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SubjectRe: [RFC PATCH] mm: silence soft lockups from unlock_page
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> On Jul 21, 2020, at 2:33 AM, Michal Hocko <mhocko@kernel.org> wrote:
>
> on a large ppc machine. The very likely cause is a suboptimal
> configuration when systed-udev spawns way too many workders to bring the
> system up.

This is strange. The problem description is missing quite a few important details. For example, what systems exactly are those? How many CPUs, memory and NUMA nodes were you talking about? Which kernel version was it reported? How many workers from systemd-udev was “misconfigured”?
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