[PATCH] befs: introduce on-disk endian types

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 22 insertions, 18 deletions

diff --git a/fs/befs/befs_fs_types.h b/fs/befs/befs_fs_types.h
index d124b4c51179..128066b1c4b0 100644
--- a/fs/befs/befs_fs_types.h
+++ b/fs/befs/befs_fs_types.h
@@ -79,6 +79,10 @@ enum inode_flags {
  * On-Disk datastructures of BeFS
  */
 
+typedef u64 __bitwise fs64;
+typedef u32 __bitwise fs32;
+typedef u16 __bitwise fs16;
+
 typedef u64 befs_off_t;
 typedef u64 befs_time_t;
 
diff --git a/fs/befs/endian.h b/fs/befs/endian.h
index d77a26e7bd97..979c543e6c58 100644
--- a/fs/befs/endian.h
+++ b/fs/befs/endian.h
@@ -12,57 +12,57 @@
 #include <linux/byteorder/generic.h>
 
 static inline u64
-fs64_to_cpu(const struct super_block *sb, u64 n)
+fs64_to_cpu(const struct super_block *sb, fs64 n)
 {
         if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
-                return le64_to_cpu(n);
+                return le64_to_cpu((__force __le64)n);
         else
-                return be64_to_cpu(n);
+                return be64_to_cpu((__force __be64)n);
 }
 
-static inline u64
+static inline fs64
 cpu_to_fs64(const struct super_block *sb, u64 n)
 {
         if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
-                return cpu_to_le64(n);
+                return (__force fs64)cpu_to_le64(n);
         else
-                return cpu_to_be64(n);
+                return (__force fs64)cpu_to_be64(n);
 }
 
 static inline u32
-fs32_to_cpu(const struct super_block *sb, u32 n)
+fs32_to_cpu(const struct super_block *sb, fs32 n)
 {
         if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
-                return le32_to_cpu(n);
+                return le32_to_cpu((__force __le32)n);
         else
-                return be32_to_cpu(n);
+                return be32_to_cpu((__force __be32)n);
 }
 
-static inline u32
+static inline fs32
 cpu_to_fs32(const struct super_block *sb, u32 n)
 {
         if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
-                return cpu_to_le32(n);
+                return (__force fs32)cpu_to_le32(n);
         else
-                return cpu_to_be32(n);
+                return (__force fs32)cpu_to_be32(n);
 }
 
 static inline u16
-fs16_to_cpu(const struct super_block *sb, u16 n)
+fs16_to_cpu(const struct super_block *sb, fs16 n)
 {
         if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
-                return le16_to_cpu(n);
+                return le16_to_cpu((__force __le16)n);
         else
-                return be16_to_cpu(n);
+                return be16_to_cpu((__force __be16)n);
 }
 
-static inline u16
+static inline fs16
 cpu_to_fs16(const struct super_block *sb, u16 n)
 {
         if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
-                return cpu_to_le16(n);
+                return (__force fs16)cpu_to_le16(n);
         else
-                return cpu_to_be16(n);
+                return (__force fs16)cpu_to_be16(n);
 }
 
 /* Composite types below here */