- if (!test_opt(inode->i_sb, EXTENTS))
- /*
- * if mounted with noextents we don't allow the migrate
- */
- return -EINVAL;
-
- if ((EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
+ /*
+ * If the filesystem does not support extents, or the inode
+ * already is extent-based, error out.
+ */
+ if (!EXT4_HAS_INCOMPAT_FEATURE(inode->i_sb,
+ EXT4_FEATURE_INCOMPAT_EXTENTS) ||
+ (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))