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docs: cgroup: Note about sibling relative reclaim protection

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Signed-off-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Michal Koutný 2025-11-14 19:21:26 +01:00 committed by Tejun Heo
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Documentation/admin-guide/cgroup-v2.rst
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@ -1952,6 +1952,10 @@ When the reclaim targets ancestors of A, the effective protection of B is
capped by the protection value configured for A (and any other intermediate
ancestors between A and the target).
To express indifference about relative sibling protection, it is suggested to
use memory_recursiveprot. Configuring all descendants of a parent with finite
protection to "max" works but it may unnecessarily skew memory.events:low
field.
Memory Ownership
~~~~~~~~~~~~~~~~