linux-kernel - [PATCH 15/25] lightnvm: move rq->error to nvm

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Message-Id: <1452581379-18162-16-git-send-email-m@bjorling.me>
Date:	Tue, 12 Jan 2016 07:49:29 +0100
From:	Matias Bjørling <m@...rling.me>
To:	linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
	axboe@...com
Cc:	Matias Bjørling <m@...rling.me>
Subject: [PATCH 15/25] lightnvm: move rq->error to nvm_rq->error

Instead of passing request error into the LightNVM modules, incorporate
it into the nvm_rq.

Signed-off-by: Matias Bjørling <m@...rling.me>
---
 drivers/lightnvm/core.c   | 3 ++-
 drivers/lightnvm/gennvm.c | 6 +++---
 drivers/lightnvm/rrpc.c   | 2 +-
 include/linux/lightnvm.h  | 4 +++-
 4 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index cd674af..dad84dd 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -291,7 +291,8 @@ EXPORT_SYMBOL(nvm_erase_ppa);
 
 void nvm_end_io(struct nvm_rq *rqd, int error)
 {
-	rqd->end_io(rqd, error);
+	rqd->error = error;
+	rqd->end_io(rqd);
 }
 EXPORT_SYMBOL(nvm_end_io);
 
diff --git a/drivers/lightnvm/gennvm.c b/drivers/lightnvm/gennvm.c
index 262da6d..4c15846 100644
--- a/drivers/lightnvm/gennvm.c
+++ b/drivers/lightnvm/gennvm.c
@@ -363,11 +363,11 @@ static void gennvm_mark_blk_bad(struct nvm_dev *dev, struct nvm_rq *rqd)
 		gennvm_blk_set_type(dev, &rqd->ppa_addr, 2);
 }
 
-static void gennvm_end_io(struct nvm_rq *rqd, int error)
+static void gennvm_end_io(struct nvm_rq *rqd)
 {
 	struct nvm_tgt_instance *ins = rqd->ins;
 
-	switch (error) {
+	switch (rqd->error) {
 	case NVM_RSP_SUCCESS:
 	case NVM_RSP_ERR_EMPTYPAGE:
 		break;
@@ -375,7 +375,7 @@ static void gennvm_end_io(struct nvm_rq *rqd, int error)
 		gennvm_mark_blk_bad(rqd->dev, rqd);
 	}
 
-	ins->tt->end_io(rqd, error);
+	ins->tt->end_io(rqd);
 }
 
 static int gennvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index ec7aacf..9a5d940 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -658,7 +658,7 @@ static void rrpc_end_io_write(struct rrpc *rrpc, struct rrpc_rq *rrqd,
 	}
 }
 
-static void rrpc_end_io(struct nvm_rq *rqd, int error)
+static void rrpc_end_io(struct nvm_rq *rqd)
 {
 	struct rrpc *rrpc = container_of(rqd->ins, struct rrpc, instance);
 	struct rrpc_rq *rrqd = nvm_rq_to_pdu(rqd);
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h
index a83298f..9acc71a 100644
--- a/include/linux/lightnvm.h
+++ b/include/linux/lightnvm.h
@@ -149,7 +149,7 @@ struct ppa_addr {
 };
 
 struct nvm_rq;
-typedef void (nvm_end_io_fn)(struct nvm_rq *, int);
+typedef void (nvm_end_io_fn)(struct nvm_rq *);
 
 struct nvm_rq {
 	struct nvm_tgt_instance *ins;
@@ -173,6 +173,8 @@ struct nvm_rq {
 	uint8_t opcode;
 	uint16_t nr_pages;
 	uint16_t flags;
+
+	int error;
 };
 
 static inline struct nvm_rq *nvm_rq_from_pdu(void *pdu)
-- 
2.1.4