linux-kernel - [PATCH] BLOCK: Hide the contents of linux/bio.h if CONFIG

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Date:	Wed, 01 Aug 2007 18:50:46 +0100
From:	David Howells <dhowells@...hat.com>
To:	torvalds@...l.org, akpm@...l.org, James.Bottomley@...elEye.com,
	jens.axboe@...cle.com
Cc:	linux-kernel@...r.kernel.org, dhowells@...hat.com
Subject: [PATCH] BLOCK: Hide the contents of linux/bio.h if CONFIG_BLOCK=n
	[try #2]

From: David Howells <dhowells@...hat.com>

Hide the contents of linux/bio.h if CONFIG_BLOCK=n as there shouldn't be
compiled that uses it.

Signed-off-by: David Howells <dhowells@...hat.com>
---

 include/linux/bio.h |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/include/linux/bio.h b/include/linux/bio.h
index 4d85262..1ddef34 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -24,6 +24,8 @@
 #include <linux/mempool.h>
 #include <linux/ioprio.h>
 
+#ifdef CONFIG_BLOCK
+
 /* Platforms may set this to teach the BIO layer about IOMMU hardware. */
 #include <asm/io.h>
 
@@ -361,4 +363,5 @@ static inline char *__bio_kmap_irq(struct bio *bio, unsigned short idx,
 	__bio_kmap_irq((bio), (bio)->bi_idx, (flags))
 #define bio_kunmap_irq(buf,flags)	__bio_kunmap_irq(buf, flags)
 
+#endif /* CONFIG_BLOCK */
 #endif /* __LINUX_BIO_H */

-
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