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authorAndrew Morton <akpm@linux-foundation.org>2010-10-26 17:21:10 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-26 19:52:03 -0400
commita75d377686037982cbec320bb770b19fe7be6a5d (patch)
tree878d06a0c4d3f6c86c4e6959e38289631729d09f /include
parentf8f72ad5396987e05a42cf7eff826fb2a15ff148 (diff)
types.h: move misplaced comment
This comment landed in the wrong place. Cc: Andi Kleen <andi@firstfloor.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Miller <davem@davemloft.net> Cc: Eric Paris <eparis@redhat.com> Cc: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/types.h20
1 files changed, 10 insertions, 10 deletions
diff --git a/include/linux/types.h b/include/linux/types.h
index 357dbc19606f..c2a9eb44f2fa 100644
--- a/include/linux/types.h
+++ b/include/linux/types.h
@@ -121,15 +121,7 @@ typedef __u64 u_int64_t;
121typedef __s64 int64_t; 121typedef __s64 int64_t;
122#endif 122#endif
123 123
124/* 124/* this is a special 64bit data type that is 8-byte aligned */
125 * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid
126 * common 32/64-bit compat problems.
127 * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other
128 * architectures) and to 8-byte boundaries on 64-bit architetures. The new
129 * aligned_64 type enforces 8-byte alignment so that structs containing
130 * aligned_64 values have the same alignment on 32-bit and 64-bit architectures.
131 * No conversions are necessary between 32-bit user-space and a 64-bit kernel.
132 */
133#define aligned_u64 __u64 __attribute__((aligned(8))) 125#define aligned_u64 __u64 __attribute__((aligned(8)))
134#define aligned_be64 __be64 __attribute__((aligned(8))) 126#define aligned_be64 __be64 __attribute__((aligned(8)))
135#define aligned_le64 __le64 __attribute__((aligned(8))) 127#define aligned_le64 __le64 __attribute__((aligned(8)))
@@ -186,7 +178,15 @@ typedef __u64 __bitwise __be64;
186typedef __u16 __bitwise __sum16; 178typedef __u16 __bitwise __sum16;
187typedef __u32 __bitwise __wsum; 179typedef __u32 __bitwise __wsum;
188 180
189/* this is a special 64bit data type that is 8-byte aligned */ 181/*
182 * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid
183 * common 32/64-bit compat problems.
184 * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other
185 * architectures) and to 8-byte boundaries on 64-bit architetures. The new
186 * aligned_64 type enforces 8-byte alignment so that structs containing
187 * aligned_64 values have the same alignment on 32-bit and 64-bit architectures.
188 * No conversions are necessary between 32-bit user-space and a 64-bit kernel.
189 */
190#define __aligned_u64 __u64 __attribute__((aligned(8))) 190#define __aligned_u64 __u64 __attribute__((aligned(8)))
191#define __aligned_be64 __be64 __attribute__((aligned(8))) 191#define __aligned_be64 __be64 __attribute__((aligned(8)))
192#define __aligned_le64 __le64 __attribute__((aligned(8))) 192#define __aligned_le64 __le64 __attribute__((aligned(8)))