vfs: add support for a lazytime mount option

[linux.git] / mm / backing-dev.c

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 0ae0df55000bb0cac674159a20ca90345ce0c44c..915feea94c6631a9a9641846e52666683a254acc 100644 (file)
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -69,10 +69,10 @@ 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++;
@@ -80,6 +80,9 @@ 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);
@@ -98,6 +101,7 @@ 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)),
@@ -111,6 +115,7 @@ 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
 
@@ -418,6 +423,7 @@ 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);
 }