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SubjectRe: [-mm patch] unexport sys_{open,read}
> I would like to see "everyone" explain what we lose by giving developers a
> bit of warning before we break their stuff.

We lose the ability to get anything done on a timescale that makes it
happen. Instead we have this continual cycle of remove, akpm says no,
submitter forgets, 3 month pause, remove, akpm says no, ...

Adrian does now and then try and remove stuff its stupid to remove.
People NAK those quite promptly. We've been trying to deprecate sys_open
and the other related exports since 1.3.x or thereabouts.

There is almost no correct sane way to use these exports either, because
your fs struct may be shared so horrible things happen.

I'm (minus the language selection) with Christoph "Effing" Hellwig on this
one - for these symbols at least. When we break stuff people moan and we
can put them back, providing they go into the Linus tree fairly early in
the -rc sequence. In the cases we've inadvertently broken stuff before
people have moaned fairly quickly too - eg when the tty layer took some
inlines into _GPL exports by accident.

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