0-f195.google.com with SMTP id n61so29678457qte.10 for ; Tue, 14 Nov 2017 13:57:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=toxicpanda-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=QT8LPOru+humEkkSYMtKR9TqhoID/HzPrqM+poA1U2U=; b=QrHdfqJuEtmGkeqI6pqZKC5BzwT4ESq1FzFkZegVsQ6RzmfGR1pL0JnXgHjmNrzYVm TGdM5XE0sQ3nW6JAV2eteotyMaM8sQc5LdqYs0b74sdsYCfhzTxPA6cnNfQAmxC4JAlo cGfBueO6zZbkIJZq27CfwFwRwSuiXauOrGmT6GNRHSE8phD54+Pa1apLDxu33Tym3FH7 NosWIF6AGR35AQKT/PbtkGMrLXSpbL0I9QoTm3s50b0ueRZrhsRcrcEEyMi6a+YS6Ctv 6FkVARxrcLjHb4vcUopuUzCB/FQwW6/Hd1+drzqqn8lT1zvzKQyjJX56WwfGmB5x9mLh oBFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=QT8LPOru+humEkkSYMtKR9TqhoID/HzPrqM+poA1U2U=; b=Ov6JOOUHlJuMAXwfMyFCo3LzD02c+ybK4kc5TDJVFaQa0bfC26szvy+s2fp6+7xxJi ZeI+aD2jEiYxtIET0q5XCCMMkKWji82WWGcDaAGzbVwikeczFnn7z5T1C7QuYYo9s5P9 0QsqQgBtpNZjMoK0ETGrSMsbxEK/lv5ah8MOFgOzjaVNDE65rYDZRenlZVMbitXOzSJi DZcR4+7wVpgEcMjThNg4l1SdIl+pzGqmJ7x+qH84QhcQ0bd9jyQ5AgOF44o288DOYkmR MgJZT0Pm8VhQsmWIOy6wuBmY17/4XnqB5825yBCijPnf8v7qQ/qDggf41imY3gsiYrEK /gGw== X-Gm-Message-State: AJaThX65QDZk4oYsfuHaxr1GG1WN78vwRg/LPQ9fWKzhuNAxKsAwpiyO d8idMeL8wiNaa3xSM/3LfuTi2w== X-Google-Smtp-Source: AGs4zMbbLNUA6Dr6xlFWVnka4eVlnY1qJcc+JfZahuZ28T62i/DAufLQJF0FAeAeM9qJ6+LdkYvrBw== X-Received: by 10.55.43.134 with SMTP id r6mr20160504qkr.266.1510696620109; Tue, 14 Nov 2017 13:57:00 -0800 (PST) Received: from localhost (cpe-2606-A000-4381-1201-225-22FF-FEB3-E51A.dyn6.twc.com. [2606:a000:4381:1201:225:22ff:feb3:e51a]) by smtp.gmail.com with ESMTPSA id y30sm13068898qtd.48.2017.11.14.13.56.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 14 Nov 2017 13:56:59 -0800 (PST) From: Josef Bacik To: hannes@cmpxchg.org, linux-mm@kvack.org, akpm@linux-foundation.org, jack@suse.cz, linux-fsdevel@vger.kernel.org, kernel-team@fb.com, linux-btrfs@vger.kernel.org Cc: Josef Bacik Subject: [PATCH 02/10] writeback: convert WB_WRITTEN/WB_DIRITED counters to bytes Date: Tue, 14 Nov 2017 16:56:48 -0500 Message-Id: <1510696616-8489-2-git-send-email-josef@toxicpanda.com> X-Mailer: git-send-email 2.7.5 In-Reply-To: <1510696616-8489-1-git-send-email-josef@toxicpanda.com> References: <1510696616-8489-1-git-send-email-josef@toxicpanda.com> 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: Josef Bacik These are counters that constantly go up in order to do bandwidth calculations. It isn't important what the units are in, as long as they are consistent between the two of them, so convert them to count bytes written/dirtied, and allow the metadata accounting stuff to change the counters as well. Signed-off-by: Josef Bacik Acked-by: Tejun Heo Reviewed-by: Liu Bo --- fs/fuse/file.c | 4 ++-- include/linux/backing-dev-defs.h | 4 ++-- include/linux/backing-dev.h | 2 +- mm/backing-dev.c | 9 +++++---- mm/page-writeback.c | 20 ++++++++++---------- 5 files changed, 20 insertions(+), 19 deletions(-) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index cb7dff5c45d7..67e7c4fac28d 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1471,7 +1471,7 @@ static void fuse_writepage_finish(struct fuse_conn *fc, struct fuse_req *req) for (i = 0; i < req->num_pages; i++) { dec_wb_stat(&bdi->wb, WB_WRITEBACK); dec_node_page_state(req->pages[i], NR_WRITEBACK_TEMP); - wb_writeout_inc(&bdi->wb); + wb_writeout_add(&bdi->wb, PAGE_SIZE); } wake_up(&fi->page_waitq); } @@ -1776,7 +1776,7 @@ static bool fuse_writepage_in_flight(struct fuse_req *new_req, dec_wb_stat(&bdi->wb, WB_WRITEBACK); dec_node_page_state(page, NR_WRITEBACK_TEMP); - wb_writeout_inc(&bdi->wb); + wb_writeout_add(&bdi->wb, PAGE_SIZE); fuse_writepage_free(fc, new_req); fuse_request_free(new_req); goto out; diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h index 866c433e7d32..ded45ac2cec7 100644 --- a/include/linux/backing-dev-defs.h +++ b/include/linux/backing-dev-defs.h @@ -36,8 +36,8 @@ typedef int (congested_fn)(void *, int); enum wb_stat_item { WB_RECLAIMABLE, WB_WRITEBACK, - WB_DIRTIED, - WB_WRITTEN, + WB_DIRTIED_BYTES, + WB_WRITTEN_BYTES, NR_WB_STAT_ITEMS }; diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 14e266d12620..39b8dc486ea7 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -89,7 +89,7 @@ static inline s64 wb_stat_sum(struct bdi_writeback *wb, enum wb_stat_item item) return percpu_counter_sum_positive(&wb->stat[item]); } -extern void wb_writeout_inc(struct bdi_writeback *wb); +extern void wb_writeout_add(struct bdi_writeback *wb, long bytes); /* * maximal error of a stat counter. diff --git a/mm/backing-dev.c b/mm/backing-dev.c index e19606bb41a0..62a332a91b38 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -68,14 +68,15 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v) wb_thresh = wb_calc_thresh(wb, dirty_thresh); #define K(x) ((x) << (PAGE_SHIFT - 10)) +#define BtoK(x) ((x) >> 10) seq_printf(m, "BdiWriteback: %10lu kB\n" "BdiReclaimable: %10lu kB\n" "BdiDirtyThresh: %10lu kB\n" "DirtyThresh: %10lu kB\n" "BackgroundThresh: %10lu kB\n" - "BdiDirtied: %10lu kB\n" - "BdiWritten: %10lu kB\n" + "BdiDirtiedBytes: %10lu kB\n" + "BdiWrittenBytes: %10lu kB\n" "BdiWriteBandwidth: %10lu kBps\n" "b_dirty: %10lu\n" "b_io: %10lu\n" @@ -88,8 +89,8 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v) K(wb_thresh), K(dirty_thresh), K(background_thresh), - (unsigned long) K(wb_stat(wb, WB_DIRTIED)), - (unsigned long) K(wb_stat(wb, WB_WRITTEN)), + (unsigned long) BtoK(wb_stat(wb, WB_DIRTIED_BYTES)), + (unsigned long) BtoK(wb_stat(wb, WB_WRITTEN_BYTES)), (unsigned long) K(wb->write_bandwidth), nr_dirty, nr_io, diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 1a47d4296750..e4563645749a 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -597,11 +597,11 @@ static void wb_domain_writeout_inc(struct wb_domain *dom, * Increment @wb's writeout completion count and the global writeout * completion count. Called from test_clear_page_writeback(). */ -static inline void __wb_writeout_inc(struct bdi_writeback *wb) +static inline void __wb_writeout_add(struct bdi_writeback *wb, long bytes) { struct wb_domain *cgdom; - inc_wb_stat(wb, WB_WRITTEN); + __add_wb_stat(wb, WB_WRITTEN_BYTES, bytes); wb_domain_writeout_inc(&global_wb_domain, &wb->completions, wb->bdi->max_prop_frac); @@ -611,15 +611,15 @@ static inline void __wb_writeout_inc(struct bdi_writeback *wb) wb->bdi->max_prop_frac); } -void wb_writeout_inc(struct bdi_writeback *wb) +void wb_writeout_add(struct bdi_writeback *wb, long bytes) { unsigned long flags; local_irq_save(flags); - __wb_writeout_inc(wb); + __wb_writeout_add(wb, bytes); local_irq_restore(flags); } -EXPORT_SYMBOL_GPL(wb_writeout_inc); +EXPORT_SYMBOL_GPL(wb_writeout_add); /* * On idle system, we can be called long after we scheduled because we use @@ -1362,8 +1362,8 @@ static void __wb_update_bandwidth(struct dirty_throttle_control *gdtc, if (elapsed < BANDWIDTH_INTERVAL) return; - dirtied = percpu_counter_read(&wb->stat[WB_DIRTIED]); - written = percpu_counter_read(&wb->stat[WB_WRITTEN]); + dirtied = percpu_counter_read(&wb->stat[WB_DIRTIED_BYTES]) >> PAGE_SHIFT; + written = percpu_counter_read(&wb->stat[WB_WRITTEN_BYTES]) >> PAGE_SHIFT; /* * Skip quiet periods when disk bandwidth is under-utilized. @@ -2435,7 +2435,7 @@ void account_page_dirtied(struct page *page, struct address_space *mapping) __inc_zone_page_state(page, NR_ZONE_WRITE_PENDING); __inc_node_page_state(page, NR_DIRTIED); inc_wb_stat(wb, WB_RECLAIMABLE); - inc_wb_stat(wb, WB_DIRTIED); + __add_wb_stat(wb, WB_DIRTIED_BYTES, PAGE_SIZE); task_io_account_write(PAGE_SIZE); current->nr_dirtied++; this_cpu_inc(bdp_ratelimits); @@ -2522,7 +2522,7 @@ void account_page_redirty(struct page *page) wb = unlocked_inode_to_wb_begin(inode, &locked); current->nr_dirtied--; dec_node_page_state(page, NR_DIRTIED); - dec_wb_stat(wb, WB_DIRTIED); + __add_wb_stat(wb, WB_DIRTIED_BYTES, -(long)PAGE_SIZE); unlocked_inode_to_wb_end(inode, locked); } } @@ -2744,7 +2744,7 @@ int test_clear_page_writeback(struct page *page) struct bdi_writeback *wb = inode_to_wb(inode); dec_wb_stat(wb, WB_WRITEBACK); - __wb_writeout_inc(wb); + __wb_writeout_add(wb, PAGE_SIZE); } }