The first patch introduces pin_user_pages_fd() API and the second
patch shows how the udmabuf driver can use it to longterm-pin the
the pages. The last patch adds two new udmabuf selftests to verify
data coherency after page migration.
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxxxx>
Cc: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Cc: Dongwon Kim <dongwon.kim@xxxxxxxxx>
Cc: Junxiao Chang <junxiao.chang@xxxxxxxxx>
Vivek Kasireddy (3):
mm/gup: Introduce pin_user_pages_fd() for pinning shmem/hugetlbfs file
pages
udmabuf: Pin the pages using pin_user_pages_fd() API
selftests/dma-buf/udmabuf: Add tests to verify data after page
migration
drivers/dma-buf/udmabuf.c | 82 +++++++---
include/linux/mm.h | 2 +
mm/gup.c | 87 ++++++++++
.../selftests/drivers/dma-buf/udmabuf.c | 151 +++++++++++++++++-
4 files changed, 297 insertions(+), 25 deletions(-)
--
2.39.2
