From: Tang Junhui tang.junhui.linux@gmail.com
[ Upstream commit 2e17a262a2371d38d2ec03614a2675a32cef9912 ]
When bcache device is clean, dirty keys may still exist after journal replay, so we need to count these dirty keys even device in clean status, otherwise after writeback, the amount of dirty data would be incorrect.
Signed-off-by: Tang Junhui tang.junhui.linux@gmail.com Cc: stable@vger.kernel.org Signed-off-by: Coly Li colyli@suse.de Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/md/bcache/super.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index fe6e4c319b7c..9e875aba41b9 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1045,12 +1045,13 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c, }
if (BDEV_STATE(&dc->sb) == BDEV_STATE_DIRTY) { - bch_sectors_dirty_init(&dc->disk); atomic_set(&dc->has_dirty, 1); atomic_inc(&dc->count); bch_writeback_queue(dc); }
+ bch_sectors_dirty_init(&dc->disk); + bch_cached_dev_run(dc); bcache_device_link(&dc->disk, c, "bdev");