extra_isize      1809 fs/ext4/ext4.h EXT4_FEATURE_RO_COMPAT_FUNCS(extra_isize,	EXTRA_ISIZE)
extra_isize      2848 fs/f2fs/f2fs.h #define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field)		\
extra_isize      2851 fs/f2fs/f2fs.h 		<= (F2FS_OLD_ATTRIBUTE_SIZE + (extra_isize)))	\