docs/admin-guide/mm: remove useless markup

It is enough to use a file name to cross-reference another rst document.

Jon says:
  The right things will happen in the HTML output, readers of the
  plain-text will know immediately where to go, and we don't have to add
  the label clutter.

Drop reference markup and unnecessary labels and use plain file names.
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Link: https://lore.kernel.org/r/20230201094156.991542-4-rppt@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/admin-guide/mm/concepts.rst

-.. _mm_concepts:
-
 =================
 Concepts overview
 =================
@@ -86,16 +84,15 @@ memory with the huge pages. The first one is `HugeTLB filesystem`, or
 hugetlbfs. It is a pseudo filesystem that uses RAM as its backing
 store. For the files created in this filesystem the data resides in
 the memory and mapped using huge pages. The hugetlbfs is described at
-:ref:`Documentation/admin-guide/mm/hugetlbpage.rst <hugetlbpage>`.
+Documentation/admin-guide/mm/hugetlbpage.rst.
 
 Another, more recent, mechanism that enables use of the huge pages is
 called `Transparent HugePages`, or THP. Unlike the hugetlbfs that
 requires users and/or system administrators to configure what parts of
 the system memory should and can be mapped by the huge pages, THP
 manages such mappings transparently to the user and hence the
-name. See
-:ref:`Documentation/admin-guide/mm/transhuge.rst <admin_guide_transhuge>`
-for more details about THP.
+name. See Documentation/admin-guide/mm/transhuge.rst for more details
+about THP.
 
 Zones
 =====
@@ -125,8 +122,8 @@ processor. Each bank is referred to as a `node` and for each node Linux
 constructs an independent memory management subsystem. A node has its
 own set of zones, lists of free and used pages and various statistics
 counters. You can find more details about NUMA in
-:ref:`Documentation/mm/numa.rst <numa>` and in
-:ref:`Documentation/admin-guide/mm/numa_memory_policy.rst <numa_memory_policy>`.
+Documentation/mm/numa.rst` and in
+Documentation/admin-guide/mm/numa_memory_policy.rst.
 
 Page cache
 ==========

Documentation/admin-guide/mm/hugetlbpage.rst

-.. _hugetlbpage:
-
 =============
 HugeTLB Pages
 =============
@@ -313,7 +311,7 @@ memory policy mode--bind, preferred, local or interleave--may be used.  The
 resulting effect on persistent huge page allocation is as follows:
 
 #. Regardless of mempolicy mode [see
-   :ref:`Documentation/admin-guide/mm/numa_memory_policy.rst <numa_memory_policy>`],
+   Documentation/admin-guide/mm/numa_memory_policy.rst],
    persistent huge pages will be distributed across the node or nodes
    specified in the mempolicy as if "interleave" had been specified.
    However, if a node in the policy does not contain sufficient contiguous

Documentation/admin-guide/mm/idle_page_tracking.rst

-.. _idle_page_tracking:
-
 ==================
 Idle Page Tracking
 ==================
@@ -70,9 +68,8 @@ If the tool is run initially with the appropriate option, it will mark all the
 queried pages as idle.  Subsequent runs of the tool can then show which pages have
 their idle flag cleared in the interim.
 
-See :ref:`Documentation/admin-guide/mm/pagemap.rst <pagemap>` for more
-information about ``/proc/pid/pagemap``, ``/proc/kpageflags``, and
-``/proc/kpagecgroup``.
+See Documentation/admin-guide/mm/pagemap.rst for more information about
+``/proc/pid/pagemap``, ``/proc/kpageflags``, and ``/proc/kpagecgroup``.
 
 .. _impl_details:
 

Documentation/admin-guide/mm/index.rst

@@ -16,8 +16,7 @@ are described in Documentation/admin-guide/sysctl/vm.rst and in `man 5 proc`_.
 .. _man 5 proc: http://man7.org/linux/man-pages/man5/proc.5.html
 
 Linux memory management has its own jargon and if you are not yet
-familiar with it, consider reading
-:ref:`Documentation/admin-guide/mm/concepts.rst <mm_concepts>`.
+familiar with it, consider reading Documentation/admin-guide/mm/concepts.rst.
 
 Here we document in detail how to interact with various mechanisms in
 the Linux memory management.

