tmpfs port

~Dion tenzero at
Sun Feb 8 18:38:04 PST 2009

Dennis Melentyev wrote:
Hi Dion,

2009/2/6 ~Dion <tenzero at>:
Hi Everyone,

I am interested in the tmpfs porting project. To determine
if it is a reasonable goal for me, I've been trying to do some reading on
the subject.
I was wondering if anyone had any recommendations on
readings, either related to other ports of tmpfs or the
structure of the dragonfly kernel.
I have the text books, Design & Implementation of 4.4 BSD
and Design & Implementation of FreeBSD (5.2).
I have also pulled down GSOC submissions relating to the
NetBSD port of tmpfs and the NetBSD Internals documentation.
I am curious as to how much the dragonfly kernel is
different from the freeBSD kernel with respect to things
like virtual memory and vfs.
As far as I know, both VM and VFS layers are seriously different from
FreeBSD. They should be much more consistent in DragonFly.
Also, my knowledge comes only after lurking at this mailing list, so I
can't tell you more details.
I suppose, you've already read articles at If not, it's definitely a
good choice to start with.
Good luck with your project

Thanks Dennis. I have been going through the developer docs.

If anyone can point to some good docs on DragonFly's Vm and 
VFS layers, I would really appreciate it.


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