On Fri, May 11, 2007 at 04:33:01PM +0530, Suparna Bhattacharya wrote:
> On Fri, May 11, 2007 at 08:39:50AM +1000, David Chinner wrote:
> > All I'm really interested in right now is that the fallocate
> > _interface_ can be used as a *complete replacement* for the
> > pre-existing XFS-specific ioctls that are already used by
> > applications. What ext4 can or can't do right now is irrelevant to
> > this discussion - the interface definition needs to take priority
> > over implementation....
>
> Would you like to write up an interface definition description (likely
> man page) and post it for review, possibly with a mention of apps using
> it today ?
Yeah, I started doing that yesterday as i figured it was the only way
to cut the discussion short....
> One reason for introducing the mode parameter was to allow the interface to
> evolve incrementally as more options / semantic questions are proposed, so
> that we don't have to make all the decisions right now.
> So it would be good to start with a *minimal* definition, even just one mode.
> The rest could follow as subsequent patches, each being reviewed and debated
> separately. Otherwise this discussion can drag on for a long time.
Minimal definition to replace what applicaitons use on XFS and to
support poasix_fallocate are the thre that have been mentioned so
far (FA_ALLOCATE, FA_PREALLOCATE, FA_DEALLOCATE). I'll document them
all in a man page...
Cheers,
Dave.
--
Dave Chinner
Principal Engineer
SGI Australian Software Group
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