On Fri, Aug 05, 2011 at 02:12:48PM +0100, Daniel P. Berrange wrote: > > Because you cannot change O_DIRECT on an open fd :(. This is why > > we're going through this pain. > > Hmm, I remember hearing that before, but looking at the current fcntl() > manpage, it claims you *can* change O_DIRECT using SET_FL. Perhaps this > is a newish feature, but it'd be nicer to use it if possible ?
It's been there since day 1 of O_DIRECT support.
