linux-kernel - [PATCH] lightnvm: pblk: fix chunk close trace event check

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Date:   Fri, 26 Oct 2018 10:12:24 +0200
From:   Hans Holmberg <hans@...tronix.com>
To:     Matias Bjorling <mb@...htnvm.io>
Cc:     linux-block@...r.kernel.org, Javier Gonzales <javier@...xlabs.com>,
        linux-kernel@...r.kernel.org,
        Hans Holmberg <hans.holmberg@...xlabs.com>
Subject: [PATCH] lightnvm: pblk: fix chunk close trace event check

The check for chunk closes suffers from an off-by-one issue, leading
to chunk close events not being traced. Fix this.

Fixes: 4c44abf43d00 ("lightnvm: pblk: add trace events for chunk states")

Signed-off-by: Hans Holmberg <hans.holmberg@...xlabs.com>
---

 drivers/lightnvm/pblk-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index 6944aac43b01..6581c35f51ee 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -531,7 +531,7 @@ void pblk_check_chunk_state_update(struct pblk *pblk, struct nvm_rq *rqd)
 		if (caddr == 0)
 			trace_pblk_chunk_state(pblk_disk_name(pblk),
 							ppa, NVM_CHK_ST_OPEN);
-		else if (caddr == chunk->cnlb)
+		else if (caddr == (chunk->cnlb - 1))
 			trace_pblk_chunk_state(pblk_disk_name(pblk),
 							ppa, NVM_CHK_ST_CLOSED);
 	}
-- 
2.7.4