xfs: move the di_flags2 field to struct xfs_inode

In preparation of removing the historic icinode struct, move the flags2
field into the containing xfs_inode structure.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
index 6c81474..82ee4b6 100644
--- a/fs/xfs/libxfs/xfs_inode_buf.c
+++ b/fs/xfs/libxfs/xfs_inode_buf.c
@@ -240,7 +240,7 @@ xfs_inode_from_disk(
 		inode_set_iversion_queried(inode,
 					   be64_to_cpu(from->di_changecount));
 		to->di_crtime = xfs_inode_from_disk_ts(from, from->di_crtime);
-		to->di_flags2 = be64_to_cpu(from->di_flags2);
+		ip->i_diflags2 = be64_to_cpu(from->di_flags2);
 		ip->i_cowextsize = be32_to_cpu(from->di_cowextsize);
 	}
 
@@ -319,7 +319,7 @@ xfs_inode_to_disk(
 		to->di_version = 3;
 		to->di_changecount = cpu_to_be64(inode_peek_iversion(inode));
 		to->di_crtime = xfs_inode_to_disk_ts(ip, from->di_crtime);
-		to->di_flags2 = cpu_to_be64(from->di_flags2);
+		to->di_flags2 = cpu_to_be64(ip->i_diflags2);
 		to->di_cowextsize = cpu_to_be32(ip->i_cowextsize);
 		to->di_ino = cpu_to_be64(ip->i_ino);
 		to->di_lsn = cpu_to_be64(lsn);