From 9e5c353510b26500bd6b8309823ac9ef2837b761 Mon Sep 17 00:00:00 2001 From: Slava Pestov Date: Thu, 1 May 2014 13:48:57 -0700 Subject: bcache: fix uninterruptible sleep in writeback thread There were two issues here: - writeback thread did not start until the device first became dirty - writeback thread used uninterruptible sleep once running Without this patch I see kernel warnings printed and a load average of 1.52 after booting my test VM. With this patch the warnings are gone and the load average is near 0.00 as expected. Signed-off-by: Kent Overstreet --- drivers/md/bcache/writeback.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/md/bcache/writeback.h') diff --git a/drivers/md/bcache/writeback.h b/drivers/md/bcache/writeback.h index e2f8598937ac..0a9dab187b79 100644 --- a/drivers/md/bcache/writeback.h +++ b/drivers/md/bcache/writeback.h @@ -85,6 +85,7 @@ static inline void bch_writeback_add(struct cached_dev *dc) void bcache_dev_sectors_dirty_add(struct cache_set *, unsigned, uint64_t, int); void bch_sectors_dirty_init(struct cached_dev *dc); -int bch_cached_dev_writeback_init(struct cached_dev *); +void bch_cached_dev_writeback_init(struct cached_dev *); +int bch_cached_dev_writeback_start(struct cached_dev *); #endif -- cgit