linux-kernel - Re: [PATCH] mm/swap: add function get_total_swap_pages to expose total_swap

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Message-ID: <20180201081520.GF21609@dhcp22.suse.cz>
Date:   Thu, 1 Feb 2018 09:15:20 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     "He, Roger" <Hongbo.He@....com>
Cc:     "Koenig, Christian" <Christian.Koenig@....com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH] mm/swap: add function get_total_swap_pages to expose
 total_swap_pages

On Thu 01-02-18 06:13:20, He, Roger wrote:
> Hi Michal:
> 
> How about only  
> EXPORT_SYMBOL_GPL(total_swap_pages) ?

I've already expressed that messing up with the amount of swap pages is
a wrong approach. You should scale your additional buffers according the
the current memory pressure. There are other users of memory on the
system other than your subsystem.
-- 
Michal Hocko
SUSE Labs