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Date:   Fri, 11 Jan 2019 07:25:56 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Suren Baghdasaryan <surenb@google.com>
Cc:     tj@kernel.org, lizefan@huawei.com, hannes@cmpxchg.org,
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        kernel-team@android.com
Subject: Re: [PATCH v2 1/5] fs: kernfs: add poll file operation
Message-ID: <20190111062556.GA348@kroah.com>
References: <20190110220718.261134-1-surenb@google.com>
 <20190110220718.261134-2-surenb@google.com>
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On Thu, Jan 10, 2019 at 02:07:14PM -0800, Suren Baghdasaryan wrote:
> From: Johannes Weiner <hannes@cmpxchg.org>
> 
> Kernfs has a standardized poll/notification mechanism for waking all
> pollers on all fds when a filesystem node changes. To allow polling
> for custom events, add a .poll callback that can override the default.
> 
> This is in preparation for pollable cgroup pressure files which have
> per-fd trigger configurations.
> 
> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
> Signed-off-by: Suren Baghdasaryan <surenb@google.com>

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>