On Mon, Mar 15, 2021 at 9:20 PM Arjun Roy <arjunroy@xxxxxxxxxx> wrote: > [...] > > > > Apologies for the spam - looks like I forgot to rebase the first time > I sent this out. > > Actually, on a related note, it's not 100% clear to me whether this > patch (which in its current form, applies to net-next) should instead > be based on the mm branch - but the most recent (clean) checkout of mm > fails to build for me so net-next for now. > It is due to "mm: page-writeback: simplify memcg handling in test_clear_page_writeback()" patch in the mm tree. You would need to reintroduce the lock_page_memcg() which returns the memcg and make __unlock_page_memcg() non-static.