1FIEMAP_EXTENT_LAST 0x00000001 2FIEMAP_EXTENT_UNKNOWN 0x00000002 3FIEMAP_EXTENT_DELALLOC 0x00000004 4FIEMAP_EXTENT_ENCODED 0x00000008 5FIEMAP_EXTENT_DATA_ENCRYPTED 0x00000080 6FIEMAP_EXTENT_NOT_ALIGNED 0x00000100 7FIEMAP_EXTENT_DATA_INLINE 0x00000200 8FIEMAP_EXTENT_DATA_TAIL 0x00000400 9FIEMAP_EXTENT_UNWRITTEN 0x00000800 10FIEMAP_EXTENT_MERGED 0x00001000 11FIEMAP_EXTENT_SHARED 0x00002000 12