From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with SMTP id E96386B00EE for ; Wed, 31 Aug 2011 07:19:58 -0400 (EDT) Date: Wed, 31 Aug 2011 13:19:54 +0200 From: Johannes Weiner Subject: Re: [PATCH 2/3] compaction: compact unevictable page Message-ID: <20110831111954.GB17512@redhat.com> References: <8ef02605a7a76b176167d90a285033afa8513326.1321112552.git.minchan.kim@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8ef02605a7a76b176167d90a285033afa8513326.1321112552.git.minchan.kim@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: Minchan Kim Cc: Andrew Morton , linux-mm , LKML , Mel Gorman , Rik van Riel On Sun, Nov 13, 2011 at 01:37:42AM +0900, Minchan Kim wrote: > Now compaction doesn't handle mlocked page as it uses __isolate_lru_page > which doesn't consider unevicatable page. It has been used by just lumpy so > it was pointless that it isolates unevictable page. But the situation is > changed. Compaction could handle unevictable page and it can help getting > big contiguos pages in fragment memory by many pinned page with mlock. This may result in applications unexpectedly faulting and waiting on mlocked pages under migration. I wonder how realtime people feel about that? -- 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