The patch titled
Subject: docs/vm: update ZONE_DEVICE memory model documentation
has been removed from the -mm tree. Its filename was
mm-document-zone_device-memory-model-implications-fix.patch
This patch was dropped because other changes were merged, which wrecked this patch
------------------------------------------------------
From: Dan Williams <dan.j.williams@xxxxxxxxx>
Subject: docs/vm: update ZONE_DEVICE memory model documentation
Mike notes that Sphinx needs a newline before the start of a bulleted
list, and v10 of the subsection patch set changed the subsection size
from an arch-variable 'PMD_SIZE' to a constant 2MB.
Link: http://lkml.kernel.org/r/156109575458.1409767.1885676287099277666.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Reported-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/vm/memory-model.rst | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/Documentation/vm/memory-model.rst~mm-document-zone_device-memory-model-implications-fix
+++ a/Documentation/vm/memory-model.rst
@@ -205,10 +205,11 @@ subject to its memory ranges being expos
hotplug api on memory block boundaries. The implementation relies on
this lack of user-api constraint to allow sub-section sized memory
ranges to be specified to :c:func:`arch_add_memory`, the top-half of
-memory hotplug. Sub-section support allows for `PMD_SIZE` as the minimum
-alignment granularity for :c:func:`devm_memremap_pages`.
+memory hotplug. Sub-section support allows for 2MB as the cross-arch
+common alignment granularity for :c:func:`devm_memremap_pages`.
The users of `ZONE_DEVICE` are:
+
* pmem: Map platform persistent memory to be used as a direct-I/O target
via DAX mappings.
_
Patches currently in -mm which might be from dan.j.williams@xxxxxxxxx are
