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authorJohn Hubbard <jhubbard@nvidia.com>2020-01-31 09:13:09 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-01-31 21:30:37 +0300
commita5adf0a08b076f99a06e141d9884994ef8bd17cb (patch)
tree1d219587927db55e1422b1079f8f5802935f4c77 /drivers
parent803e4572d7c5db03cbc155e9dd0530f50ebba336 (diff)
downloadlinux-a5adf0a08b076f99a06e141d9884994ef8bd17cb.tar.xz
drm/via: set FOLL_PIN via pin_user_pages_fast()
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(). In partial anticipation of this work, the drm/via driver was already calling put_user_page() instead of put_page(). Therefore, in order to convert from the get_user_pages()/put_page() model, to the pin_user_pages()/put_user_page() model, the only change required is to change get_user_pages() to pin_user_pages(). Link: http://lkml.kernel.org/r/20200107224558.2362728-16-jhubbard@nvidia.com Signed-off-by: John Hubbard <jhubbard@nvidia.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Jérôme Glisse <jglisse@redhat.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Cc: Alex Williamson <alex.williamson@redhat.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Björn Töpel <bjorn.topel@intel.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl> Cc: Jan Kara <jack@suse.cz> Cc: Jason Gunthorpe <jgg@mellanox.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jens Axboe <axboe@kernel.dk> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kirill A. Shutemov <kirill@shutemov.name> Cc: Leon Romanovsky <leonro@mellanox.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/via/via_dmablit.c2
1 files changed, 1 insertions, 1 deletions
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);