On Sat, May 12, 2007 at 06:01:57PM +1000, David Chinner wrote: > 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... Hi Dave, Did you get time to write the above man page ? It will help to push further patches in time (eg. for FA_PREALLOCATE mode). The idea I had was to push the patch with bare minimum functionality (FA_ALLOCATE and FA_DEALLOCATE modes) and parallely finalize on other new mode(s) based on the man page you planned to provide. Thanks! -- Regards, Amit Arora > > Cheers, > > Dave. > -- > Dave Chinner > Principal Engineer > SGI Australian Software Group - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
