On Wed, 7 Feb 2001, Peter Wemm wrote:

> Alfred Perlstein wrote:
> > Does this mean that 'FFS' isn't optional anymore?  I mean it probably
> > hasn't been (or never was) but the intention was that to build 4.4BSD
> > you needed _either_ UFS or INET, but you could ditch either one and
> > still build a kernel.
> No, FFS_ROOT was unused.  We have a generic mountroot mechanism, so we no
> longer needed to compile the "special" FFS-specific version of the code
> into autoconf.c.  FFS is still optional.  For i386 FFS_ROOT and CD9660_ROOT
> did nothing, and on alpha/ia64 it did something that was more likely to
> cause problems than help.

Except the optionality of FFS is broken.  Leaving it out gives:

    ufs_lookup.o: In function `ufs_dirremove':
    ufs_lookup.o(.text+0x125e): undefined reference to `ffs_snapgone'
    ufs_lookup.o: In function `ufs_dirrewrite':
    ufs_lookup.o(.text+0x1349): undefined reference to `ffs_snapgone'

ffs_snapgone is in an optional file but is referenced in a standard file.


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