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Date: Thu, 31 Oct 2019 16:36:28 -0700 From: Ira Weiny <ira.weiny@...el.com> To: John Hubbard <jhubbard@...dia.com> Cc: Andrew Morton <akpm@...ux-foundation.org>, Al Viro <viro@...iv.linux.org.uk>, Alex Williamson <alex.williamson@...hat.com>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Björn Töpel <bjorn.topel@...el.com>, Christoph Hellwig <hch@...radead.org>, Dan Williams <dan.j.williams@...el.com>, Daniel Vetter <daniel@...ll.ch>, Dave Chinner <david@...morbit.com>, David Airlie <airlied@...ux.ie>, "David S . Miller" <davem@...emloft.net>, Jan Kara <jack@...e.cz>, Jason Gunthorpe <jgg@...pe.ca>, Jens Axboe <axboe@...nel.dk>, Jonathan Corbet <corbet@....net>, Jérôme Glisse <jglisse@...hat.com>, Magnus Karlsson <magnus.karlsson@...el.com>, Mauro Carvalho Chehab <mchehab@...nel.org>, Michael Ellerman <mpe@...erman.id.au>, Michal Hocko <mhocko@...e.com>, Mike Kravetz <mike.kravetz@...cle.com>, Paul Mackerras <paulus@...ba.org>, Shuah Khan <shuah@...nel.org>, Vlastimil Babka <vbabka@...e.cz>, bpf@...r.kernel.org, dri-devel@...ts.freedesktop.org, kvm@...r.kernel.org, linux-block@...r.kernel.org, linux-doc@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-kselftest@...r.kernel.org, linux-media@...r.kernel.org, linux-rdma@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, netdev@...r.kernel.org, linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH 09/19] drm/via: set FOLL_PIN via pin_user_pages_fast() On Wed, Oct 30, 2019 at 03:49:20PM -0700, John Hubbard wrote: > Convert drm/via to use the new pin_user_pages_fast() call, which sets > FOLL_PIN. Setting FOLL_PIN is now required for code that requires > tracking of pinned pages, and therefore for any code that calls > put_user_page(). > Reviewed-by: Ira Weiny <ira.weiny@...el.com> > Signed-off-by: John Hubbard <jhubbard@...dia.com> > --- > drivers/gpu/drm/via/via_dmablit.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/via/via_dmablit.c b/drivers/gpu/drm/via/via_dmablit.c > index 3db000aacd26..37c5e572993a 100644 > --- a/drivers/gpu/drm/via/via_dmablit.c > +++ b/drivers/gpu/drm/via/via_dmablit.c > @@ -239,7 +239,7 @@ via_lock_all_dma_pages(drm_via_sg_info_t *vsg, drm_via_dmablit_t *xfer) > vsg->pages = vzalloc(array_size(sizeof(struct page *), vsg->num_pages)); > if (NULL == vsg->pages) > return -ENOMEM; > - ret = get_user_pages_fast((unsigned long)xfer->mem_addr, > + ret = pin_user_pages_fast((unsigned long)xfer->mem_addr, > vsg->num_pages, > vsg->direction == DMA_FROM_DEVICE ? FOLL_WRITE : 0, > vsg->pages); > -- > 2.23.0 >
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