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| author | Wu Fengguang <fengguang.wu@intel.com> | 2011-01-23 10:07:47 -0600 |
|---|---|---|
| committer | Wu Fengguang <fengguang.wu@intel.com> | 2011-10-03 21:08:56 +0800 |
| commit | c8e28ce049faa53a470c132893abbc9f2bde9420 (patch) | |
| tree | 40553e72f50a613c93f4175d1d28d06abc90db65 | |
| parent | 9b13776977d45505469edc6decc93e9e3799afe2 (diff) | |
| download | linux-c8e28ce049faa53a470c132893abbc9f2bde9420.tar.gz linux-c8e28ce049faa53a470c132893abbc9f2bde9420.tar.bz2 linux-c8e28ce049faa53a470c132893abbc9f2bde9420.zip | |
writeback: account per-bdi accumulated dirtied pages
Introduce the BDI_DIRTIED counter. It will be used for estimating the
bdi's dirty bandwidth.
CC: Jan Kara <jack@suse.cz>
CC: Michael Rubin <mrubin@google.com>
CC: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
| -rw-r--r-- | include/linux/backing-dev.h | 1 | ||||
| -rw-r--r-- | mm/backing-dev.c | 2 | ||||
| -rw-r--r-- | mm/page-writeback.c | 1 |
3 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 3b2f9cb82986..9ca241a70c49 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_DIRTIED, BDI_WRITTEN, NR_BDI_STAT_ITEMS }; diff --git a/mm/backing-dev.c b/mm/backing-dev.c index a87da524a4a0..fea7e6efd1d7 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -97,6 +97,7 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v) "BdiDirtyThresh: %10lu kB\n" "DirtyThresh: %10lu kB\n" "BackgroundThresh: %10lu kB\n" + "BdiDirtied: %10lu kB\n" "BdiWritten: %10lu kB\n" "BdiWriteBandwidth: %10lu kBps\n" "b_dirty: %10lu\n" @@ -109,6 +110,7 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v) K(bdi_thresh), K(dirty_thresh), K(background_thresh), + (unsigned long) K(bdi_stat(bdi, BDI_DIRTIED)), (unsigned long) K(bdi_stat(bdi, BDI_WRITTEN)), (unsigned long) K(bdi->write_bandwidth), nr_dirty, diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 0e309cd1b5b9..0e6dd5c2ed31 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -1322,6 +1322,7 @@ void account_page_dirtied(struct page *page, struct address_space *mapping) __inc_zone_page_state(page, NR_FILE_DIRTY); __inc_zone_page_state(page, NR_DIRTIED); __inc_bdi_stat(mapping->backing_dev_info, BDI_RECLAIMABLE); + __inc_bdi_stat(mapping->backing_dev_info, BDI_DIRTIED); task_dirty_inc(current); task_io_account_write(PAGE_CACHE_SIZE); } |