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Message-Id: <20230603165949.1753326-1-masahiroy@kernel.org>
Date:   Sun,  4 Jun 2023 01:59:49 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>,
        Jack Wang <jinpu.wang@...os.com>,
        "Md. Haris Iqbal" <haris.iqbal@...os.com>,
        Nick Terrell <terrelln@...com>
Subject: [PATCH] block/rnbd: fix mixed module-builtin object

With CONFIG_BLK_DEV_RNBD_CLIENT=m and CONFIG_BLK_DEV_RNBD_SERVER=y
(or vice versa), rnbd-common.o is linked to a module and also to
vmlinux even though CFLAGS are different between builtins and modules.

This is the same situation as fixed by commit 637a642f5ca5 ("zstd:
Fixing mixed module-builtin objects").

Turn rnbd_access_mode_str() into an inline function.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 drivers/block/rnbd/Makefile      |  6 ++----
 drivers/block/rnbd/rnbd-common.c | 23 -----------------------
 drivers/block/rnbd/rnbd-proto.h  | 14 +++++++++++++-
 3 files changed, 15 insertions(+), 28 deletions(-)
 delete mode 100644 drivers/block/rnbd/rnbd-common.c

diff --git a/drivers/block/rnbd/Makefile b/drivers/block/rnbd/Makefile
index 40b31630822c..208e5f865497 100644
--- a/drivers/block/rnbd/Makefile
+++ b/drivers/block/rnbd/Makefile
@@ -3,13 +3,11 @@
 ccflags-y := -I$(srctree)/drivers/infiniband/ulp/rtrs
 
 rnbd-client-y := rnbd-clt.o \
-		  rnbd-clt-sysfs.o \
-		  rnbd-common.o
+		  rnbd-clt-sysfs.o
 
 CFLAGS_rnbd-srv-trace.o = -I$(src)
 
-rnbd-server-y := rnbd-common.o \
-		  rnbd-srv.o \
+rnbd-server-y := rnbd-srv.o \
 		  rnbd-srv-sysfs.o \
 		  rnbd-srv-trace.o
 
diff --git a/drivers/block/rnbd/rnbd-common.c b/drivers/block/rnbd/rnbd-common.c
deleted file mode 100644
index 596c3f732403..000000000000
--- a/drivers/block/rnbd/rnbd-common.c
+++ /dev/null
@@ -1,23 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * RDMA Network Block Driver
- *
- * Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved.
- * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved.
- * Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved.
- */
-#include "rnbd-proto.h"
-
-const char *rnbd_access_mode_str(enum rnbd_access_mode mode)
-{
-	switch (mode) {
-	case RNBD_ACCESS_RO:
-		return "ro";
-	case RNBD_ACCESS_RW:
-		return "rw";
-	case RNBD_ACCESS_MIGRATION:
-		return "migration";
-	default:
-		return "unknown";
-	}
-}
diff --git a/drivers/block/rnbd/rnbd-proto.h b/drivers/block/rnbd/rnbd-proto.h
index da1d0542d7e2..57afe9b07fda 100644
--- a/drivers/block/rnbd/rnbd-proto.h
+++ b/drivers/block/rnbd/rnbd-proto.h
@@ -300,6 +300,18 @@ static inline u32 rq_to_rnbd_flags(struct request *rq)
 	return rnbd_opf;
 }
 
-const char *rnbd_access_mode_str(enum rnbd_access_mode mode);
+static inline const char *rnbd_access_mode_str(enum rnbd_access_mode mode)
+{
+	switch (mode) {
+	case RNBD_ACCESS_RO:
+		return "ro";
+	case RNBD_ACCESS_RW:
+		return "rw";
+	case RNBD_ACCESS_MIGRATION:
+		return "migration";
+	default:
+		return "unknown";
+	}
+}
 
 #endif /* RNBD_PROTO_H */
-- 
2.39.2

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