Hi, Suren, On Wed, Apr 21, 2021 at 01:01:34PM -0700, Suren Baghdasaryan wrote: > Peter, you mentioned https://lkml.org/lkml/2020/8/10/439 patch to > distinguish real writes vs enforced COW read requests, however I also > see that you had a later version of this patch here: > https://lore.kernel.org/patchwork/patch/1286506/. Which one should I > backport? Or is it not needed in the absence of uffd-wp support in the > earlier kernels? Sorry I have no ability to evaluate the rest... but according to Linus's previous reply, my understanding is that it is not needed, not to mention it's not upstreamed too. Thanks, -- Peter Xu