how to set nointegrity in file system / (rpi 3 b)

[acconciox]

Hi, this is my fstab:
Im having bad time with a bad microsd i wonder if reducing i/o i can revitalize it any suggest is welcome, from wiki arch: fstab option for / is nointegrity, but fstab is not where / file system is set.
$this->bbcode_second_pass_code('', '
# <file system> <dir> <type> <options> <dump> <pass>
/dev/mmcblk0p1 /boot vfat defaults 0 0
tmpfs /var/log tmpfs size=1M,nodev,nosuid 0 0
tmpfs /var/tmp tmpfs size=1M,nodev,nosuid 0 0
')

cmdline.txt:
$this->bbcode_second_pass_code('', '
root=/dev/mmcblk0p2 rw rootwait console=ttyAMA0,115200 console=tty1
selinux=0 plymouth.enable=0 smsc95xx.turbo_mode=N dwc_otg.lpm_enable=0
kgdboc=ttyAMA0,115200 elevator=noop
')
i wonder if is possible to add in raspberry pi 3b cmdline.txt this option of mount: nointegrity, i would like to test it
$this->bbcode_second_pass_code('', '
rootfsopt=nointegrity
')
Where to add before rw? after rw or rootwait? any help is welcome
thanks you!