From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 24 Jan 2008 13:18:01 +0900 From: KOSAKI Motohiro Subject: [RFC][PATCH 0/8] mem_notify v5 Message-Id: <20080124130348.1760.KOSAKI.MOTOHIRO@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: kosaki.motohiro@jp.fujitsu.com, Marcelo Tosatti , Daniel Spang , Rik van Riel , Andrew Morton , Alan Cox List-ID: Hi The /dev/mem_notify is low memory notification device. it can avoid swappness and oom by cooperationg with the user process. You need not be annoyed by OOM any longer :) please any comments! patch list [1/8] introduce poll_wait_exclusive() new API [2/8] introduce wake_up_locked_nr() new API [3/8] introduce /dev/mem_notify new device (the core of this patch series) [4/8] memory_pressure_notify() caller [5/8] add new mem_notify field to /proc/zoneinfo [6/8] (optional) fixed incorrect shrink_zone [7/8] ignore very small zone for prevent incorrect low mem notify. [8/8] support fasync feature related discussion: -------------------------------------------------------------- LKML OOM notifications requirement discussion http://www.gossamer-threads.com/lists/linux/kernel/832802?nohighlight=1#832802 OOM notifications patch [Marcelo Tosatti] http://marc.info/?l=linux-kernel&m=119273914027743&w=2 mem notifications v3 [Marcelo Tosatti] http://marc.info/?l=linux-mm&m=119852828327044&w=2 Thrashing notification patch [Daniel Spang] http://marc.info/?l=linux-mm&m=119427416315676&w=2 mem notification v4 [kosaki] http://marc.info/?l=linux-mm&m=120035840523718&w=2 Changelog ------------------------------------------------- v4 -> v5 (by KOSAKI Motohiro) o rebase to 2.6.24-rc8-mm1 o change display order of /proc/zoneinfo o ignore very small zone o support fcntl(F_SETFL, FASYNC) o fix some trivial bugs. v3 -> v4 (by KOSAKI Motohiro) o rebase to 2.6.24-rc6-mm1 o avoid wake up all. o add judgement point to __free_one_page(). o add zone awareness. v2 -> v3 (by Marcelo Tosatti) o changes the notification point to happen whenever the VM moves an anonymous page to the inactive list. o implement notification rate limit. v1(oom notify) -> v2 (by Marcelo Tosatti) o name change o notify timing change from just swap thrashing to just before thrashing. o also works with swapless device. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org