On Fri, Jul 29, 2022 at 10:22:16AM +0100, Mel Gorman wrote: > There is some context missing because it's not clear what the full impact is > but it is definitly the case that writepage is ignored in some contexts for > common filesystems so lets assume that writepage from reclaim context always > failed as a worst case scenario. Certainly this type of change is something > linux-mm needs to be aware of because we've been blind-sided before. Between willy and Johannes pushing or it I was under the strong assumption that linux-mm knows of it.. > I don't think it would be incredibly damaging although there *might* be > issues with small systems or cgroups. Johannes specifically mentioned that cgroup writeback will never call into ->writepage anyway.
