xfs: Remove the macro XFS_BUF_PTR

Remove the definition and usages of the macro XFS_BUF_PTR.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 3baebe2..3ee5f8a 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -94,7 +94,7 @@
 			byte_cnt = pathlen;
 		pathlen -= byte_cnt;
 
-		memcpy(link, XFS_BUF_PTR(bp), byte_cnt);
+		memcpy(link, bp->b_addr, byte_cnt);
 		xfs_buf_relse(bp);
 	}
 
@@ -1654,7 +1654,7 @@
 			}
 			pathlen -= byte_cnt;
 
-			memcpy(XFS_BUF_PTR(bp), cur_chunk, byte_cnt);
+			memcpy(bp->b_addr, cur_chunk, byte_cnt);
 			cur_chunk += byte_cnt;
 
 			xfs_trans_log_buf(tp, bp, 0, byte_cnt - 1);
@@ -1999,7 +1999,7 @@
 					  mp, bp, XFS_BUF_ADDR(bp));
 			break;
 		}
-		memset(XFS_BUF_PTR(bp) +
+		memset(bp->b_addr +
 			(offset - XFS_FSB_TO_B(mp, imap.br_startoff)),
 		      0, lastoffset - offset + 1);
 		XFS_BUF_UNDONE(bp);