Re: [PATCH 1/3] copyfile: generic_sendpage

[Jan Blunck]

Christoph Hellwig wrote:
> > > Could you give some context please?
>
>
> Oh, I know what union mounts are.  But I wonder who's hacking on them
> as they need some major VFS surgey to get right.

Ok, first sorry for the late reply. I'm working on a vfs-based 
union-mount implementation for linux. The focus is on the basic 
functionality explained by McKusick [1] without a need for a new 
separate filesystem, without options like "before". "after", "in 
between" or something like that, with permanent whiteouts if the fstype 
supports them. For the copyup I plan to use Jörn's patch.
At the moment some basic stuff (actually the unions) is working, so you 
actually can "see" something but I don't think that the patches are 
ready for being posted now. Please relax and wait a few weeks because I 
have to go back to university for some final exams. After that I'm back 
for some more full-time hacking on union-mounts.

[1]:http://www.usenix.org/publications/library/proceedings/neworl/full_papers/mckusick.a

Regards,
Jan
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