linux-kernel - Re: computing drop-able caches

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Date:	Fri, 12 Feb 2016 10:06:34 -0800
From:	Dave Hansen <dave.hansen@...el.com>
To:	Daniel Walker <danielwa@...co.com>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, "Khalid Mughal (khalidm)" <khalidm@...co.com>,
	"xe-kernel@...ernal.cisco.com" <xe-kernel@...ernal.cisco.com>
Subject: Re: computing drop-able caches

On 01/28/2016 03:42 PM, Daniel Walker wrote:
> My colleague Khalid and I are working on a patch which will provide a
> /proc file to output the size of the drop-able page cache.
> One way to implement this is to use the current drop_caches /proc
> routine, but instead of actually droping the caches just add
> up the amount.

Code, please.