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-rw-r--r--mm/backing-dev.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 7690ec77c722..6dc4580df2af 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -49,10 +49,10 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v)
unsigned long background_thresh;
unsigned long dirty_thresh;
unsigned long bdi_thresh;
- unsigned long nr_dirty, nr_io, nr_more_io;
+ unsigned long nr_dirty, nr_io, nr_more_io, nr_dirty_time;
struct inode *inode;
- nr_dirty = nr_io = nr_more_io = 0;
+ nr_dirty = nr_io = nr_more_io = nr_dirty_time = 0;
spin_lock(&wb->list_lock);
list_for_each_entry(inode, &wb->b_dirty, i_wb_list)
nr_dirty++;
@@ -60,6 +60,9 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v)
nr_io++;
list_for_each_entry(inode, &wb->b_more_io, i_wb_list)
nr_more_io++;
+ list_for_each_entry(inode, &wb->b_dirty_time, i_wb_list)
+ if (inode->i_state & I_DIRTY_TIME)
+ nr_dirty_time++;
spin_unlock(&wb->list_lock);
global_dirty_limits(&background_thresh, &dirty_thresh);
@@ -78,6 +81,7 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v)
"b_dirty: %10lu\n"
"b_io: %10lu\n"
"b_more_io: %10lu\n"
+ "b_dirty_time: %10lu\n"
"bdi_list: %10u\n"
"state: %10lx\n",
(unsigned long) K(bdi_stat(bdi, BDI_WRITEBACK)),
@@ -91,6 +95,7 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v)
nr_dirty,
nr_io,
nr_more_io,
+ nr_dirty_time,
!list_empty(&bdi->bdi_list), bdi->state);
#undef K
@@ -380,6 +385,7 @@ static void bdi_wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi)
INIT_LIST_HEAD(&wb->b_dirty);
INIT_LIST_HEAD(&wb->b_io);
INIT_LIST_HEAD(&wb->b_more_io);
+ INIT_LIST_HEAD(&wb->b_dirty_time);
spin_lock_init(&wb->list_lock);
INIT_DELAYED_WORK(&wb->dwork, bdi_writeback_workfn);
}

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