Merge tag 'mm-stable-2022-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:
 "Most of the MM queue. A few things are still pending.

  Liam's maple tree rework didn't make it. This has resulted in a few
  other minor patch series being held over for next time.

  Multi-gen LRU still isn't merged as we were waiting for mapletree to
  stabilize. The current plan is to merge MGLRU into -mm soon and to
  later reintroduce mapletree, with a view to hopefully getting both
  into 6.1-rc1.

  Summary:

   - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe
     Lin, Yang Shi, Anshuman Khandual and Mike Rapoport

   - Some kmemleak fixes from Patrick Wang and Waiman Long

   - DAMON updates from SeongJae Park

   - memcg debug/visibility work from Roman Gushchin

   - vmalloc speedup from Uladzislau Rezki

   - more folio conversion work from Matthew Wilcox

   - enhancements for coherent device memory mapping from Alex Sierra

   - addition of shared pages tracking and CoW support for fsdax, from
     Shiyang Ruan

   - hugetlb optimizations from Mike Kravetz

   - Mel Gorman has contributed some pagealloc changes to improve
     latency and realtime behaviour.

   - mprotect soft-dirty checking has been improved by Peter Xu

   - Many other singleton patches all over the place"

 [ XFS merge from hell as per Darrick Wong in

   https://lore.kernel.org/all/YshKnxb4VwXycPO8@magnolia/ ]

* tag 'mm-stable-2022-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (282 commits)
  tools/testing/selftests/vm/hmm-tests.c: fix build
  mm: Kconfig: fix typo
  mm: memory-failure: convert to pr_fmt()
  mm: use is_zone_movable_page() helper
  hugetlbfs: fix inaccurate comment in hugetlbfs_statfs()
  hugetlbfs: cleanup some comments in inode.c
  hugetlbfs: remove unneeded header file
  hugetlbfs: remove unneeded hugetlbfs_ops forward declaration
  hugetlbfs: use helper macro SZ_1{K,M}
  mm: cleanup is_highmem()
  mm/hmm: add a test for cross device private faults
  selftests: add soft-dirty into run_vmtests.sh
  selftests: soft-dirty: add test for mprotect
  mm/mprotect: fix soft-dirty check in can_change_pte_writable()
  mm: memcontrol: fix potential oom_lock recursion deadlock
  mm/gup.c: fix formatting in check_and_migrate_movable_page()
  xfs: fail dax mount if reflink is enabled on a partition
  mm/memcontrol.c: remove the redundant updating of stats_flush_threshold
  userfaultfd: don't fail on unrecognized features
  hugetlb_cgroup: fix wrong hugetlb cgroup numa stat
  ...

1 files changed, 68 insertions, 0 deletions

diff --git a/Documentation/mm/index.rst b/Documentation/mm/index.rst
new file mode 100644
index 000000000000..575ccd40e30c
--- /dev/null
+++ b/Documentation/mm/index.rst
@@ -0,0 +1,68 @@
+=====================================
+Linux Memory Management Documentation
+=====================================
+
+Memory Management Guide
+=======================
+
+This is a guide to understanding the memory management subsystem
+of Linux.  If you are looking for advice on simply allocating memory,
+see the :ref:`memory_allocation`.  For controlling and tuning guides,
+see the :doc:`admin guide <../admin-guide/mm/index>`.
+
+.. toctree::
+   :maxdepth: 1
+
+   physical_memory
+   page_tables
+   process_addrs
+   bootmem
+   page_allocation
+   vmalloc
+   slab
+   highmem
+   page_reclaim
+   swap
+   page_cache
+   shmfs
+   oom
+
+Legacy Documentation
+====================
+
+This is a collection of older documents about the Linux memory management
+(MM) subsystem internals with different level of details ranging from
+notes and mailing list responses for elaborating descriptions of data
+structures and algorithms.  It should all be integrated nicely into the
+above structured documentation, or deleted if it has served its purpose.
+
+.. toctree::
+   :maxdepth: 1
+
+   active_mm
+   arch_pgtable_helpers
+   balance
+   damon/index
+   free_page_reporting
+   frontswap
+   hmm
+   hwpoison
+   hugetlbfs_reserv
+   ksm
+   memory-model
+   mmu_notifier
+   numa
+   overcommit-accounting
+   page_migration
+   page_frags
+   page_owner
+   page_table_check
+   remap_file_pages
+   slub
+   split_page_table_lock
+   transhuge
+   unevictable-lru
+   vmalloced-kernel-stacks
+   vmemmap_dedup
+   z3fold
+   zsmalloc