xfs: remove XFS_HSIZE

XFS_HSIZE is an extremly confusing way to calculate the size of handle_t.
Given that handle_t always only had two sizes, and one of them isn't
even covered by XFS_HSIZE to start with just remove the macro and use
a constant sizeof expression.

Note that XFS_HSIZE isn't used in xfsprogs, xfsdump or xfstests either.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

2 files changed, 1 insertions, 6 deletions

diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index 095bdf049a3f..a9aa13e66046 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -446,10 +446,6 @@ typedef struct xfs_handle {
 } xfs_handle_t;
 #define ha_fsid ha_u._ha_fsid
 
-#define XFS_HSIZE(handle)       (((char *) &(handle).ha_fid.fid_pad      \
-                                 - (char *) &(handle))                    \
-                                 + (handle).ha_fid.fid_len)
-
 /*
  * Structure passed to XFS_IOC_SWAPEXT
  */
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index 6190697603c9..f6af76975bc8 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -120,8 +120,7 @@ xfs_find_handle(
                 handle.ha_fid.fid_pad = 0;
                 handle.ha_fid.fid_gen = inode->i_generation;
                 handle.ha_fid.fid_ino = ip->i_ino;
-
-                hsize = XFS_HSIZE(handle);
+                hsize = sizeof(xfs_handle_t);
         }
 
         error = -EFAULT;