linux-kernel - [PATCH 08/15] lightnvm: make address conversions depend on generic device

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Date:   Wed, 28 Feb 2018 16:49:28 +0100
From:   "Javier González" <jg@...htnvm.io>
To:     mb@...htnvm.io
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-nvme@...ts.infradead.org,
        Javier González <javier@...xlabs.com>
Subject: [PATCH 08/15] lightnvm: make address conversions depend on generic device

On address conversions, use the generic device, instead of the target
device. This allows to use conversions outside of the target's realm.

Signed-off-by: Javier González <javier@...xlabs.com>
---
 drivers/lightnvm/core.c  | 4 ++--
 include/linux/lightnvm.h | 8 ++++----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index 36d76de22dfc..ed33e0b11788 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -581,7 +581,7 @@ static void nvm_ppa_tgt_to_dev(struct nvm_tgt_dev *tgt_dev,
 
 	for (i = 0; i < nr_ppas; i++) {
 		nvm_map_to_dev(tgt_dev, &ppa_list[i]);
-		ppa_list[i] = generic_to_dev_addr(tgt_dev, ppa_list[i]);
+		ppa_list[i] = generic_to_dev_addr(tgt_dev->parent, ppa_list[i]);
 	}
 }
 
@@ -591,7 +591,7 @@ static void nvm_ppa_dev_to_tgt(struct nvm_tgt_dev *tgt_dev,
 	int i;
 
 	for (i = 0; i < nr_ppas; i++) {
-		ppa_list[i] = dev_to_generic_addr(tgt_dev, ppa_list[i]);
+		ppa_list[i] = dev_to_generic_addr(tgt_dev->parent, ppa_list[i]);
 		nvm_map_to_tgt(tgt_dev, &ppa_list[i]);
 	}
 }
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index 73110adf27ad..e878b95aeec4 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -399,10 +399,10 @@ struct nvm_dev {
 	struct list_head targets;
 };
 
-static inline struct ppa_addr generic_to_dev_addr(struct nvm_tgt_dev *tgt_dev,
+static inline struct ppa_addr generic_to_dev_addr(struct nvm_dev *dev,
 						  struct ppa_addr r)
 {
-	struct nvm_geo *geo = &tgt_dev->geo;
+	struct nvm_geo *geo = &dev->geo;
 	struct ppa_addr l;
 
 	if (geo->version == NVM_OCSSD_SPEC_12) {
@@ -427,10 +427,10 @@ static inline struct ppa_addr generic_to_dev_addr(struct nvm_tgt_dev *tgt_dev,
 	return l;
 }
 
-static inline struct ppa_addr dev_to_generic_addr(struct nvm_tgt_dev *tgt_dev,
+static inline struct ppa_addr dev_to_generic_addr(struct nvm_dev *dev,
 						  struct ppa_addr r)
 {
-	struct nvm_geo *geo = &tgt_dev->geo;
+	struct nvm_geo *geo = &dev->geo;
 	struct ppa_addr l;
 
 	l.ppa = 0;
-- 
2.7.4