On Mon, Jun 24, 2019 at 11:08:39AM -0400, Theodore Ts'o wrote: > Per my comments in another e-mail thread, given how many of the > primary file systems support cgroup-aware writeback, maybe we should > just remove the _supported_fs line and move this test to generic? > > Whether we like it or not, there are more and more userspace tools > which assume that cgroup-aware writeback is a thing. > > Alternatively, maybe we should have some standardized way so the > kernel can signal whether or not a particular mounted file system > supports cgroup-aware writeback? I'm fine with moving the patch to generic as said. I'm fine saying we assume cgroup wb support for block device based file systems, xfs was the only major one missing, and the support is pretty trivial as well.