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| author | Jan Kara <jack@suse.cz> | 2010-12-08 22:44:24 -0600 |
|---|---|---|
| committer | Wu Fengguang <fengguang.wu@intel.com> | 2011-07-09 22:09:01 -0700 |
| commit | f7d2b1ecd0c714adefc7d3a942ef87beb828a763 (patch) | |
| tree | 7c5adb0abd73d3ad449b94698dadbaceb573a6f4 /mm | |
| parent | d46db3d58233be4be980eb1e42eebe7808bcabab (diff) | |
| download | linux-f7d2b1ecd0c714adefc7d3a942ef87beb828a763.tar.gz | |
writeback: account per-bdi accumulated written pages
Introduce the BDI_WRITTEN counter. It will be used for estimating the bdi's write bandwidth. Peter Zijlstra <a.p.zijlstra@chello.nl>: Move BDI_WRITTEN accounting into __bdi_writeout_inc(). This will cover and fix fuse, which only calls bdi_writeout_inc(). CC: Michael Rubin <mrubin@google.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/backing-dev.c | 10 | ||||
| -rw-r--r-- | mm/page-writeback.c | 1 |
2 files changed, 9 insertions, 2 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 7ba303be5e03..83f18a1d9d10 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: %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" @@ -104,8 +105,13 @@ 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 9d6ac2b6d942..8cd71376c63d 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); } |