[PATCH v4 10/10] userfaultfd: update documentation to mention shmem minor faults
From: Axel Rasmussen <axelrasmussen@google.com>
Date: 2021-04-20 22:08:45
Also in:
linux-fsdevel, linux-kselftest, linux-mm, lkml
Subsystem:
documentation, memory management - misc, memory management - userfaultfd, the rest · Maintainers:
Jonathan Corbet, Andrew Morton, David Hildenbrand, Mike Rapoport, Linus Torvalds
Generally, the documentation we wrote for hugetlbfs-based minor faults still all applies. The only missing piece is to mention the new feature flag which indicates that the kernel supports this for shmem as well. Signed-off-by: Axel Rasmussen <axelrasmussen@google.com> --- Documentation/admin-guide/mm/userfaultfd.rst | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/Documentation/admin-guide/mm/userfaultfd.rst b/Documentation/admin-guide/mm/userfaultfd.rst
index 3aa38e8b8361..6528036093e1 100644
--- a/Documentation/admin-guide/mm/userfaultfd.rst
+++ b/Documentation/admin-guide/mm/userfaultfd.rst@@ -77,7 +77,8 @@ events, except page fault notifications, may be generated: - ``UFFD_FEATURE_MINOR_HUGETLBFS`` indicates that the kernel supports ``UFFDIO_REGISTER_MODE_MINOR`` registration for hugetlbfs virtual memory - areas. + areas. ``UFFD_FEATURE_MINOR_SHMEM`` is the analogous feature indicating + support for shmem virtual memory areas. The userland application should set the feature flags it intends to use when invoking the ``UFFDIO_API`` ioctl, to request that those features be
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2.31.1.368.gbe11c130af-goog