Jes Sorensen wrote: >>>>>>"Nick" == Nick Piggin <nickpiggin@yahoo.com.au> writes: > > > Nick> Jes Sorensen wrote: > >>>+ vma->vm_flags |= (VM_IO | VM_LOCKED | VM_RESERVED | VM_PFNMAP); > > > Nick> VM_PFNMAP actually has a fairly specific meaning [unlike the > Nick> rest of them :)] so you should be careful with it. Actually if > Nick> you set vm_pgoff in the right way, then that should enable you > Nick> to do COWs on these areas if that is what you want. > > Yup, I went through that when I started using it. I think you guided > me through it :-) > > We don't want COW here as the access is backed by special behavior in > the memory controller. We only allow shared mappings for that reason. > No problem, I think you should just stop using the VM_PFNMAP flag then. [Linus should jump in here if I'm wrong ;)] -- SUSE Labs, Novell Inc. Send instant messages to your online friends http://au.messenger.yahoo.com - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.htmlReceived on Sat Mar 18 01:09:52 2006
This archive was generated by hypermail 2.1.8 : 2006-03-18 01:10:01 EST