The quilt patch titled
Subject: Documentation/cgroup-v2: clarify that zswap.writeback is ignored if zswap is disabled
has been removed from the -mm tree. Its filename was
documentation-cgroup-v2-clarify-that-zswapwriteback-is-ignored-if-zswap-is-disabled.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Mike Yuan <me@xxxxxxxxxxx>
Subject: Documentation/cgroup-v2: clarify that zswap.writeback is ignored if zswap is disabled
Date: Fri, 23 Aug 2024 16:27:11 +0000
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/
[akpm@xxxxxxxxxxxxxxxxxxxx: fix/simplify text]
Link: https://lkml.kernel.org/r/20240823162506.12117-3-me@xxxxxxxxxxx
Signed-off-by: Mike Yuan <me@xxxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Michal Koutný <mkoutny@xxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Nhat Pham <nphamcs@xxxxxxxxx>
Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Cc: Shakeel Butt <shakeel.butt@xxxxxxxxx>
Cc: Yosry Ahmed <yosryahmed@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/admin-guide/cgroup-v2.rst | 2 ++
1 file changed, 2 insertions(+)
--- a/Documentation/admin-guide/cgroup-v2.rst~documentation-cgroup-v2-clarify-that-zswapwriteback-is-ignored-if-zswap-is-disabled
+++ a/Documentation/admin-guide/cgroup-v2.rst
@@ -1755,6 +1755,8 @@ 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
+ is allowed unless memory.swap.max is set to 0.
memory.pressure
A read-only nested-keyed file.
_
Patches currently in -mm which might be from me@xxxxxxxxxxx are
