[PATCH] Define BITS_PER_BYTE

This can make the intent behind some arithmetic expressions clearer.

Signed-off-by: Bryan O'Sullivan <bos@pathscale.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/include/linux/types.h b/include/linux/types.h
index 21b9ce80364429abd04e9ef718834d0a6427eb15..54ae2d59e71bcd2b34c54a099dcb6773736b2bcb 100644 (file)
--- a/include/linux/types.h
+++ b/include/linux/types.h
@@ -8,6 +8,8 @@
        (((bits)+BITS_PER_LONG-1)/BITS_PER_LONG)
 #define DECLARE_BITMAP(name,bits) \
        unsigned long name[BITS_TO_LONGS(bits)]
+
+#define BITS_PER_BYTE 8
 #endif
 
 #include <linux/posix_types.h>