Messages in this thread | | | Date | Mon, 30 Sep 2013 17:46:38 +0200 | Subject | Re: [RFC] extending splice for copy offloading | From | Miklos Szeredi <> |
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On Mon, Sep 30, 2013 at 4:41 PM, Ric Wheeler <rwheeler@redhat.com> wrote: > The way the array based offload (and some software side reflink works) is > not a byte by byte copy. We cannot assume that a valid count can be returned > or that such a count would be an indication of a sequential segment of good > data. The whole thing would normally have to be reissued. > > To make that a true assumption, you would have to mandate that in each of > the specifications (and sw targets)...
You're missing my point.
- user issues SIZE_MAX splice request - fs issues *64M* (or whatever) request to offload - when that completes *fully* then we return 64M to userspace - if it completes partially, then we return an error to userspace
Again, wouldn't that work?
Thanks, Miklos
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