On Fri, Feb 05, 2021 at 05:32:58AM -0500, Paolo Bonzini wrote: > Currently, the follow_pfn function is exported for modules but > follow_pte is not. However, follow_pfn is very easy to misuse, > because it does not provide protections (so most of its callers > assume the page is writable!) and because it returns after having > already unlocked the page table lock. > > Provide instead a simplified version of follow_pte that does > not have the pmdpp and range arguments. The older version > survives as follow_invalidate_pte() for use by fs/dax.c. > > Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx> > --- > arch/s390/pci/pci_mmio.c | 2 +- > fs/dax.c | 5 +++-- > include/linux/mm.h | 6 ++++-- > mm/memory.c | 35 ++++++++++++++++++++++++++++++----- > 4 files changed, 38 insertions(+), 10 deletions(-) Looks good to me, thanks Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Jason
