bsddf (*) Makes `df' act like BSD.
minixdf Makes `df' act like Minix.
-check Check block and inode bitmaps at mount time
- (requires CONFIG_EXT2_CHECK).
check=none, nocheck (*) Don't do extra checking of bitmaps on mount
(check=normal and check=strict options removed)
nobh Do not attach buffer_heads to file pagecache.
+xip Use execute in place (no caching) if possible
+
grpquota,noquota,quota,usrquota Quota options are silently ignored by ext2.