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From: Rik van Riel <riel@redhat.com>
To: leonid.moiseichuk@nokia.com
Cc: penberg@kernel.org, minchan@kernel.org, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org, kamezawa.hiroyu@jp.fujitsu.com,
	mel@csn.ul.ie, rientjes@google.com, kosaki.motohiro@gmail.com,
	hannes@cmpxchg.org, mtosatti@redhat.com,
	akpm@linux-foundation.org, rhod@redhat.com,
	kosaki.motohiro@jp.fujitsu.com
Subject: Re: [RFC 1/3] /dev/low_mem_notify
Date: Wed, 18 Jan 2012 09:30:52 -0500	[thread overview]
Message-ID: <4F16D79C.2020402@redhat.com> (raw)
In-Reply-To: <84FF21A720B0874AA94B46D76DB98269045596AE@008-AM1MPN1-003.mgdnok.nokia.com>

On 01/18/2012 04:06 AM, leonid.moiseichuk@nokia.com wrote:

> Would be possible to use for threshold pointed value(s) e.g. according to enum zone_state_item, because kinds of memory to track could be different?
> E.g. to tracking paging activity NR_ACTIVE_ANON and NR_ACTIVE_FILE could be interesting, not only free.

That seems like a horrible idea, because there is no guarantee that
the kernel will continue to use NR_ACTIVE_ANON and NR_ACTIVE_FILE
internally in the future.

What is exported to userspace must be somewhat independent of the
specifics of how the kernel implements things internally.

-- 
All rights reversed

  parent reply	other threads:[~2012-01-18 14:31 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-17  8:13 [RFC 0/3] low memory notify Minchan Kim
2012-01-17  8:13 ` [RFC 1/3] /dev/low_mem_notify Minchan Kim
2012-01-17  9:27   ` Pekka Enberg
2012-01-17 16:35     ` Rik van Riel
2012-01-17 18:51       ` Pekka Enberg
2012-01-17 19:30         ` Rik van Riel
2012-01-17 19:49           ` Pekka Enberg
2012-01-17 19:54             ` Pekka Enberg
2012-01-17 19:57             ` Pekka Enberg
2012-01-17 23:20         ` Minchan Kim
2012-01-18  7:16           ` Pekka Enberg
2012-01-18  7:49             ` Minchan Kim
2012-01-18  9:06         ` leonid.moiseichuk
2012-01-18  9:15           ` Pekka Enberg
2012-01-18  9:41             ` leonid.moiseichuk
2012-01-18 10:40               ` Pekka Enberg
2012-01-18 10:44                 ` leonid.moiseichuk
2012-01-18 23:34                   ` Ronen Hod
2012-01-19  7:25                     ` Pekka Enberg
2012-01-19  9:05                       ` Ronen Hod
2012-01-19  9:10                         ` Pekka Enberg
2012-01-19  9:20                           ` Ronen Hod
2012-01-19 10:53                             ` leonid.moiseichuk
2012-01-19 11:07                               ` Pekka Enberg
2012-01-19 11:54                                 ` leonid.moiseichuk
2012-01-19 11:59                                   ` Pekka Enberg
2012-01-19 12:06                                   ` Pekka Enberg
2012-01-24 15:38                               ` Marcelo Tosatti
2012-01-24 16:08                                 ` Ronen Hod
2012-01-24 18:10                                   ` Marcelo Tosatti
2012-01-25  8:52                                     ` Ronen Hod
2012-01-25 10:12                                       ` Marcelo Tosatti
2012-01-25 10:48                                         ` Ronen Hod
2012-01-26 16:17                                           ` Marcelo Tosatti
2012-01-24 16:10                                 ` Pekka Enberg
2012-01-24 18:29                                   ` Marcelo Tosatti
2012-01-25  8:19                                   ` leonid.moiseichuk
2012-01-19  7:34                   ` Pekka Enberg
2012-01-24 16:22             ` Arnd Bergmann
2012-01-18 14:30           ` Rik van Riel [this message]
2012-01-18 15:29             ` Pekka Enberg
2012-01-24 15:40         ` Marcelo Tosatti
2012-01-24 16:01           ` Pekka Enberg
2012-01-24 16:25             ` Arnd Bergmann
2012-01-24 18:32               ` Marcelo Tosatti
2012-01-24 21:57         ` Jonathan Corbet
2012-01-17  9:45   ` Pekka Enberg
2012-01-17  8:13 ` [RFC 2/3] vmscan hook Minchan Kim
2012-01-17  8:39   ` KAMEZAWA Hiroyuki
2012-01-17  9:13     ` Minchan Kim
2012-01-17 10:05       ` KAMEZAWA Hiroyuki
2012-01-17 23:08         ` Minchan Kim
2012-01-18  0:18           ` KAMEZAWA Hiroyuki
2012-01-18 14:17             ` Rik van Riel
2012-01-19  2:25               ` KAMEZAWA Hiroyuki
2012-01-19 14:42                 ` Rik van Riel
2012-01-20  0:24                   ` KAMEZAWA Hiroyuki
2012-01-17  8:13 ` [RFC 3/3] test program Minchan Kim
2012-01-17 14:38 ` [RFC 0/3] low memory notify Colin Walters
2012-01-17 15:04   ` Pekka Enberg
2012-01-17 16:44   ` Rik van Riel
2012-01-17 17:16 ` Olof Johansson

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