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 Documentation/vm/numa_memory_policy.rst],
+#. Regardless of mempolicy mode [see
+ :ref:`Documentation/vm/numa_memory_policy.rst <numa_memory_policy>`],
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
are not reclaimable, he or she can filter them out using
``/proc/kpageflags``.
-See Documentation/admin-guide/mm/pagemap.rst for more information about
-``/proc/pid/pagemap``, ``/proc/kpageflags``, and ``/proc/kpagecgroup``.
+See :ref:`Documentation/admin-guide/mm/pagemap.rst <pagemap>` for more
+information about ``/proc/pid/pagemap``, ``/proc/kpageflags``, and
+``/proc/kpagecgroup``.
.. _impl_details:
* Bits 0-54 page frame number (PFN) if present
* Bits 0-4 swap type if swapped
* Bits 5-54 swap offset if swapped
- * Bit 55 pte is soft-dirty (see Documentation/admin-guide/mm/soft-dirty.rst)
+ * Bit 55 pte is soft-dirty (see
+ :ref:`Documentation/admin-guide/mm/soft-dirty.rst <soft_dirty>`)
* Bit 56 page exclusively mapped (since 4.2)
* Bits 57-60 zero
* Bit 61 page is file-page or shared-anon (since 3.5)
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 (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.
+ pages are hugeTLB pages
+ (:ref:`Documentation/admin-guide/mm/hugetlbpage.rst <hugetlbpage>`),
+ the SLUB etc. memory allocators and various device drivers.
+ However in this interface, only huge/giga pages are made visible
+ to end users.
16 - COMPOUND_TAIL
A compound page tail (see description above).
17 - HUGE
zero page for pfn_zero or huge_zero page
25 - IDLE
page has not been accessed since it was marked idle (see
- 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.
+ :ref:`Documentation/admin-guide/mm/idle_page_tracking.rst <idle_page_tracking>`).
+ 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.
IO related page flags
---------------------