4.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tang Junhui <tang.junhui.li...@gmail.com>
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.li...@gmail.com>
Cc: sta...@vger.kernel.org
Signed-off-by: Coly Li <col...@suse.de>
Signed-off-by: Jens Axboe <ax...@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
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
@@ -843,7 +843,7 @@ 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);
