• John Hubbard's avatar
    IB/{core,hw,umem}: set FOLL_PIN via pin_user_pages*(), fix up ODP · dfa0a4ff
    John Hubbard authored
    Convert infiniband to use the new pin_user_pages*() calls.
    
    Also, revert earlier changes to Infiniband ODP that had it using
    put_user_page().  ODP is "Case 3" in
    Documentation/core-api/pin_user_pages.rst, which is to say, normal
    get_user_pages() and put_page() is the API to use there.
    
    The new pin_user_pages*() calls replace corresponding get_user_pages*()
    calls, and set the FOLL_PIN flag.  The FOLL_PIN flag requires that the
    caller must return the pages via put_user_page*() calls, but infiniband
    was already doing that as part of an earlier commit.
    
    Link: http://lkml.kernel.org/r/20200107224558.2362728-14-jhubbard@nvidia.comSigned-off-by: default avatarJohn Hubbard <jhubbard@nvidia.com>
    Reviewed-by: default avatarJason Gunthorpe <jgg@mellanox.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: Daniel Vetter <daniel.vetter@ffwll.ch>
    Cc: Dan Williams <dan.j.williams@intel.com>
    Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl>
    Cc: Ira Weiny <ira.weiny@intel.com>
    Cc: Jan Kara <jack@suse.cz>
    Cc: Jason Gunthorpe <jgg@ziepe.ca>
    Cc: Jens Axboe <axboe@kernel.dk>
    Cc: Jerome Glisse <jglisse@redhat.com>
    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: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    dfa0a4ff
user_pages.c 4.56 KB