initramfs generators rely on "pre" softdeps (and "depends") to include additional required modules.
f2fs does not declare "pre: crc32" softdep. Then every generator (dracut, mkinitcpio...) has to maintain a hardcoded list for this purpose.
Hence please use MODULE_SOFTDEP("pre: crc32") in f2fs code.
Was fixed with below commit, so close this issue.
*** Bug 187471 has been marked as a duplicate of this bug. ***