Is there any easy way to defragment on F2FS?

[jonggyup]

It seems like the current defragmentation of F2FS relies on defrag.f2fs.
But the required parameters are the actual block addresses, which is not convenient.
(Also, I don't know how to get free block addresses for the target block addresses)
As far as I remember, F2FS used to provide a defragmentation tool that rewrites a whole file into a new area.
But, I can't find it anymore.

Is there any easy way to defragment?
How do people usually defragment their files on F2FS?

[Mausy5043]

I'm sure there will NOT be any benefit for defragmentation on solid-state type storage media.
The defragmentation consumes write-cycles which reduces the potential lifetime of the device.
Also, seek- and read-times won't be affected.

Sources:
this question on superuser.com and the more authorative Crucial. There are many others.