From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 15 Jan 2008 11:10:35 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [RFC][PATCH 3/5] add /dev/mem_notify device Message-Id: <20080115111035.d516639a.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20080115100029.1178.KOSAKI.MOTOHIRO@jp.fujitsu.com> References: <20080115092828.116F.KOSAKI.MOTOHIRO@jp.fujitsu.com> <20080115100029.1178.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: KOSAKI Motohiro Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Marcelo Tosatti , Daniel Spang , Rik van Riel , Andrew Morton List-ID: On Tue, 15 Jan 2008 10:01:21 +0900 KOSAKI Motohiro wrote: > + if (pressure) { > + nr_wakeup = max_t(int, atomic_read(&nr_watcher_task)>>4, 100); > + atomic_long_set(&last_mem_notify, jiffies); > + wake_up_locked_nr(&mem_wait, nr_wakeup); > + } What is this for ? and Why ? Are there too many waiters ? Thanks -Kame -- 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