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On Aug 8, 2004, at 4:14 AM, Hubert Feyrer wrote:

> Maybe have a look at LFS, which runs it's cleaner daemon in userspace.
> IIRC LFS is described in "Design and Implementation of the 4.4BSD
> Operating System", there a re probably a number of other ressources 
> for it
> too. According to the lfs_cleanerd(8) manpage, there are a bunch of
> lfs_*(8) system calls that assist in the venture.

The LFS model is really inappropriate for this case.  The only thing 
the kernel ever tells the cleaner to do is "wake up", so there is no 
communication channel for kernel -> cleaner.  Also, those LFS system 
calls don't really communicate much to the kernel ... just low-level 
segment handling stuff, really.

Besides, I always thought having all of those system calls for LFS was 
kind of ugly.

         -- Jason R. Thorpe <thorpej@wasabisystems.com>


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