Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > > > With the latest series we don't need PAGE_CLEANUP_PUT at all. > > > > We will when it comes to skbuffs. > > I'm a little doubtful of that. skbuff fragments will be and will have to be a mixture of allocated pages that need putting and pinned or non-ref'd and non-pinned zerocopy stuff. I have posted a patch that works for the limited amount of driverage that I use on my test machine. Think network filesystem messages where you have a mixture of protocol bits generated by the kernel and data provided by direct I/O being sent by zerocopy (libceph, for example). David
