From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757442Ab1CCIVF (ORCPT ); Thu, 3 Mar 2011 03:21:05 -0500 Received: from mga01.intel.com ([192.55.52.88]:61716 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755969Ab1CCIVB (ORCPT ); Thu, 3 Mar 2011 03:21:01 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.62,257,1297065600"; d="scan'208";a="663359357" Message-Id: <20110303074950.306247535@intel.com> User-Agent: quilt/0.48-1 Date: Thu, 03 Mar 2011 14:45:18 +0800 From: Wu Fengguang To: Andrew Morton CC: Jan Kara , Michael Rubin , Wu Fengguang CC: Christoph Hellwig CC: Trond Myklebust CC: Dave Chinner CC: "Theodore Ts'o" CC: Chris Mason CC: Peter Zijlstra CC: Mel Gorman CC: Rik van Riel CC: KOSAKI Motohiro CC: Greg Thelen CC: Minchan Kim CC: Vivek Goyal CC: Andrea Righi CC: Balbir Singh Cc: linux-mm Cc: Cc: LKML Subject: [PATCH 13/27] writeback: account per-bdi accumulated written pages References: <20110303064505.718671603@intel.com> Content-Disposition: inline; filename=writeback-bdi-written.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jan Kara Introduce the BDI_WRITTEN counter. It will be used for estimating the bdi's write bandwidth. Peter Zijlstra : Move BDI_WRITTEN accounting into __bdi_writeout_inc(). This will cover and fix fuse, which only calls bdi_writeout_inc(). CC: Michael Rubin Reviewed-by: KOSAKI Motohiro Signed-off-by: Jan Kara Signed-off-by: Wu Fengguang --- include/linux/backing-dev.h | 1 + mm/backing-dev.c | 6 ++++-- mm/page-writeback.c | 1 + 3 files changed, 6 insertions(+), 2 deletions(-) --- linux-next.orig/include/linux/backing-dev.h 2011-03-03 14:03:37.000000000 +0800 +++ linux-next/include/linux/backing-dev.h 2011-03-03 14:04:06.000000000 +0800 @@ -40,6 +40,7 @@ typedef int (congested_fn)(void *, int); enum bdi_stat_item { BDI_RECLAIMABLE, BDI_WRITEBACK, + BDI_WRITTEN, NR_BDI_STAT_ITEMS }; --- linux-next.orig/mm/backing-dev.c 2011-03-03 14:03:37.000000000 +0800 +++ linux-next/mm/backing-dev.c 2011-03-03 14:04:06.000000000 +0800 @@ -92,6 +92,7 @@ static int bdi_debug_stats_show(struct s "BdiDirtyThresh: %8lu kB\n" "DirtyThresh: %8lu kB\n" "BackgroundThresh: %8lu kB\n" + "BdiWritten: %8lu kB\n" "b_dirty: %8lu\n" "b_io: %8lu\n" "b_more_io: %8lu\n" @@ -99,8 +100,9 @@ static int bdi_debug_stats_show(struct s "state: %8lx\n", (unsigned long) K(bdi_stat(bdi, BDI_WRITEBACK)), (unsigned long) K(bdi_stat(bdi, BDI_RECLAIMABLE)), - K(bdi_thresh), K(dirty_thresh), - K(background_thresh), nr_dirty, nr_io, nr_more_io, + K(bdi_thresh), K(dirty_thresh), K(background_thresh), + (unsigned long) K(bdi_stat(bdi, BDI_WRITTEN)), + nr_dirty, nr_io, nr_more_io, !list_empty(&bdi->bdi_list), bdi->state); #undef K --- linux-next.orig/mm/page-writeback.c 2011-03-03 14:04:01.000000000 +0800 +++ linux-next/mm/page-writeback.c 2011-03-03 14:04:06.000000000 +0800 @@ -219,6 +219,7 @@ int dirty_bytes_handler(struct ctl_table */ static inline void __bdi_writeout_inc(struct backing_dev_info *bdi) { + __inc_bdi_stat(bdi, BDI_WRITTEN); __prop_inc_percpu_max(&vm_completions, &bdi->completions, bdi->max_prop_frac); }