From b57d74aff9ab92fbfb7c197c384d1adfa2827b2e Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 1 Sep 2016 10:20:33 -0600 Subject: writeback: track if we're sleeping on progress in balance_dirty_pages() Note in the bdi_writeback structure whenever a task ends up sleeping waiting for progress. We can use that information in the lower layers to increase the priority of writes. Signed-off-by: Jens Axboe Reviewed-by: Jan Kara --- mm/backing-dev.c | 1 + 1 file changed, 1 insertion(+) (limited to 'mm/backing-dev.c') diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 8fde443f36d7..3bfed5ab2475 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -310,6 +310,7 @@ static int wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi, spin_lock_init(&wb->work_lock); INIT_LIST_HEAD(&wb->work_list); INIT_DELAYED_WORK(&wb->dwork, wb_workfn); + wb->dirty_sleep = jiffies; wb->congested = wb_congested_get_create(bdi, blkcg_id, gfp); if (!wb->congested) -- cgit v1.2.3-59-g8ed1b