linux-kernel - Re: [PATCH] blockdev: convert some macros to static inlines

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Message-ID: <yq1y5tcf9cc.fsf@sermon.lab.mkp.net>
Date:	Fri, 13 Jan 2012 00:41:07 -0500
From:	"Martin K. Petersen" <martin.petersen@...cle.com>
To:	Jens Axboe <axboe@...nel.dk>
Cc:	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-kernel@...r.kernel.org, Mike Snitzer <snitzer@...hat.com>
Subject: Re: [PATCH] blockdev: convert some macros to static inlines

>>>>> "Jens" == Jens Axboe <axboe@...nel.dk> writes:
\
Jens> I'll take Stephens if you don't mind, I prefer the simplicity of
Jens> just typing out the functions.

Stephen's patch only converted half the stubs. Here's the rest...


block: Stop using macro stubs for the bio data integrity calls

Replace preprocessor macro stubs with real function declarations to
prevent warnings when CONFIG_BLK_DEV_INTEGRITY is disabled.

Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>

diff --git a/include/linux/bio.h b/include/linux/bio.h
index 847994a..129a9c0 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -515,24 +515,64 @@ extern void bio_integrity_init(void);
 
 #else /* CONFIG_BLK_DEV_INTEGRITY */
 
-#define bio_integrity(a)		(0)
-#define bioset_integrity_create(a, b)	(0)
-#define bio_integrity_prep(a)		(0)
-#define bio_integrity_enabled(a)	(0)
+static inline int bio_integrity(struct bio *bio)
+{
+	return 0;
+}
+
+static inline int bio_integrity_enabled(struct bio *bio)
+{
+	return 0;
+}
+
+static inline int bioset_integrity_create(struct bio_set *bs, int pool_size)
+{
+	return 0;
+}
+
+static inline void bioset_integrity_free (struct bio_set *bs)
+{
+	return;
+}
+
+static inline int bio_integrity_prep(struct bio *bio)
+{
+	return 0;
+}
+
+static inline void bio_integrity_free(struct bio *bio, struct bio_set *bs)
+{
+	return;
+}
+
 static inline int bio_integrity_clone(struct bio *bio, struct bio *bio_src,
 				      gfp_t gfp_mask, struct bio_set *bs)
 {
 	return 0;
 }
-#define bioset_integrity_free(a)	do { } while (0)
-#define bio_integrity_free(a, b)	do { } while (0)
-#define bio_integrity_endio(a, b)	do { } while (0)
-#define bio_integrity_advance(a, b)	do { } while (0)
-#define bio_integrity_trim(a, b, c)	do { } while (0)
-#define bio_integrity_split(a, b, c)	do { } while (0)
-#define bio_integrity_set_tag(a, b, c)	do { } while (0)
-#define bio_integrity_get_tag(a, b, c)	do { } while (0)
-#define bio_integrity_init(a)		do { } while (0)
+
+static inline void bio_integrity_split(struct bio *bio, struct bio_pair *bp,
+				       int sectors)
+{
+	return;
+}
+
+static inline void bio_integrity_advance(struct bio *bio,
+					 unsigned int bytes_done)
+{
+	return;
+}
+
+static inline void bio_integrity_trim(struct bio *bio, unsigned int offset,
+				      unsigned int sectors)
+{
+	return;
+}
+
+static inline void bio_integrity_init(void)
+{
+	return;
+}
 
 #endif /* CONFIG_BLK_DEV_INTEGRITY */
 
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