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[174.3.196.123]) by smtp.gmail.com with ESMTPSA id t3sm2392772pga.31.2019.02.11.14.54.48 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 11 Feb 2019 14:54:48 -0800 (PST) Received: from jgg by mlx.ziepe.ca with local (Exim 4.90_1) (envelope-from ) id 1gtKTP-0003RY-Pa; Mon, 11 Feb 2019 15:54:47 -0700 Date: Mon, 11 Feb 2019 15:54:47 -0700 From: Jason Gunthorpe To: Daniel Jordan Cc: akpm@linux-foundation.org, dave@stgolabs.net, jack@suse.cz, cl@linux.com, linux-mm@kvack.org, kvm@vger.kernel.org, kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org, alex.williamson@redhat.com, paulus@ozlabs.org, benh@kernel.crashing.org, mpe@ellerman.id.au, hao.wu@intel.com, atull@kernel.org, mdf@kernel.org, aik@ozlabs.ru Subject: Re: [PATCH 0/5] use pinned_vm instead of locked_vm to account pinned pages Message-ID: <20190211225447.GN24692@ziepe.ca> References: <20190211224437.25267-1-daniel.m.jordan@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190211224437.25267-1-daniel.m.jordan@oracle.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 11, 2019 at 05:44:32PM -0500, Daniel Jordan wrote: > Hi, > > This series converts users that account pinned pages with locked_vm to > account with pinned_vm instead, pinned_vm being the correct counter to > use. It's based on a similar patch I posted recently[0]. > > The patches are based on rdma/for-next to build on Davidlohr Bueso's > recent conversion of pinned_vm to an atomic64_t[1]. Seems to make some > sense for these to be routed the same way, despite lack of rdma content? Oy.. I'd be willing to accumulate a branch with acks to send to Linus *separately* from RDMA to Linus, but this is very abnormal. Better to wait a few weeks for -rc1 and send patches through the subsystem trees. > All five of these places, and probably some of Davidlohr's conversions, > probably want to be collapsed into a common helper in the core mm for > accounting pinned pages. I tried, and there are several details that > likely need discussion, so this can be done as a follow-on. I've wondered the same.. Jason