On 24 Apr 2023 09:56:58 -0700 Douglas Anderson <dianders@xxxxxxxxxxxx> > On Fri, Apr 21, 2023 at 10:19=E2=80=AFPM Hillf Danton <hdanton@xxxxxxxx> wrote: > > If kcompactd is waken > > up by kswapd, waiting for slow IO is the right thing to do. > > I don't have enough intuition here, so I'm happy to take others' > advice here. I guess my thought was that kcompactd is explicitly not > using the full "sync" and instead choosing the "sync light". To me > that means we shouldn't block for _too_ long. Take a look at another case of lock wait [1]. [1] https://lore.kernel.org/lkml/CAHk-=wgyL9OujQ72er7oXt_VsMeno4bMKCTydBT1WSaagZ_5CA@xxxxxxxxxxxxxx/
