[PATCH] bcache: trace missed reading by cache_missed

[PATCH] bcache: trace missed reading by cache_missed

[Junhui Tang]

>From acd3853bca04799659cdb1c90675d36b6397a373 Mon Sep 17 00:00:00 2001
From: Tang Junhui <tang.junhui.linux@gmail.com>
Date: Wed, 5 Sep 2018 21:00:44 +0800
Subject: [PATCH] bcache: trace missed reading by cache_missed

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 wether the IO is missed or not.

Signed-off-by: Tang Junhui <tang.junhui.linux@gmail.com>
---
 drivers/md/bcache/request.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 7dbe8b6..928fa99 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -845,7 +845,7 @@ static void cached_dev_read_done_bh(struct closure *cl)

  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);
-- 
1.8.3.1