linux-kernel - Re: [PATCH resend] drop_caches: add some documentation and info message

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Message-Id: <20130730073956.3047e3c7.akpm@linux-foundation.org>
Date:	Tue, 30 Jul 2013 07:39:56 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	dave.hansen@...el.com, kosaki.motohiro@...fujitsu.com,
	kamezawa.hiroyu@...fujitsu.com, bp@...e.de,
	Dave Hansen <dave@...ux.vnet.ibm.com>
Subject: Re: [PATCH resend] drop_caches: add some documentation and info
 message

On Tue, 30 Jul 2013 14:55:25 +0200 Michal Hocko <mhocko@...e.cz> wrote:

> > > I am OK with that  but can we use a top bit instead. Maybe we never have
> > > other entities to drop in the future but it would be better to have a room for them
> > > just in case.
> > 
> > If we add another flag in the future it can use bit 3?
> 
> What if we get crazy and need more of them?

Then we use bit 4.  Then 5.  Then 6.

I'm really not understanding your point here ;)
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