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Date: Wed, 5 Jun 2019 23:18:19 -0700 From: Christoph Hellwig <hch@...radead.org> To: ira.weiny@...el.com Cc: Dan Williams <dan.j.williams@...el.com>, Jan Kara <jack@...e.cz>, Theodore Ts'o <tytso@....edu>, Jeff Layton <jlayton@...nel.org>, Dave Chinner <david@...morbit.com>, Matthew Wilcox <willy@...radead.org>, linux-xfs@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>, John Hubbard <jhubbard@...dia.com>, Jérôme Glisse <jglisse@...hat.com>, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, linux-nvdimm@...ts.01.org, linux-ext4@...r.kernel.org, linux-mm@...ck.org Subject: Re: [PATCH RFC 03/10] mm/gup: Pass flags down to __gup_device_huge* calls On Wed, Jun 05, 2019 at 06:45:36PM -0700, ira.weiny@...el.com wrote: > From: Ira Weiny <ira.weiny@...el.com> > > In order to support checking for a layout lease on a FS DAX inode these > calls need to know if FOLL_LONGTERM was specified. > > Prepare for this with this patch. The GUP fast argument passing is a mess. That is why I've come up with this as part of the (not ready) get_user_pages_fast_bvec implementation: http://git.infradead.org/users/hch/misc.git/commitdiff/c3d019802dbde5a4cc4160e7ec8ccba479b19f97
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