From mboxrd@z Thu Jan 1 00:00:00 1970 From: Coly Li Subject: [PATCH 02/15] bcache: trace missed reading by cache_missed Date: Mon, 8 Oct 2018 20:41:08 +0800 Message-ID: <20181008124121.20192-3-colyli@suse.de> References: <20181008124121.20192-1-colyli@suse.de> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20181008124121.20192-1-colyli@suse.de> Sender: stable-owner@vger.kernel.org To: axboe@kernel.dk Cc: linux-bcache@vger.kernel.org, linux-block@vger.kernel.org, Tang Junhui , stable@vger.kernel.org, Coly Li List-Id: linux-bcache@vger.kernel.org From: Tang Junhui 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 Cc: stable@vger.kernel.org Signed-off-by: Coly Li --- 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 51be355a3309..4946d486f734 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -850,7 +850,7 @@ 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); -- 2.19.0