From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f200.google.com (mail-wr0-f200.google.com [209.85.128.200]) by kanga.kvack.org (Postfix) with ESMTP id 291926B0007 for ; Fri, 13 Apr 2018 10:35:49 -0400 (EDT) Received: by mail-wr0-f200.google.com with SMTP id o3so5128739wri.5 for ; Fri, 13 Apr 2018 07:35:49 -0700 (PDT) Received: from gum.cmpxchg.org (gum.cmpxchg.org. [85.214.110.215]) by mx.google.com with ESMTPS id l21si715199eda.383.2018.04.13.07.35.47 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 13 Apr 2018 07:35:47 -0700 (PDT) Date: Fri, 13 Apr 2018 10:37:16 -0400 From: Johannes Weiner Subject: Re: [PATCH 3/3] dcache: account external names as indirectly reclaimable memory Message-ID: <20180413143716.GA5378@cmpxchg.org> References: <20180305133743.12746-1-guro@fb.com> <20180305133743.12746-5-guro@fb.com> <20180413133519.GA213834@rodete-laptop-imager.corp.google.com> <20180413135923.GT17484@dhcp22.suse.cz> <13f1f5b5-f3f8-956c-145a-4641fb996048@suse.cz> <20180413142821.GW17484@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180413142821.GW17484@dhcp22.suse.cz> Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Vlastimil Babka , Minchan Kim , Roman Gushchin , linux-mm@kvack.org, Andrew Morton , Alexander Viro , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@fb.com On Fri, Apr 13, 2018 at 04:28:21PM +0200, Michal Hocko wrote: > On Fri 13-04-18 16:20:00, Vlastimil Babka wrote: > > We would need kmalloc-reclaimable-X variants. It could be worth it, > > especially if we find more similar usages. I suspect they would be more > > useful than the existing dma-kmalloc-X :) > > I am still not sure why __GFP_RECLAIMABLE cannot be made work as > expected and account slab pages as SLAB_RECLAIMABLE Can you outline how this would work without separate caches?