linux-kernel - Re: [PATCH] kernel: sysctl: make drop

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Message-ID: <20191101105858.GA690103@chrisdown.name>
Date:   Fri, 1 Nov 2019 10:58:58 +0000
From:   Chris Down <chris@...isdown.name>
To:     Johannes Weiner <hannes@...xchg.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, kernel-team@...com
Subject: Re: [PATCH] kernel: sysctl: make drop_caches write-only

Johannes Weiner writes:
>Currently, the drop_caches proc file and sysctl read back the last
>value written, suggesting this is somehow a stateful setting instead
>of a one-time command. Make it write-only, like e.g. compact_memory.
>
>Signed-off-by: Johannes Weiner <hannes@...xchg.org>

Since we already have the kmsg notifier when it's used, this seems reasonable 
to me.

Acked-by: Chris Down <chris@...isdown.name>