linux-kernel - [PATCH 03/17] lightnvm: initialize ppa_addr in dev_to_generic

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Date:	Thu,  7 Jul 2016 09:54:09 +0200
From:	Matias Bjørling <m@...rling.me>
To:	linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
	axboe@...com
Cc:	Javier González <javier@...xlabs.com>,
	Matias Bjørling <m@...rling.me>
Subject: [PATCH 03/17] lightnvm: initialize ppa_addr in dev_to_generic_addr()

From: Javier González <javier@...xlabs.com>

The ->reserved bit is not initialized when allocated on stack.
This may lead targets to misinterpret the PPA as cached.

Signed-off-by: Javier González <javier@...xlabs.com>
Signed-off-by: Matias Bjørling <m@...rling.me>
---
 include/linux/lightnvm.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index 9c56148..cee4c8d 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -385,6 +385,7 @@ static inline struct ppa_addr dev_to_generic_addr(struct nvm_dev *dev,
 {
 	struct ppa_addr l;
 
+	l.ppa = 0;
 	/*
 	 * (r.ppa << X offset) & X len bitmask. X eq. blk, pg, etc.
 	 */
-- 
2.1.4