Merge tag 'docs-5.1' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "A fairly routine cycle for docs - lots of typo fixes, some new
  documents, and more translations. There's also some LICENSES
  adjustments from Thomas"

* tag 'docs-5.1' of git://git.lwn.net/linux: (74 commits)
  docs: Bring some order to filesystem documentation
  Documentation/locking/lockdep: Drop last two chars of sample states
  doc: rcu: Suspicious RCU usage is a warning
  docs: driver-api: iio: fix errors in documentation
  Documentation/process/howto: Update for 4.x -> 5.x versioning
  docs: Explicitly state that the 'Fixes:' tag shouldn't split lines
  doc: security: Add kern-doc for lsm_hooks.h
  doc: sctp: Merge and clean up rst files
  Docs: Correct /proc/stat path
  scripts/spdxcheck.py: fix C++ comment style detection
  doc: fix typos in license-rules.rst
  Documentation: fix admin-guide/README.rst minimum gcc version requirement
  doc: process: complete removal of info about -git patches
  doc: translations: sync translations 'remove info about -git patches'
  perf-security: wrap paragraphs on 72 columns
  perf-security: elaborate on perf_events/Perf privileged users
  perf-security: document collected perf_events/Perf data categories
  perf-security: document perf_events/Perf resource control
  sysfs.txt: add note on available attribute macros
  docs: kernel-doc: typo "if ... if" -> "if ... is"
  ...

3 files changed, 7 insertions, 9 deletions

diff --git a/Documentation/core-api/kernel-api.rst b/Documentation/core-api/kernel-api.rst
index cdd24943fbcc..71f5d2fe39b7 100644
--- a/Documentation/core-api/kernel-api.rst
+++ b/Documentation/core-api/kernel-api.rst
@@ -356,10 +356,6 @@ Read-Copy Update (RCU)
 
 .. kernel-doc:: include/linux/rcupdate.h
 
-.. kernel-doc:: include/linux/rcupdate_wait.h
-
-.. kernel-doc:: include/linux/rcutree.h
-
 .. kernel-doc:: kernel/rcu/tree.c
 
 .. kernel-doc:: kernel/rcu/tree_plugin.h
diff --git a/Documentation/core-api/memory-allocation.rst b/Documentation/core-api/memory-allocation.rst
index 8954a88ff5b7..7744aa3bf2e0 100644
--- a/Documentation/core-api/memory-allocation.rst
+++ b/Documentation/core-api/memory-allocation.rst
@@ -1,4 +1,4 @@
-.. _memory-allocation:
+.. _memory_allocation:
 
 =======================
 Memory Allocation Guide
@@ -113,9 +113,11 @@ see :c:func:`kvmalloc_node` reference documentation. Note that
 
 If you need to allocate many identical objects you can use the slab
 cache allocator. The cache should be set up with
-:c:func:`kmem_cache_create` before it can be used. Afterwards
-:c:func:`kmem_cache_alloc` and its convenience wrappers can allocate
-memory from that cache.
+:c:func:`kmem_cache_create` or :c:func:`kmem_cache_create_usercopy`
+before it can be used. The second function should be used if a part of
+the cache might be copied to the userspace.  After the cache is
+created :c:func:`kmem_cache_alloc` and its convenience wrappers can
+allocate memory from that cache.
 
 When the allocated memory is no longer needed it must be freed. You
 can use :c:func:`kvfree` for the memory allocated with `kmalloc`,
diff --git a/Documentation/core-api/mm-api.rst b/Documentation/core-api/mm-api.rst
index aa8e54b85221..128e8a721c1e 100644
--- a/Documentation/core-api/mm-api.rst
+++ b/Documentation/core-api/mm-api.rst
@@ -35,7 +35,7 @@ users will want to use a plain ``GFP_KERNEL``.
    :doc: Reclaim modifiers
 
 .. kernel-doc:: include/linux/gfp.h
-   :doc: Common combinations
+   :doc: Useful GFP flag combinations
 
 The Slab Cache
 ==============