The patch titled
Subject: mm: add SECTION_IN_PAGE_FLAGS
has been added to the -mm tree. Its filename is
mm-add-section_in_page_flags.patch
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------------------------------------------------------
From: Cody P Schafer <cody@xxxxxxxxxxxxxxxxxx>
Subject: mm: add SECTION_IN_PAGE_FLAGS
Instead of directly utilizing a combination of config options to determine
this, add a macro to specifically address it.
Signed-off-by: Cody P Schafer <cody@xxxxxxxxxxxxxxxxxx>
Cc: David Hansen <dave@xxxxxxxxxxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Mel Gorman <mel@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff -puN include/linux/mm.h~mm-add-section_in_page_flags include/linux/mm.h
--- a/include/linux/mm.h~mm-add-section_in_page_flags
+++ a/include/linux/mm.h
@@ -625,6 +625,10 @@ static inline enum zone_type page_zonenu
return (page->flags >> ZONES_PGSHIFT) & ZONES_MASK;
}
+#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP)
+#define SECTION_IN_PAGE_FLAGS
+#endif
+
/*
* The identification function is only used by the buddy allocator for
* determining if two pages could be buddies. We are not really
@@ -708,7 +712,7 @@ static inline struct zone *page_zone(con
return &NODE_DATA(page_to_nid(page))->node_zones[page_zonenum(page)];
}
-#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP)
+#ifdef SECTION_IN_PAGE_FLAGS
static inline void set_page_section(struct page *page, unsigned long section)
{
page->flags &= ~(SECTIONS_MASK << SECTIONS_PGSHIFT);
@@ -738,7 +742,7 @@ static inline void set_page_links(struct
{
set_page_zone(page, zone);
set_page_node(page, node);
-#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP)
+#ifdef SECTION_IN_PAGE_FLAGS
set_page_section(page, pfn_to_section_nr(pfn));
#endif
}
_
Patches currently in -mm which might be from cody@xxxxxxxxxxxxxxxxxx are
linux-next.patch
mm-add-section_in_page_flags.patch
mm-add-use-zone_end_pfn-and-zone_spans_pfn.patch
mm-add-zone_is_empty-and-zone_is_initialized.patch
mm-page_alloc-add-a-vm_bug-in-__free_one_page-if-the-zone-is-uninitialized.patch
mmzone-add-pgdat_end_pfnis_empty-helpers-consolidate.patch
mm-page_alloc-add-informative-debugging-message-in-page_outside_zone_boundaries.patch
mm-page_alloc-add-informative-debugging-message-in-page_outside_zone_boundaries-fix.patch
mm-add-helper-ensure_zone_is_initialized.patch
mm-memory_hotplug-use-ensure_zone_is_initialized.patch
mm-memory_hotplug-use-pgdat_end_pfn-instead-of-open-coding-the-same.patch
maintainers-mm-add-additional-include-files-to-listing.patch
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