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authorJens Axboe <axboe@fb.com>2016-09-01 19:20:33 +0300
committerJens Axboe <axboe@fb.com>2016-11-08 18:28:55 +0300
commitb57d74aff9ab92fbfb7c197c384d1adfa2827b2e (patch)
treeecb36de5f34865613c9eec3db3c0de034aaf7e33 /include/linux/backing-dev-defs.h
parent8e1de26cd5db192b52819f5ee97bab308964f3ab (diff)
downloadlinux-b57d74aff9ab92fbfb7c197c384d1adfa2827b2e.tar.xz
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 <axboe@fb.com> Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'include/linux/backing-dev-defs.h')
-rw-r--r--include/linux/backing-dev-defs.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index c357f27d5483..dc5f76d7f648 100644
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -116,6 +116,8 @@ struct bdi_writeback {
struct list_head work_list;
struct delayed_work dwork; /* work item used for writeback */
+ unsigned long dirty_sleep; /* last wait */
+
struct list_head bdi_node; /* anchored at bdi->wb_list */
#ifdef CONFIG_CGROUP_WRITEBACK