linux-kernel - [RFC][PATCH 1/2] Add explanation about min_free

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Message-ID: <65795E11DBF1E645A09CEC7EAEE94B9C3A30A297@USINDEVS02.corp.hds.com>
Date:	Fri, 7 Jan 2011 17:04:58 -0500
From:	Satoru Moriya <satoru.moriya@....com>
To:	"linux-mm@...ck.org" <linux-mm@...ck.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"mel@....ul.ie" <mel@....ul.ie>,
	"kosaki.motohiro@...fujitsu.com" <kosaki.motohiro@...fujitsu.com>,
	"rdunlap@...otime.net" <rdunlap@...otime.net>,
	"dle-develop@...ts.sourceforge.net" 
	<dle-develop@...ts.sourceforge.net>,
	Seiji Aguchi <seiji.aguchi@....com>
Subject: [RFC][PATCH 1/2] Add explanation about min_free_kbytes to clarify
 its effect

Document that changing min_free_kbytes affects not only watermark[min]
but also watermark[low,high].

Signed-off-by: Satoru Moriya <satoru.moriya@....com>
---
 Documentation/sysctl/vm.txt |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt
index 30289fa..e10b279 100644
--- a/Documentation/sysctl/vm.txt
+++ b/Documentation/sysctl/vm.txt
@@ -349,7 +349,8 @@ min_free_kbytes:
 
 This is used to force the Linux VM to keep a minimum number
 of kilobytes free.  The VM uses this number to compute a
-watermark[WMARK_MIN] value for each lowmem zone in the system.
+watermark[WMARK_MIN] for each lowmem zone and
+watermark[WMARK_LOW/WMARK_HIGH] for each zone in the system.
 Each lowmem zone gets a number of reserved free pages based
 proportionally on its size.
 
-- 
1.7.1

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