FMR_OWN_FREE       46 fs/ext4/fsmap.h #define EXT4_FMR_OWN_FREE	FMR_OWN_FREE      /* free space */
FMR_OWN_FREE       84 fs/xfs/libxfs/xfs_fs.h #define XFS_FMR_OWN_FREE	FMR_OWN_FREE      /* free space */