On Thu, May 23, 2019 at 04:10:38PM -0300, Jason Gunthorpe wrote: > > On Thu, May 23, 2019 at 02:24:58PM -0400, Jerome Glisse wrote: > > I can not take mmap_sem in range_register, the READ_ONCE is fine and > > they are no race as we do take a reference on the hmm struct thus > > Of course there are use after free races with a READ_ONCE scheme, I > shouldn't have to explain this. > > If you cannot take the read mmap sem (why not?), then please use my > version and push the update to the driver through -mm.. I think it would really help if we queue up these changes in a git tree that can be pulled into the driver trees. Given that you've been doing so much work to actually make it usable I'd nominate rdma for the "lead" tree.
