[PATCH 01/10] writeback: account per-bdi accumulated dirtied pages
From: Wu Fengguang <hidden>
Date: 2011-08-26 11:38:14
Also in:
linux-fsdevel, lkml
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 <redacted> CC: Peter Zijlstra <redacted> Signed-off-by: Wu Fengguang <redacted> --- include/linux/backing-dev.h | 1 + mm/backing-dev.c | 2 ++ mm/page-writeback.c | 1 + 3 files changed, 4 insertions(+)
--- linux-next.orig/include/linux/backing-dev.h 2011-08-16 09:30:23.000000000 +0800
+++ linux-next/include/linux/backing-dev.h 2011-08-17 10:15:45.000000000 +0800@@ -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 }; --- linux-next.orig/mm/page-writeback.c 2011-08-16 09:30:23.000000000 +0800 +++ linux-next/mm/page-writeback.c 2011-08-17 20:35:22.000000000 +0800
@@ -1333,6 +1333,7 @@ void account_page_dirtied(struct page *p __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); } --- linux-next.orig/mm/backing-dev.c 2011-08-16 09:30:23.000000000 +0800 +++ linux-next/mm/backing-dev.c 2011-08-17 10:15:45.000000000 +0800
@@ -97,6 +97,7 @@ static int bdi_debug_stats_show(struct s "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 s 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, --
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