[Yaffs] what's the different between multi-version and singl…

As source code shows , many files have single and multi two different
version , i.e. yaffs_mtdif2_multi.c and yaffs_mtdif2_single.c ,
yportenv_multi.h and yportenv_single.h.

there functions look same.

So what’s the real different of the two different? And if don’t use yaffs
with OS,and I could comment these files?



Wish anyone’s help.





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Regards,

Ezio