More research...
Found out that FreeNAS is not directly built from FreeBSD. FreeNAS is built from TrueOS, which is a version of FreeBSD used by the PC-BSD project (www.pcbsd.org ) .
According to a post I found, TrueOS is "FreeBSD with hugs" [ http://forums.freenas.org/index.php...freenas-distributions.15388/page-3#post-82483 ]. I think this means that TrueOS incorporates updates/patches that may not yet be in FreeBSD RELEASE or STABLE.
So the TrueOS link is most likely the reason why FreeNAS includes ZFS code that I can't find in FreeBSD RELEASE.
Found out that FreeNAS is not directly built from FreeBSD. FreeNAS is built from TrueOS, which is a version of FreeBSD used by the PC-BSD project (www.pcbsd.org ) .
According to a post I found, TrueOS is "FreeBSD with hugs" [ http://forums.freenas.org/index.php...freenas-distributions.15388/page-3#post-82483 ]. I think this means that TrueOS incorporates updates/patches that may not yet be in FreeBSD RELEASE or STABLE.
So the TrueOS link is most likely the reason why FreeNAS includes ZFS code that I can't find in FreeBSD RELEASE.