From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kara Subject: [PATCH 1/5] writeback: account per-bdi accumulated written pages Date: Tue, 8 Mar 2011 23:31:11 +0100 Message-ID: <1299623475-5512-2-git-send-email-jack@suse.cz> References: <1299623475-5512-1-git-send-email-jack@suse.cz> Cc: linux-mm@kvack.org, Wu Fengguang , Peter Zijlstra , Andrew Morton , Jan Kara , Christoph Hellwig , Dave Chinner To: linux-fsdevel@vger.kernel.org Return-path: Received: from cantor2.suse.de ([195.135.220.15]:41958 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753549Ab1CHWb0 (ORCPT ); Tue, 8 Mar 2011 17:31:26 -0500 In-Reply-To: <1299623475-5512-1-git-send-email-jack@suse.cz> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Introduce the BDI_WRITTEN counter. It will be used for waking up waiters in balance_dirty_pages(). Peter Zijlstra : Move BDI_WRITTEN accounting into __bdi_writeout_inc(). This will cover and fix fuse, which only calls bdi_writeout_inc(). CC: Andrew Morton CC: Christoph Hellwig CC: Dave Chinner CC: Peter Zijlstra 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(-) diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 4ce34fa..63ab4a5 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -40,6 +40,7 @@ typedef int (congested_fn)(void *, int); enum bdi_stat_item { BDI_RECLAIMABLE, BDI_WRITEBACK, + BDI_WRITTEN, NR_BDI_STAT_ITEMS }; diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 027100d..4d14072 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -92,6 +92,7 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v) "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 seq_file *m, void *v) "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 diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 2cb01f6..c472c1c 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -219,6 +219,7 @@ int dirty_bytes_handler(struct ctl_table *table, int write, */ 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); } -- 1.7.1