From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: David Laight To: "'john.hubbard@gmail.com'" , Andrew Morton , "linux-mm@kvack.org" CC: Jan Kara , Tom Talpey , Al Viro , Christian Benvenuti , "Christoph Hellwig" , Christopher Lameter , Dan Williams , Dennis Dalessandro , Doug Ledford , "Jason Gunthorpe" , Jerome Glisse , Matthew Wilcox , Michal Hocko , Mike Marciniszyn , Ralph Campbell , LKML , "linux-fsdevel@vger.kernel.org" , John Hubbard Subject: RE: [PATCH 0/2] put_user_page*(): start converting the call sites Date: Tue, 4 Dec 2018 17:10:28 +0000 Message-ID: References: <20181204001720.26138-1-jhubbard@nvidia.com> In-Reply-To: <20181204001720.26138-1-jhubbard@nvidia.com> Content-Language: en-US MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: From: john.hubbard@gmail.com > Sent: 04 December 2018 00:17 >=20 > Summary: I'd like these two patches to go into the next convenient cycle. > I *think* that means 4.21. >=20 > Details >=20 > At the Linux Plumbers Conference, we talked about this approach [1], and > the primary lingering concern was over performance. Tom Talpey helped me > through a much more accurate run of the fio performance test, and now > it's looking like an under 1% performance cost, to add and remove pages > from the LRU (this is only paid when dealing with get_user_pages) [2]. So > we should be fine to start converting call sites. >=20 > This patchset gets the conversion started. Both patches already had a fai= r > amount of review. Shouldn't the commit message contain actual details of the change? =09David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1= PT, UK Registration No: 1397386 (Wales)