Re: [Gnu-arch-users] Re: readdir() optimization for ext3/Linux 2.6

[Florian Weimer]

Ollivier Robert wrote:

> According to Momchil Velikov:
> > Ollivier> I'd be against (and I think Tom too) putting any kind of
> > Ollivier> FS-specific optimisations in Arch.
> > 
> > Why ?
> 
> Because portability is difficult enough without putting FS-specific kludges
> (which are less portable than OS specific ones) in the code.

The required changes can be neatly isolated.  Portability headaches are
caused by different problems.

> > How is this relevant to ext2 ? Does such ordering hurt FFS ?
> 
> Completely irrelevant to ext2 :)  I don't think it is bad for FFS, I just
> say, it is the OS business, not Arch's.

It's quite hard to fix this while preserving kernel interfaces and not
penalizing some applications.