4.18-stable review patch. If anyone has any objections, please let me know.
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From: Tang Junhui tang.junhui.linux@gmail.com
commit 2e17a262a2371d38d2ec03614a2675a32cef9912 upstream.
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: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/md/bcache/super.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1131,11 +1131,12 @@ int bch_cached_dev_attach(struct cached_ }
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");