xfs: Use defines for CRC offsets in all cases

Some calls to crc functions used useful #defines,
others used awkward offsetof() constructs.

Switch them all to #define to make things a bit cleaner.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h
index 3fc109819c34..0fdd4109c624 100644
--- a/fs/xfs/xfs_ag.h
+++ b/fs/xfs/xfs_ag.h
@@ -89,6 +89,8 @@ typedef struct xfs_agf {
         /* structure must be padded to 64 bit alignment */
 } xfs_agf_t;
 
+#define XFS_AGF_CRC_OFF         offsetof(struct xfs_agf, agf_crc)
+
 #define XFS_AGF_MAGICNUM        0x00000001
 #define XFS_AGF_VERSIONNUM      0x00000002
 #define XFS_AGF_SEQNO           0x00000004
@@ -167,6 +169,8 @@ typedef struct xfs_agi {
         /* structure must be padded to 64 bit alignment */
 } xfs_agi_t;
 
+#define XFS_AGI_CRC_OFF         offsetof(struct xfs_agi, agi_crc)
+
 #define XFS_AGI_MAGICNUM        0x00000001
 #define XFS_AGI_VERSIONNUM      0x00000002
 #define XFS_AGI_SEQNO           0x00000004
@@ -222,6 +226,8 @@ typedef struct xfs_agfl {
         __be32          agfl_bno[];     /* actually XFS_AGFL_SIZE(mp) */
 } xfs_agfl_t;
 
+#define XFS_AGFL_CRC_OFF        offsetof(struct xfs_agfl, agfl_crc)
+
 /*
  * tags for inode radix tree
  */