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-rw-r--r--Documentation/admin-guide/cgroup-v2.rst5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
index e34d3c9..8a2c52d 100644
--- a/Documentation/admin-guide/cgroup-v2.rst
+++ b/Documentation/admin-guide/cgroup-v2.rst
@@ -1245,6 +1245,11 @@ PAGE_SIZE multiple when read back.
because of running out of swap system-wide or max
limit.
+ When reduced under the current usage, the existing swap
+ entries are reclaimed gradually and the swap usage may stay
+ higher than the limit for an extended period of time. This
+ reduces the impact on the workload and memory management.
+
Usage Guidelines
~~~~~~~~~~~~~~~~
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