On Thu, Feb 1, 2024 at 7:50 AM Chengming Zhou <zhouchengming@xxxxxxxxxxxxx> wrote: > > Add more comments in shrink_memcg_cb() to describe the deref dance > which is implemented to fix race problem between lru writeback and > swapoff, and the reason why we rotate the entry at the beginning. > > Also fix the stale comments in zswap_writeback_entry(), and add > more comments to state that we only deref the tree after we get > the swapcache reference. > > Suggested-by: Yosry Ahmed <yosryahmed@xxxxxxxxxx> > Suggested-by: Johannes Weiner <hannes@xxxxxxxxxxx> > Signed-off-by: Chengming Zhou <zhouchengming@xxxxxxxxxxxxx> > --- Reviewed-by: Nhat Pham <nphamcs@xxxxxxxxx>
