Re: New feature Idea

With that in said, maintaining all the machinery for dedup is definitely
non-trivial, and I haven't yet convinced myself it wouldn't be better
done at higher layers.  We already have the cow-single-file ioctl, why
not have a userland process go around and create cow links between
identical files.

Can verification + cow-single-file be done atomically with the existing
ioctl? Pushing this out into userspace seems reasonable enough, but not if
it gives a malicious user a window where they can alter part of their file
and have it CoW'd into everyone else's copy.

Is this a 1.0 feature?