Documentation/admin-guide/mm/ksm.rst

-.. _admin_guide_ksm:
-
 =======================
 Kernel Samepage Merging
 =======================

Documentation/admin-guide/mm/memory-hotplug.rst

-.. _admin_guide_memory_hotplug:
-
 ==================
 Memory Hot(Un)Plug
 ==================

Documentation/admin-guide/mm/numa_memory_policy.rst

-.. _numa_memory_policy:
-
 ==================
 NUMA Memory Policy
 ==================

Documentation/admin-guide/mm/numaperf.rst

-.. _numaperf:
-
 =============
 NUMA Locality
 =============

Documentation/admin-guide/mm/pagemap.rst

-.. _pagemap:
-
 =============================
 Examining Process Page Tables
 =============================
@@ -19,10 +17,10 @@ There are four components to pagemap:
     * Bits 0-4   swap type if swapped
     * Bits 5-54  swap offset if swapped
     * Bit  55    pte is soft-dirty (see
-      :ref:`Documentation/admin-guide/mm/soft-dirty.rst <soft_dirty>`)
+      Documentation/admin-guide/mm/soft-dirty.rst)
     * Bit  56    page exclusively mapped (since 4.2)
     * Bit  57    pte is uffd-wp write-protected (since 5.13) (see
-      :ref:`Documentation/admin-guide/mm/userfaultfd.rst <userfaultfd>`)
+      Documentation/admin-guide/mm/userfaultfd.rst)
     * Bits 58-60 zero
     * Bit  61    page is file-page or shared-anon (since 3.5)
     * Bit  62    page swapped
@@ -105,8 +103,7 @@ Short descriptions to the page flags
     A compound page with order N consists of 2^N physically contiguous pages.
     A compound page with order 2 takes the form of "HTTT", where H donates its
     head page and T donates its tail page(s).  The major consumers of compound
-    pages are hugeTLB pages
-    (:ref:`Documentation/admin-guide/mm/hugetlbpage.rst <hugetlbpage>`),
+    pages are hugeTLB pages (Documentation/admin-guide/mm/hugetlbpage.rst),
     the SLUB etc.  memory allocators and various device drivers.
     However in this interface, only huge/giga pages are made visible
     to end users.
@@ -128,7 +125,7 @@ Short descriptions to the page flags
     Zero page for pfn_zero or huge_zero page.
 25 - IDLE
     The page has not been accessed since it was marked idle (see
-    :ref:`Documentation/admin-guide/mm/idle_page_tracking.rst <idle_page_tracking>`).
+    Documentation/admin-guide/mm/idle_page_tracking.rst).
     Note that this flag may be stale in case the page was accessed via
     a PTE. To make sure the flag is up-to-date one has to read
     ``/sys/kernel/mm/page_idle/bitmap`` first.

Documentation/admin-guide/mm/shrinker_debugfs.rst

-.. _shrinker_debugfs:
-
 ==========================
 Shrinker Debugfs Interface
 ==========================

Documentation/admin-guide/mm/soft-dirty.rst

-.. _soft_dirty:
-
 ===============
 Soft-Dirty PTEs
 ===============

Documentation/admin-guide/mm/swap_numa.rst

-.. _swap_numa:
-
 ===========================================
 Automatically bind swap device to numa node
 ===========================================

Documentation/admin-guide/mm/transhuge.rst

-.. _admin_guide_transhuge:
-
 ============================
 Transparent Hugepage Support
 ============================

Documentation/admin-guide/mm/userfaultfd.rst

-.. _userfaultfd:
-
 ===========
 Userfaultfd
 ===========

Documentation/admin-guide/mm/zswap.rst

-.. _zswap:
-
 =====
 zswap
 =====

Documentation/translations/zh_CN/admin-guide/mm/index.rst

@@ -22,7 +22,7 @@ Linux内存管理是一个具有许多可配置设置的复杂系统, 且这些
 .. _man 5 proc: http://man7.org/linux/man-pages/man5/proc.5.html
 
 Linux内存管理有它自己的术语，如果你还不熟悉它，请考虑阅读下面参考：
-:ref:`Documentation/admin-guide/mm/concepts.rst <mm_concepts>`.
+Documentation/admin-guide/mm/concepts.rst.
 
 在此目录下，我们详细描述了如何与Linux内存管理中的各种机制交互。