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Subject: Re: [PATCH] Add prctl support for controlling mem reclaim V4
To:     Mike Christie <mchristi@redhat.com>, linux-api@vger.kernel.org,
        idryomov@gmail.com, mhocko@kernel.org, david@fromorbit.com,
        linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-block@vger.kernel.org, martin@urbackup.org,
        Damien.LeMoal@wdc.com
Cc:     Michal Hocko <mhocko@suse.com>,
        Masato Suzuki <masato.suzuki@wdc.com>
References: <20191112001900.9206-1-mchristi@redhat.com>
From:   Bart Van Assche <bvanassche@acm.org>
Message-ID: <24073284-ee53-d22d-dcef-277231283d75@acm.org>
Date:   Wed, 27 Nov 2019 10:07:45 -0800
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On 11/11/19 4:19 PM, Mike Christie wrote:
> There are several storage drivers like dm-multipath, iscsi, tcmu-runner,
> amd nbd that have userspace components that can run in the IO path. For
> example, iscsi and nbd's userspace deamons may need to recreate a socket
> and/or send IO on it, and dm-multipath's daemon multipathd may need to
> send SG IO or read/write IO to figure out the state of paths and re-set
> them up.

Reviewed-by: Bart Van Assche <bvanassche@acm.org>