From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx200.postini.com [74.125.245.200]) by kanga.kvack.org (Postfix) with SMTP id 59FD26B007E for ; Tue, 10 Apr 2012 13:20:40 -0400 (EDT) Received: by bkwq16 with SMTP id q16so28758bkw.14 for ; Tue, 10 Apr 2012 10:20:38 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: <1333462221-3987-1-git-send-email-m.szyprowski@samsung.com> From: Sandeep Patil Date: Tue, 10 Apr 2012 10:19:56 -0700 Message-ID: Subject: Re: [PATCHv24 00/16] Contiguous Memory Allocator Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org List-ID: To: Aaro Koskinen Cc: Marek Szyprowski , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linux-mm@kvack.org, linaro-mm-sig@lists.linaro.org, Ohad Ben-Cohen , Daniel Walker , Russell King , Arnd Bergmann , Jonathan Corbet , Mel Gorman , Chunsang Jeong , Michal Nazarewicz , Dave Hansen , Jesse Barker , Kyungmin Park , Benjamin Gaignard , Andrew Morton , Rob Clark , KAMEZAWA Hiroyuki >> >> This is (yet another) update of CMA patches. > > > How well CMA is supposed to work if you have mlocked processes? I've > been testing these patches, and noticed that by creating a small mlocked > process you start to get plenty of test_pages_isolated() failure warnings, > and bigger allocations will always fail. CMIIW, I think mlocked pages are never migrated. The reason is because __isolate_lru_pages() does not isolate Unevictable pages right now. Minchan added support to allow this but the patch was dropped. See the discussion at : https://lkml.org/lkml/2011/8/29/295 Sandeep -- 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