On Tue, 27 Apr 2021, Axel Rasmussen wrote: > This patch allows shmem-backed VMAs to be registered for minor faults. > Minor faults are appropriately relayed to userspace in the fault path, > for VMAs with the relevant flag. > > This commit doesn't hook up the UFFDIO_CONTINUE ioctl for shmem-backed > minor faults, though, so userspace doesn't yet have a way to resolve > such faults. > > Because of this, we also don't yet advertise this as a supported > feature. That will be done in a separate commit when the feature is > fully implemented. > > Acked-by: Peter Xu <peterx@xxxxxxxxxx> > Signed-off-by: Axel Rasmussen <axelrasmussen@xxxxxxxxxx> Acked-by: Hugh Dickins <hughd@xxxxxxxxxx> > --- > fs/userfaultfd.c | 3 +-- > mm/memory.c | 8 +++++--- > mm/shmem.c | 12 +++++++++++- > 3 files changed, 17 insertions(+), 6 deletions(-)
