xfs: log proper length of superblock

xfs_trans_log_buf takes first byte, last byte as args.  In this
case, it should be from 0 to sizeof() - 1.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
index a08dd8f..ac6cdca 100644 (file)
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -928,7 +928,7 @@ xfs_log_sb(
 
        xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb);
        xfs_trans_buf_set_type(tp, bp, XFS_BLFT_SB_BUF);
-       xfs_trans_log_buf(tp, bp, 0, sizeof(struct xfs_dsb));
+       xfs_trans_log_buf(tp, bp, 0, sizeof(struct xfs_dsb) - 1);
 }
 
 /*