From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qa0-f51.google.com (mail-qa0-f51.google.com [209.85.216.51]) by kanga.kvack.org (Postfix) with ESMTP id 557AE6B0078 for ; Tue, 20 Jan 2015 10:34:22 -0500 (EST) Received: by mail-qa0-f51.google.com with SMTP id f12so27899222qad.10 for ; Tue, 20 Jan 2015 07:34:22 -0800 (PST) Received: from mail-qa0-x236.google.com (mail-qa0-x236.google.com. [2607:f8b0:400d:c00::236]) by mx.google.com with ESMTPS id e13si597282qaq.33.2015.01.20.07.34.21 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 20 Jan 2015 07:34:21 -0800 (PST) Received: by mail-qa0-f54.google.com with SMTP id w8so27960436qac.13 for ; Tue, 20 Jan 2015 07:34:20 -0800 (PST) Message-ID: <54BE7547.6010701@gmail.com> Date: Tue, 20 Jan 2015 23:33:27 +0800 From: Zhang Yanfei MIME-Version: 1.0 Subject: Re: [PATCH] CMA: treat free cma pages as non-free if not ALLOC_CMA on watermark checking References: <1421569979-2596-1-git-send-email-teawater@gmail.com> <20150119065544.GA18473@blaptop> In-Reply-To: <20150119065544.GA18473@blaptop> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org List-ID: To: Minchan Kim , Hui Zhu Cc: akpm@linux-foundation.org, mgorman@suse.de, hannes@cmpxchg.org, riel@redhat.com, vbabka@suse.cz, iamjoonsoo.kim@lge.com, isimatu.yasuaki@jp.fujitsu.com, wangnan0@huawei.com, davidlohr@hp.com, cl@linux.com, rientjes@google.com, sasha.levin@oracle.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Hui Zhu , Weixing Liu Hello Minchan, How are you? a?? 2015/1/19 14:55, Minchan Kim a??e??: > Hello, > > On Sun, Jan 18, 2015 at 04:32:59PM +0800, Hui Zhu wrote: >> From: Hui Zhu >> >> The original of this patch [1] is part of Joonsoo's CMA patch series. >> I made a patch [2] to fix the issue of this patch. Joonsoo reminded me >> that this issue affect current kernel too. So made a new one for upstream. > > Recently, we found many problems of CMA and Joonsoo tried to add more > hooks into MM like agressive allocation but I suggested adding new zone Just out of curiosity, "new zone"? Something like movable zone? Thanks. > would be more desirable than more hooks in mm fast path in various aspect. > (ie, remove lots of hooks in hot path of MM, don't need reclaim hooks > for special CMA pages, don't need custom fair allocation for CMA). > > Joonsoo is investigating the direction so please wait. > If it turns out we have lots of hurdle to go that way, > this direction(ie, putting more hooks) should be second plan. > > Thanks. > -- 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