Remove Btrfs compat code for older kernels

Btrfs had compatibility code for kernels back to 2.6.18.  These have
been removed, and will be maintained in a separate backport
git tree from now on.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 0 insertions, 6 deletions

diff --git a/fs/btrfs/crc32c.h b/fs/btrfs/crc32c.h
index bf6c12e85730..4f0fefed132a 100644
--- a/fs/btrfs/crc32c.h
+++ b/fs/btrfs/crc32c.h
@@ -96,13 +96,7 @@ static inline u32 __btrfs_crc32c(u32 crc, unsigned char const *address,
  * We must workaround older implementations of crc32c_le()
  * found on older kernel versions.
  */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
-#define btrfs_crc32c(seed, data, length) \
-        __cpu_to_le32( __btrfs_crc32c( __le32_to_cpu(seed), \
-                                      (unsigned char const *)data, length) )
-#else
 #define btrfs_crc32c(seed, data, length) \
         __btrfs_crc32c(seed, (unsigned char const *)data, length)
 #endif
-#endif