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