From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yw0-f198.google.com (mail-yw0-f198.google.com [209.85.161.198]) by kanga.kvack.org (Postfix) with ESMTP id 079016B0253 for ; Thu, 20 Oct 2016 09:28:46 -0400 (EDT) Received: by mail-yw0-f198.google.com with SMTP id y9so35794856ywy.2 for ; Thu, 20 Oct 2016 06:28:46 -0700 (PDT) Received: from mail-qt0-f182.google.com (mail-qt0-f182.google.com. [209.85.216.182]) by mx.google.com with ESMTPS id b47si1351341uaa.154.2016.10.20.06.28.45 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 20 Oct 2016 06:28:45 -0700 (PDT) Received: by mail-qt0-f182.google.com with SMTP id f6so55602944qtd.2 for ; Thu, 20 Oct 2016 06:28:45 -0700 (PDT) Date: Thu, 20 Oct 2016 15:28:43 +0200 From: Michal Hocko Subject: Re: [PATCH] bdi flusher should not be throttled here when it fall into buddy slow path Message-ID: <20161020132842.GM14609@dhcp22.suse.cz> References: <1476774765-21130-1-git-send-email-zhouxianrong@huawei.com> <1476967085-89647-1-git-send-email-zhouxianrong@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1476967085-89647-1-git-send-email-zhouxianrong@huawei.com> Sender: owner-linux-mm@kvack.org List-ID: To: zhouxianrong@huawei.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, viro@zeniv.linux.org.uk, mingo@redhat.com, peterz@infradead.org, hannes@cmpxchg.org, mgorman@techsingularity.net, vbabka@suse.cz, vdavydov.dev@gmail.com, minchan@kernel.org, riel@redhat.com, zhouxiyu@huawei.com, zhangshiming5@huawei.com, won.ho.park@huawei.com, tuxiaobing@huawei.com On Thu 20-10-16 20:38:05, zhouxianrong@huawei.com wrote: > From: z00281421 > > The bdi flusher should be throttled only depends on > own bdi and is decoupled with others. > > separate PGDAT_WRITEBACK into PGDAT_ANON_WRITEBACK and > PGDAT_FILE_WRITEBACK avoid scanning anon lru and it is ok > then throttled on file WRITEBACK. Could you please answer questions from http://lkml.kernel.org/r/20161018114207.GD12092@dhcp22.suse.cz before coming up with new and even more complex patches please? I would really like to understand the issue you are seeing before jumping into patches... Thanks! -- Michal Hocko SUSE Labs -- 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