> As discussed in [1], zswap-related settings natually > lose their effect when zswap is disabled, specifically > zswap.writeback here. Be explicit about this behavior. > > [1] > https://lore.kernel.org/linux-kernel/CAKEwX=Mhbwhh-=xxCU-RjMXS_n=RpV3Gtznb2m_3JgL+jzz++g@xxxxxxxxxxxxxx/ > > Cc: Nhat Pham <nphamcs@xxxxxxxxx> > Cc: Yosry Ahmed <yosryahmed@xxxxxxxxxx> > > Signed-off-by: Mike Yuan <me@xxxxxxxxxxx> > --- > Documentation/admin-guide/cgroup-v2.rst | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/Documentation/admin-guide/cgroup-v2.rst > b/Documentation/admin-guide/cgroup-v2.rst > index 95c18bc17083..a1723e402596 100644 > --- a/Documentation/admin-guide/cgroup-v2.rst > +++ b/Documentation/admin-guide/cgroup-v2.rst > @@ -1731,6 +1731,8 @@ The following nested keys are defined. > > Note that this is subtly different from setting > memory.swap.max to > 0, as it still allows for pages to be written to the zswap > pool. > + This setting has no effect if zswap is disabled, and > swapping > + would be allowed unless memory.swap.max is set to 0. > > memory.pressure > A read-only nested-keyed file. Hmm, Andrew, it seems that the commit messages of this and the previous patch are somehow reversed/mismatched? [1][2] Could you please confirm and fix it? [1]: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?h=mm-unstable&id=eef275964326760bb55803b167854981cab97e55 [2]: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?h=mm-unstable&id=42c3628a37400c2bc4199b9f8423be701646d4e0
