On Mon, Oct 10, 2011 at 03:05:10PM +0200, Paolo Bonzini wrote: > > That is too tricky: a new kernel version might show differnt > > behaviour. Imho we should specify a limit or make it configurable or > > put it in the protocol. We have 124 bytes of handshake left, we can > > use 8 of them for a maximum blocksize. > > O_DIRECT bypasses everything clever that the kernel might do.
More to the point, O_DIRECT is _defined_ as "don't try to be clever about this request, just do it". If a new kernel version were to show different behaviour, that would be a bug in the kernel. -- The volume of a pizza of thickness a and radius z can be described by the following formula: pi zz a ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 _______________________________________________ Nbd-general mailing list Nbd-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nbd-general
