This is a note to let you know that I've just added the patch titled bcache: trace missed reading by cache_missed to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: bcache-trace-missed-reading-by-cache_missed.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 502b291568fc7faf1ebdb2c2590f12851db0ff76 Mon Sep 17 00:00:00 2001 From: Tang Junhui <tang.junhui.linux@xxxxxxxxx> Date: Mon, 8 Oct 2018 20:41:08 +0800 Subject: bcache: trace missed reading by cache_missed From: Tang Junhui <tang.junhui.linux@xxxxxxxxx> commit 502b291568fc7faf1ebdb2c2590f12851db0ff76 upstream. Missed reading IOs are identified by s->cache_missed, not the s->cache_miss, so in trace_bcache_read() using trace_bcache_read to identify whether the IO is missed or not. Signed-off-by: Tang Junhui <tang.junhui.linux@xxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Coly Li <colyli@xxxxxxx> Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/md/bcache/request.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -850,7 +850,7 @@ static void cached_dev_read_done_bh(stru bch_mark_cache_accounting(s->iop.c, s->d, !s->cache_missed, s->iop.bypass); - trace_bcache_read(s->orig_bio, !s->cache_miss, s->iop.bypass); + trace_bcache_read(s->orig_bio, !s->cache_missed, s->iop.bypass); if (s->iop.status) continue_at_nobarrier(cl, cached_dev_read_error, bcache_wq); Patches currently in stable-queue which might be from tang.junhui.linux@xxxxxxxxx are queue-4.19/bcache-fix-ioctl-in-flash-device.patch queue-4.19/bcache-trace-missed-reading-by-cache_missed.patch queue-4.19/bcache-fix-miss-key-refill-end-in-writeback.patch queue-4.19/bcache-correct-dirty-data-statistics.patch