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Date:   Sat, 7 Aug 2021 15:14:24 +0900
From:   Alexey Avramov <hakavlad@inbox.lv>
To:     Nico Pache <npache@redhat.com>
Cc:     linux-mm@kvack.org, akpm@linux-foundation.org,
        linux-kernel@vger.kernel.org, hannes@cmpxchg.org,
        aquini@redhat.com, shakeelb@google.com, llong@redhat.com
Subject: Re: [PATCH v2] vm_swappiness=0 should still try to avoid swapping
 anon memory
Message-ID: <20210807151424.76b4ee3a@mail.inbox.lv>
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>vm_swappiness=0 should still try to avoid swapping anon memory

Swapping with swappiness=0 depends on vm.watermark_scale_factor.
Decrease vm.watermark_scale_factor to avoid swapping and get OOM,
and increase vm.watermark_scale_factor to get successful swapping 
even with swappiness=0.

Maybe I misunderstood you and you are solving some new problem?