From: Tang Junhui Date: Mon, 8 Oct 2018 12:41:12 +0000 (+0800) Subject: bcache: correct dirty data statistics X-Git-Tag: v4.20-rc1~191^2~104 X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=2e17a262a2371d38d2ec03614a2675a32cef9912;p=uclinux-h8%2Flinux.git bcache: correct dirty data statistics 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 Cc: stable@vger.kernel.org Signed-off-by: Coly Li Signed-off-by: Jens Axboe --- diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 9de6695195bf..c116b6e0d85a 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1153,11 +1153,12 @@ 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); bch_writeback_queue(dc); } + bch_sectors_dirty_init(&dc->disk); + bch_cached_dev_run(dc); bcache_device_link(&dc->disk, c, "bdev"); atomic_inc(&c->attached_dev_nr);