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Date: Mon, 26 Jul 2021 13:14:12 -1000 From: Tejun Heo <tj@...nel.org> To: Waiman Long <longman@...hat.com> Cc: Zefan Li <lizefan.x@...edance.com>, Johannes Weiner <hannes@...xchg.org>, Jonathan Corbet <corbet@....net>, Shuah Khan <shuah@...nel.org>, cgroups@...r.kernel.org, linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org, linux-kselftest@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>, Roman Gushchin <guro@...com>, Phil Auld <pauld@...hat.com>, Peter Zijlstra <peterz@...radead.org>, Juri Lelli <juri.lelli@...hat.com>, Frederic Weisbecker <frederic@...nel.org>, Marcelo Tosatti <mtosatti@...hat.com>, Michal Koutný <mkoutny@...e.com> Subject: Re: [PATCH v3 4/9] cgroup/cpuset: Enable event notification when partition become invalid On Tue, Jul 20, 2021 at 10:18:29AM -0400, Waiman Long wrote: > +static inline void notify_partition_change(struct cpuset *cs, > + int old_prs, int new_prs) > +{ > + if ((old_prs == new_prs) || > + ((old_prs != PRS_ERROR) && (new_prs != PRS_ERROR))) > + return; > + cgroup_file_notify(&cs->partition_file); I'd generate an event on any state changes. The user have to read the file to find out what happened anyway. Thanks. -- tejun
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