From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx203.postini.com [74.125.245.203]) by kanga.kvack.org (Postfix) with SMTP id E03906B004F for ; Thu, 19 Jan 2012 02:25:18 -0500 (EST) Received: by lagw12 with SMTP id w12so2159294lag.14 for ; Wed, 18 Jan 2012 23:25:16 -0800 (PST) Date: Thu, 19 Jan 2012 09:25:03 +0200 (EET) From: Pekka Enberg Subject: Re: [RFC 1/3] /dev/low_mem_notify In-Reply-To: <4F175706.8000808@redhat.com> Message-ID: References: <1326788038-29141-1-git-send-email-minchan@kernel.org> <1326788038-29141-2-git-send-email-minchan@kernel.org> <4F15A34F.40808@redhat.com> <84FF21A720B0874AA94B46D76DB98269045596AE@008-AM1MPN1-003.mgdnok.nokia.com> <84FF21A720B0874AA94B46D76DB98269045596EA@008-AM1MPN1-003.mgdnok.nokia.com> <84FF21A720B0874AA94B46D76DB982690455978C@008-AM1MPN1-003.mgdnok.nokia.com> <4F175706.8000808@redhat.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: owner-linux-mm@kvack.org List-ID: To: Ronen Hod Cc: leonid.moiseichuk@nokia.com, riel@redhat.com, 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, kosaki.motohiro@jp.fujitsu.com On Thu, 19 Jan 2012, Ronen Hod wrote: > I believe that it will be best if the kernel publishes an ideal > number_of_free_pages (in /proc/meminfo or whatever). Such number is easy to > work with since this is what applications do, they free pages. Applications > will be able to refer to this number from their garbage collector, or before > allocating memory also if they did not get a notification, and it is also > useful if several applications free memory at the same time. Isn't /proc/sys/vm/min_free_kbytes pretty much just that? Pekka -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org