In some cases, fsck.f2fs takes very long time > 90s, how to improve ?

[rockcarry]

Test condition:
Allwinner A133 Android 10 tablet.

• Data partition is formated to f2fs.
• fsck enabled during android boot
• 32GB emmc flash, and data partition size is 28GB+

Steps to reproduce:

1. create 20GB file on data partition:
   belsito:/data # dd if=/dev/urandom of=/data/test.bin bs=1k count=20m 20971520+0 records in 20971520+0 records out 21474836480 bytes (20 G) copied, 679.607325 s, 30 M/s
2. create 500MB file on data partition:
   dd if=/dev/urandom of=/data/test2.bin bs=1k count=500k
   don't wait this command finish, open another adb shell, type command:
   reboot # this makes device reboot
3. after reboot fsck.f2fs found data corruption, and took very long time >90s to finish check:

[rockcarry]

Is any way to improve to reduce the check time ?