Re: [PATCH RFC 00/14] Yet Another In-band(online) deduplication implement

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On Mon, Aug 03, 2015 at 03:18:55PM +0800, Qu Wenruo wrote:
> >> Implement details includes the following:
> >> 1) LRU hash maps to limit the memory usage
> >>     The hash -> extent mapping is control by LRU (or unlimited), to
> >>     get a controllable memory usage (can be tuned by mount option)
> >>     alone with controllable read/write overhead used for hash searching.
> >
> > In Liu Bo's series, I rejected the mount options as an interface and
> > will do that here as well. His patches added a dedup ioctl to (at least)
> > enable/disable the dedup.
> BTW, would you please give me some reason why that's not a good idea to 
> use mount option to trigger/change dedup options?

That's the wrong interface to use for such actions.
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